Hematoid Milky Quartz | Rostowrack China Clay Pit, Cornwall | No. 1

A beautiful 160g Cornish hematoid milky quartz specimen featuring delicate blush-pink crystalline formations, translucent milky quartz and subtle reddish iron-rich mineral staining. Supplied as originating from Rostowrack China Clay Pit at Hendra Downs, near St Dennis, Cornwall.

This attractive natural specimen combines soft pastel colouring, sparkling quartz crystal surfaces and a distinctive layered matrix, offering an interesting example of the quartz mineralisation associated with Cornwall's historic china clay district.

Specimen Description

This charming specimen displays an irregular, compact formation with a densely crystallised upper surface and a contrasting pale, massive quartz base.

The most distinctive feature is its soft blush-pink and champagne colouring, visible throughout the smaller quartz crystals. These delicate tones contrast beautifully with the creamy white and translucent mineral surfaces.

Numerous small quartz crystals form interlocking clusters across the exposed upper section, creating a naturally sparkling appearance. Their varied sizes and orientations produce subtle changes in reflection when the specimen is viewed from different angles.

One particularly attractive feature is a larger, translucent milky quartz crystal projecting from the surrounding smaller crystalline growth. Its rounded appearance and reflective surfaces create an interesting contrast with the finer crystal formations.

The specimen also exhibits a thin reddish-brown mineralised line extending through sections of its pale matrix. This iron-rich colouring is characteristic of the appearance commonly described as hematoid quartz.

Along the sides and reverse, the pale cream and white matrix displays subtle layering, irregular mineral textures and small areas of crystalline growth.

Soft peach, pale pink, milky white and champagne tones combine to give this specimen a delicate appearance, while its natural fractures and contrasting textures provide additional geological interest.

At 160g, this piece makes an attractive display specimen for collectors of Cornish minerals, British quartz and naturally coloured crystal formations.

About the Minerals

Quartz (SiO₂) is a silicon dioxide mineral belonging to the trigonal crystal system, with a Mohs hardness of 7.

Quartz is one of the most widespread minerals in the Earth's crust and commonly forms when silica-bearing fluids circulate through fractures, veins and cavities within rocks.

As geological conditions change, dissolved silica may crystallise, producing a variety of formations ranging from massive quartz to well-developed individual crystals and delicate crystalline coatings.

Milky Quartz is a variety of quartz characterised by its cloudy white or translucent appearance. Its characteristic milkiness is commonly caused by numerous microscopic fluid inclusions that scatter light within the crystal.

In this specimen, milky quartz forms the pale underlying material and several larger translucent crystalline areas.

Hematoid Quartz is a descriptive trade name applied to quartz displaying reddish, orange, brown or pinkish colouring associated with iron-bearing mineral inclusions or staining.

Hematite (Fe₂O₃), an iron oxide mineral, is one possible source of this colouring. Other iron oxides and oxyhydroxides may produce similar appearances.

The delicate pinkish tones and reddish mineralised line visible in this specimen are consistent with iron-associated colouring, although the precise mineral responsible has not been independently established.

These contrasting quartz textures and iron-rich colour variations make the specimen particularly interesting from both a geological and aesthetic perspective.

Rostowrack China Clay Pit & Cornish Heritage

Rostowrack China Clay Pit is located at Hendra Downs, near St Dennis, within Cornwall's historically important St Austell granite district.

The St Austell district is internationally recognised for its extensive china clay deposits, which developed through the alteration of feldspar-bearing granite.

China clay, also known as kaolin, became one of Cornwall's most important industrial mineral resources, supplying the ceramics, paper and other manufacturing industries.

Unlike Cornwall's better-known tin and copper mines, the china clay industry focused primarily on extracting kaolin from altered granite.

However, the geological processes affecting the granite also produced a variety of mineralised veins, fractures and associated mineral occurrences.

Rostowrack is particularly interesting because geological investigations have documented quartz mineralisation within its altered granite.

A field excursion published in the Proceedings of the Ussher Society in 1995 examined Rostowrack China Stone Quarry and China Clay Pit.

The published account describes kaolinised granite and records a prominent quartz vein trending northwest to southeast within the altered granite.

Further geological documentation produced for EUROGRANITES 2014 describes a large, multistage quartz-hematite vein at Rostowrack, together with other features associated with granite alteration and mineralisation.

This documented association of quartz and hematite provides relevant geological context for specimens displaying iron-rich quartz mineralisation from the locality.

Mineralogical records also document quartz, hematite, fluorite, kaolinite, cassiterite and other minerals at Rostowrack.

The surrounding St Austell district has a long industrial history associated with china clay extraction, china stone production and the development of Cornwall's mineral industries.

Historical records and museum collections help preserve the story of these workings and their contribution to Cornwall's geological and industrial heritage.

Specimens attributed to Rostowrack therefore offer an interesting connection between Cornwall's granite geology, historic mineral extraction and natural crystal formation.

Although quartz and hematite mineralisation are documented at the locality, the exact mineral responsible for the pink and reddish colouring of this individual specimen has not been independently laboratory verified.

Intention & Associated Chakras

In traditional crystal healing practices, milky quartz and hematoid quartz are associated with complementary symbolic qualities:

• Milky Quartz: Calm, clarity, emotional balance and gentle reflection.
• Hematoid Quartz: Grounding, focus, confidence and emotional stability.
• Quartz: Clarity, amplification of intention and spiritual awareness.

Associated Chakras: Root Chakra and Crown Chakra.

Intention: Calm, Protection and Spiritual Growth.

These associations belong to crystal healing traditions and are not scientifically established properties of the minerals.

Natural Formation & Symbolism

As a naturally formed raw mineral specimen, this piece retains its irregular structure, exposed crystalline surfaces and contrasting mineral textures.

The delicate pink quartz crystals and pale milky matrix provide an attractive example of the variation that can occur during natural mineral formation.

The reddish iron-rich line running through the specimen offers a visible reminder of the mineral-bearing fluids and geological processes that can influence the appearance of quartz.

Raw mineral formations are traditionally associated with authenticity, connection to the natural world and appreciation of the Earth's geological history.

The combination of soft pink tones and translucent quartz can also be interpreted symbolically as a balance between gentleness and strength.

Specimen Details

• Mineral: Hematoid Milky Quartz
• Primary Mineral: Quartz (SiO₂)
• Colouring: Pinkish and reddish iron-associated staining
• Mine: Rostowrack China Clay Pit (supplied locality attribution)
• Locality: Hendra Downs, St Dennis, Cornwall, England
• Weight: 160g
• Measurements: 38.3mm × 66.9mm
• Crystal System: Trigonal
• Mohs Hardness: 7
• Formation: Natural raw quartz specimen with crystalline growth and iron-rich colouring
• Colour: Blush pink, champagne, peach, milky white and cream
• Finish: Natural, unpolished
• Condition: Natural irregular edges, crystalline surfaces, mineral staining and visible fractures
• Quantity: One individual specimen

You will receive the exact specimen photographed. Natural mineral specimens may contain fractures, uneven surfaces, delicate crystals, inclusions and variations resulting from their geological formation.

Display stand and decorative accessories shown in the photographs are not included.

Sources & References

The following resources provide geological, mineralogical and historical background relevant to the Rostowrack locality and its surrounding granite district:

1. Mindat – Rostowrack China Clay Pit, Cornwall. Mineral locality database providing information on recorded mineral occurrences, including quartz and hematite.
2. Bristow & Howe (1995) – Field Excursion to the Fal Valley, St Austell Granite. Geological field excursion account describing Rostowrack China Stone Quarry and China Clay Pit, including a quartz vein within kaolinised granite.
3. EUROGRANITES 2014 – Granites and Mineralisation of South West England. Geological field guide describing the Rostowrack granite, kaolinisation and multistage quartz-hematite mineralisation.
4. Wheal Martyn Trust – China Stone. Museum resource discussing china stone and its historical significance within Cornwall's china clay industry.

Geological and historical references relate to the recorded Rostowrack locality and do not independently establish the provenance of this individual specimen. Its locality is carried forward from the supplied collection information and should be confirmed before publication. The term hematoid quartz describes its iron-associated colouring; the precise iron-bearing mineral has not been independently laboratory identified.