{"product_id":"milky-quartz-crystal-cluster-rostowrack-china-clay-pit-cornwall-no-1","title":"Milky Quartz Crystal Cluster | Rostowrack China Clay Pit, Cornwall |  No. 1","description":"\u003cp\u003eA beautiful 245g Cornish milky quartz specimen displaying delicate translucent crystals, soft champagne and blush tones, and an intricate natural crystalline structure, originating from Rostowrack China Clay Pit at Hendra Downs, near St Dennis, Cornwall.\u003c\/p\u003e\n\n\u003cp\u003eThis distinctive specimen combines the gentle appearance of pale quartz with the geological heritage of Cornwall's historic china clay industry. Its unusual sweeping formation, densely crystallised surfaces and subtle colour variations make it a lovely addition to any British mineral collection.\u003c\/p\u003e\n\n\u003ch3\u003eSpecimen Description\u003c\/h3\u003e\n\n\u003cp\u003eThis attractive specimen features a striking, naturally irregular formation of milky quartz, with an elongated, rising profile that gives the piece an almost sculptural appearance.\u003c\/p\u003e\n\n\u003cp\u003eIts surface is covered with numerous intergrown quartz crystals, ranging from small sparkling points to larger translucent crystal faces. These create a beautiful interplay of light and texture, particularly across the more open crystalline sections.\u003c\/p\u003e\n\n\u003cp\u003eThe colour palette is predominantly soft milky white, with delicate champagne, pale peach and blush-pink undertones. Certain areas display greater transparency, allowing light to penetrate the crystals and reveal their internal structure.\u003c\/p\u003e\n\n\u003cp\u003eOne of the specimen's most appealing features is its gently curving profile. The formation rises towards one end before sweeping downwards into a broader crystalline base, creating an attractive natural silhouette when displayed upright.\u003c\/p\u003e\n\n\u003cp\u003eAcross the specimen, tightly packed quartz growth transitions into more clearly defined crystal faces, producing subtle variations in lustre and transparency. The reverse and sides reveal further crystalline development, giving the piece visual interest from several angles.\u003c\/p\u003e\n\n\u003cp\u003eThe combination of delicate colouring, natural crystalline texture and distinctive formation makes this an appealing display specimen for collectors of Cornish quartz and British mineral heritage.\u003c\/p\u003e\n\n\u003ch3\u003eAbout the Mineral\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eQuartz (SiO₂)\u003c\/strong\u003e is a naturally occurring silicon dioxide mineral belonging to the trigonal crystal system, with a Mohs hardness of 7.\u003c\/p\u003e\n\n\u003cp\u003eQuartz is one of the most widespread minerals in the Earth's crust and commonly forms when silica-bearing fluids deposit mineral material within fractures, veins and cavities.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMilky quartz\u003c\/strong\u003e is a descriptive variety of quartz characterised by its cloudy white or translucent appearance. This effect commonly results from numerous microscopic fluid inclusions or other internal imperfections that scatter light as it passes through the crystal.\u003c\/p\u003e\n\n\u003cp\u003eDepending on the concentration and distribution of these inclusions, milky quartz may range from nearly opaque white to softly translucent crystal formations.\u003c\/p\u003e\n\n\u003cp\u003eIn this specimen, areas of milky white quartz are interspersed with clearer, lightly tinted crystal growth. The delicate peach and champagne colouring may reflect trace impurities, inclusions or surface staining, although the precise cause has not been analytically determined.\u003c\/p\u003e\n\n\u003cp\u003eQuartz is a documented mineral occurrence at Rostowrack China Clay Pit, where the mineralogical record also includes other varieties of quartz, cassiterite, fluorite, hematite and kaolinite.\u003c\/p\u003e\n\n\u003ch3\u003eQuarry History \u0026amp; Cornish Heritage\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eRostowrack China Clay Pit\u003c\/strong\u003e is situated at Hendra Downs, near St Dennis, within Cornwall's historically important St Austell granite district.\u003c\/p\u003e\n\n\u003cp\u003eUnlike Cornwall's better-known tin and copper mines, Rostowrack forms part of the county's extensive china clay heritage, an industry associated with the extraction and processing of kaolin-bearing granite.\u003c\/p\u003e\n\n\u003cp\u003eChina clay, also known as kaolin, develops through the alteration of feldspar-rich rocks. In Cornwall, the alteration of granite produced substantial deposits of kaolinite-bearing material, which became an important industrial resource.\u003c\/p\u003e\n\n\u003cp\u003eThe St Austell district developed into one of Britain's most significant china clay producing regions. The material became especially valuable in ceramics, including porcelain manufacture, and subsequently found widespread use in paper and other industrial products.\u003c\/p\u003e\n\n\u003cp\u003eThe wider Hendra Downs area contains several historically recorded china clay and china stone workings, including Rostowrack and neighbouring Parkandillick.\u003c\/p\u003e\n\n\u003cp\u003eRostowrack is specifically documented as a china clay pit in mineral locality records. Its geological associations reflect the complex mineralisation and alteration processes affecting the St Austell granite.\u003c\/p\u003e\n\n\u003cp\u003eAlthough china clay was the principal industrial material associated with these workings, mineral collectors have also documented other minerals from the locality.\u003c\/p\u003e\n\n\u003cp\u003eQuartz specimens from Rostowrack appear in recorded mineral collections, including examples of smoky and amethystine quartz. Cassiterite, including the distinctive banded variety historically known as wood tin, is another documented occurrence.\u003c\/p\u003e\n\n\u003cp\u003eThe Wheal Martyn Trust also records a specimen of china stone from Rostowrack, providing a direct connection between the locality and Cornwall's wider ceramic raw-material heritage.\u003c\/p\u003e\n\n\u003cp\u003eThese mineral occurrences demonstrate how Cornwall's china clay workings could reveal geological features beyond the materials being commercially extracted.\u003c\/p\u003e\n\n\u003cp\u003eThis specimen therefore represents both the natural beauty of Cornish quartz and the industrial heritage of the St Austell granite district.\u003c\/p\u003e\n\n\u003ch3\u003eIntention \u0026amp; Associated Chakras\u003c\/h3\u003e\n\n\u003cp\u003eIn traditional crystal healing practices, milky quartz is associated with clarity, emotional balance and gentle personal growth.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eClarity:\u003c\/strong\u003e Traditionally associated with clear thinking, perspective and mental focus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalm:\u003c\/strong\u003e Symbolically connected with emotional balance, patience and peaceful reflection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpiritual Growth:\u003c\/strong\u003e Often used as a symbolic focus for self-awareness, reflection and personal development.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmplification:\u003c\/strong\u003e Quartz is traditionally believed to support and amplify personal intentions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eAssociated Chakras:\u003c\/strong\u003e Crown Chakra and Third Eye Chakra.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIntention:\u003c\/strong\u003e Calm, Clarity and Spiritual Growth.\u003c\/p\u003e\n\n\u003cp\u003eThese associations belong to crystal healing traditions and are not scientifically established properties of quartz.\u003c\/p\u003e\n\n\u003ch3\u003eNatural Formation \u0026amp; Symbolism\u003c\/h3\u003e\n\n\u003cp\u003eAs a naturally formed raw mineral specimen, this piece retains its original irregular shape, exposed crystalline surfaces and distinctive geological textures.\u003c\/p\u003e\n\n\u003cp\u003eIts gently sweeping formation and softly translucent crystal growth give it an elegant appearance without the need for cutting or polishing.\u003c\/p\u003e\n\n\u003cp\u003eWithin traditional crystal symbolism, raw quartz is associated with authenticity, clarity and a connection to the natural world.\u003c\/p\u003e\n\n\u003cp\u003eThe contrast between its delicate translucent crystals and more substantial milky quartz base provides a beautiful symbolic representation of strength, growth and clarity emerging through natural processes.\u003c\/p\u003e\n\n\u003ch3\u003eSpecimen Details\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMineral:\u003c\/strong\u003e Milky Quartz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemical Formula:\u003c\/strong\u003e SiO₂\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLocality:\u003c\/strong\u003e Rostowrack China Clay Pit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArea:\u003c\/strong\u003e Hendra Downs, St Dennis\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCounty:\u003c\/strong\u003e Cornwall, England\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 245g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasurements:\u003c\/strong\u003e 64.7mm × 89.3mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrystal System:\u003c\/strong\u003e Trigonal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMohs Hardness:\u003c\/strong\u003e 7\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormation:\u003c\/strong\u003e Natural raw quartz crystal cluster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColour:\u003c\/strong\u003e Milky white, translucent champagne, pale peach and subtle blush tones\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Natural, unpolished\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e Natural crystalline surfaces, irregular edges and variations in crystal development\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e One individual specimen\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eYou will receive the exact specimen photographed. Natural mineral specimens may contain fractures, uneven surfaces, delicate crystal points, inclusions and variations resulting from their geological formation.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eSources \u0026amp; References\u003c\/h3\u003e\n\n\u003cp\u003eThe following resources document the mineral occurrences, geology and china clay heritage associated with Rostowrack and the wider St Austell district:\u003c\/p\u003e\n\n\u003col\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.mindat.org\/gl\/1198\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eMindat – Rostowrack China Clay Pit\u003c\/a\u003e. Mineral locality record and photographic documentation of quartz and other minerals from Rostowrack, Hendra Downs, St Dennis.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.mindat.org\/loc-18527.html\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eMindat – St Dennis Mineral Localities\u003c\/a\u003e. Regional mineral records documenting quartz, cassiterite, kaolinite and other minerals associated with Rostowrack and surrounding workings.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.wheal-martyn.com\/china-stone\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eWheal Martyn Trust – China Stone, Rostowrack China Clay Pit\u003c\/a\u003e. Museum resource documenting china stone from Rostowrack and explaining its significance in Cornish porcelain manufacture.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.mindat.org\/maps.php?id=1198\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eMindat – Rostowrack Locality Maps\u003c\/a\u003e. Geographical record identifying the pit within the Hendra Downs area of Cornwall.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003e\u003csmall\u003eHistorical and geological references relate to the recorded quarry locality and wider regional geology. The provenance of this individual specimen is based on its supplied collection information. Mineral identification has not been independently laboratory verified. No specific extraction date or individual collecting history has been established.\u003c\/small\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eRostowrack China Clay Pit\u003c\/strong\u003e is situated at Hendra Downs, near St Dennis, within Cornwall's important St Austell granite and china clay district.\u003c\/p\u003e\n\n\u003cp\u003eThe St Austell granite forms part of the Cornubian granite batholith, a series of granite intrusions associated with the complex geological processes that produced Cornwall's celebrated mineral deposits.\u003c\/p\u003e\n\n\u003cp\u003eFollowing the emplacement of the granite, circulating hydrothermal fluids altered portions of the original rock. One particularly important process was kaolinisation, during which feldspar minerals were altered to form kaolinite, the principal clay mineral associated with china clay deposits.\u003c\/p\u003e\n\n\u003cp\u003eThese altered granite deposits became the foundation of Cornwall's china clay industry, which developed into an internationally important source of ceramic and industrial raw materials.\u003c\/p\u003e\n\n\u003cp\u003eRostowrack formed part of the wider Hendra Downs china clay landscape, alongside other documented workings including Parkandillick China Clay Pit and Great Wheal Prosper China Stone Quarry.\u003c\/p\u003e\n\n\u003cp\u003eAlthough china clay was the principal industrial commodity, the area's geological formations also contain a variety of other minerals associated with granite alteration, mineralised veins and natural cavities.\u003c\/p\u003e\n\n\u003cp\u003eRostowrack is recorded as a locality for quartz, kaolinite, cassiterite, fluorite, hematite, opal and schorl, among other minerals.\u003c\/p\u003e\n\n\u003cp\u003eThe locality is also associated with examples of wood tin, a distinctive variety of cassiterite displaying fibrous, banded or concentric growth structures.\u003c\/p\u003e\n\n\u003cp\u003eResearch published in 1987 by K.F.G. Hosking, G.J. Stanley and G.S. Camm documented the occurrence, nature and genesis of wood tin in south-west England, including material associated with Rostowrack.\u003c\/p\u003e\n\n\u003cp\u003eQuartz specimens from the pit have also been documented in mineral collections, including examples of smoky quartz, pale amethystine quartz and crystalline quartz associated with other granite-related minerals.\u003c\/p\u003e\n\n\u003cp\u003eThese occurrences demonstrate that Cornwall's china clay workings are significant not only for their industrial importance but also for the mineral specimens revealed through quarrying.\u003c\/p\u003e\n\n\u003cp\u003eRostowrack provides an interesting connection between Cornwall's granite geology, historic mineral collecting and the development of the china clay industry.\u003c\/p\u003e\n\n\u003cp\u003eSpecimens attributed to this locality represent another fascinating aspect of Cornwall's rich mineralogical heritage, beyond the tin and copper mines for which the county is internationally renowned.\u003c\/p\u003e\n\n\u003ch3\u003eIntention \u0026amp; Associated Chakras\u003c\/h3\u003e\n\n\u003cp\u003eIn traditional crystal healing practices, smoky quartz and milky quartz are associated with complementary symbolic qualities:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmoky Quartz:\u003c\/strong\u003e Grounding, protection, emotional stability and releasing negativity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMilky Quartz:\u003c\/strong\u003e Calm, clarity, patience and gentle emotional balance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eAssociated Chakras:\u003c\/strong\u003e Root Chakra and Crown Chakra.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIntention:\u003c\/strong\u003e Protection, Calm and Spiritual Growth.\u003c\/p\u003e\n\n\u003cp\u003eThese associations belong to crystal healing traditions and are not scientifically established properties of quartz.\u003c\/p\u003e\n\n\u003ch3\u003eNatural Formation \u0026amp; Symbolism\u003c\/h3\u003e\n\n\u003cp\u003eAs a naturally formed raw mineral specimen, this piece retains its irregular shape, exposed crystalline surfaces and distinctive cavity structure.\u003c\/p\u003e\n\n\u003cp\u003eThe contrasting smoky and milky quartz formations illustrate the diversity of appearances that can develop within a single mineral species under different geological conditions.\u003c\/p\u003e\n\n\u003cp\u003eIts recessed crystal cavity provides a beautiful example of mineral growth within a natural opening, where successive deposition of silica-bearing material allowed crystals to develop into available space.\u003c\/p\u003e\n\n\u003cp\u003eRaw quartz formations are traditionally associated with authenticity, clarity and connection to the natural world.\u003c\/p\u003e\n\n\u003cp\u003eThe contrast between the pale outer matrix and deeper smoky crystal interior also offers a symbolic representation of finding clarity, stability and beauty beneath the surface.\u003c\/p\u003e\n\n\u003ch3\u003eSpecimen Details\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinerals:\u003c\/strong\u003e Smoky Quartz \u0026amp; Milky Quartz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuarry:\u003c\/strong\u003e Rostowrack China Clay Pit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLocality:\u003c\/strong\u003e Hendra Downs, St Dennis, Cornwall, England\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 280g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasurements:\u003c\/strong\u003e 72.5mm × 72.2mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormation:\u003c\/strong\u003e Natural raw quartz specimen with crystal-lined cavity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrystal System:\u003c\/strong\u003e Trigonal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMohs Hardness:\u003c\/strong\u003e 7\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColour:\u003c\/strong\u003e Smoky grey, champagne, translucent beige, milky white and cream\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLustre:\u003c\/strong\u003e Vitreous (glassy)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e Natural mineral surfaces, irregular edges, internal veils and exposed crystalline formations\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e One individual specimen\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrice:\u003c\/strong\u003e £49.00\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eYou will receive the exact specimen photographed. Natural mineral specimens may contain fractures, uneven surfaces, delicate crystals, internal inclusions and variations resulting from their geological formation.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCare:\u003c\/strong\u003e Handle carefully to protect the exposed quartz crystal points. Avoid abrasive cleaning, sudden temperature changes and prolonged exposure to strong direct sunlight.\u003c\/p\u003e\n\n\u003ch3\u003eSources \u0026amp; References\u003c\/h3\u003e\n\n\u003cp\u003eThe following resources document the mineral occurrences, geological setting and mineralogical heritage of Rostowrack China Clay Pit and the surrounding St Dennis area:\u003c\/p\u003e\n\n\u003col\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.mindat.org\/loc-1198.html\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eMindat – Rostowrack China Clay Pit, Hendra Downs, St Dennis, Cornwall\u003c\/a\u003e. Mineral locality database documenting quartz, kaolinite, cassiterite and other recorded minerals from the pit.\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.mindat.org\/gl\/1198\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eMindat – Rostowrack China Clay Pit Specimen Gallery\u003c\/a\u003e. Photographic mineral collection records, including smoky quartz, quartz crystal aggregates and other specimens attributed to the locality.\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.mindat.org\/loc-222167.html\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eMindat – Hendra Downs, St Dennis, Cornwall\u003c\/a\u003e. Regional mineral locality record documenting Rostowrack and neighbouring china clay and china stone workings.\u003c\/li\u003e\n\n\u003cli\u003eHosking, K.F.G., Stanley, G.J. \u0026amp; Camm, G.S. (1987). The occurrence, nature and genesis of wood tin in south-west England. \u003cem\u003eTransactions of the Royal Geological Society of Cornwall\u003c\/em\u003e, Volume XXI, Part 4, pp. 169–172. Historical mineralogical research cited in the Rostowrack locality records.\u003c\/li\u003e\n\n\u003cli\u003eBristow, C.M. \u0026amp; Howe, J.H. (1995). Field excursion to the Fal Valley, in the western part of the St Austell granite, 4 January 1995. \u003cem\u003eProceedings of the Ussher Society\u003c\/em\u003e, Volume 8, p. 454. Geological field reference associated with kaolinite at Rostowrack.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003e\u003csmall\u003eGeological and historical references relate to the documented quarry and surrounding mineral district. The provenance of this individual specimen is based on its supplied collection information. The mineral identification has not been independently laboratory verified. Historical research references are included as documented in mineral locality records and have not all been independently checked against their complete original publications.\u003c\/small\u003e\u003c\/p\u003e\n","brand":"Harpo's Angels","offers":[{"title":"Default Title","offer_id":59261836362063,"sku":null,"price":43.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1028\/1238\/5615\/files\/download_f217acf7-9134-417c-ad7a-3fd0ab21cfb9.png?v=1792949491","url":"https:\/\/harposangels.co.uk\/products\/milky-quartz-crystal-cluster-rostowrack-china-clay-pit-cornwall-no-1","provider":"Harpo's Angels","version":"1.0","type":"link"}