I received six rocks in my purchase order all as expected, and I will use mineral box again

Jet-black cassiterite crystals nested in straw-coloured muscovite rosettes from Xuebaoding, Sichuan — the classic contrast of the locality, here with the black cluster set into a hollow at the centre. 6.6 × 4.1 × 3.8 cm, 165 g.
| Mineral | Cassiterite |
|---|---|
| Locality | Xuebaoding, Pingwu, China |
| Crystal system | Tetragonal |
| Chemical formula | SnO2 |
| Dimensions | 6.6 cm × 4.1 cm × 3.8 cm |
| Weight | 165 g |
| Color | Black |
| Size | Small Cabinet (2–4 inches / 5–10 cm) |
| Species | Scheelite |
| Condition | No damage on display faces |
Jet-black cassiterite crystals occupy a nest of straw-coloured mica, their faces bright enough to throw the light back like polished anthracite. The muscovite fans out around them in overlapping books and rosettes, champagne through pale tan, closing over the black cluster as though the mica had grown up around it.
Xuebaoding in Sichuan is the locality behind cassiterite of this kind: tin-rich fluids moved through altered granite and dropped SnO2 into cavities already lined with mica. Cassiterite is heavy for its size, specific gravity near 7, and hard at Mohs 6–7, so the crystals themselves are robust — but muscovite splits into sheets under pressure, and the mica is what suffers if the piece is handled roughly.
Overall 6.6 × 4.1 × 3.8 cm, 165 g, supplied without a stand. The images record this specimen exactly as it will be packed.
Cassiterite is an oxide mineral prized by collectors for its exceptional color range, with several world-class Chinese localities.
Yes. Every specimen is a single, one-of-a-kind piece, and the photographs show the exact item you will receive — never a stock photo.
Yes — specimens like this form naturally. As is standard in the trade, some pieces are gently cleaned or trimmed; we photograph the actual specimen and describe its origin and condition conservatively.
Orders ship worldwide with fully insured, tracked delivery, carefully packed to protect fragile crystals. A display base is included.
Yes — there is a 14-day return window.
I received six rocks in my purchase order all as expected, and I will use mineral box again

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