Blue John Mineral Specimens
Blue John is a unique form of Fluorite from the Derbyshire area, particularly the area around Castleton.
£100.00 – £250.00
Buy 5 or more: 5% off ● Buy 10 or more: 10% off ● Buy 20 or more: 20% off
Blue John Mineral Specimens
Blue John is a unique form of Fluorite from the Derbyshire area, particularly the area around Castleton.
It is an extremely rare form of Fluorite and is only getting rarer - a very small amount comes to the market every year.
It is usually purple, sometimes purple and yellow - and often exhibits good cubic crystals.
Our current stock includes:
- #1 - 155x90x34.5MM - a 646 gram specimen with one fully polished face and a smaller polished face to the rear. Nice purple banding amid larger areas of whites, greys, and cream tones. Some areas are fluorescent.
- #2 - 30.2x18.4x13.8MM - a yellowy-orange piece with a single band of purple.
- #3 - 23.6x16.3x15.2MM - quite a lot of purple and 'clear' sections in here, with some iron staining.
- #4 - 27.4x13.1x9.3MM - nice one with lots of purple, some iron staining.
- #5 - 25x12.7x8.4MM - primarily a clear piece with a single purple band.
- #6 - 245x128x65MM - a very large piece weighing 2.75KG. The matrix rock is fossiliferous, and the top face is covered in a large number of purple Fluorite crystals. It has a largely flat base and will make an excellent cabinet piece.
- #7 - 21.3x19.9x9.1MM - primarily a clear piece with a single purple band.
- #8 - 15x13x8.5MM - quite a nice piece, plenty of clear/white and purple areas.
- #9 - 25x22x12.6MM - a clear/white and purple piece with lots of iron staining.
- #10 - 18x13.6x7.6MM - a very dark purple piece, which is best viewed with a backlight.
- Several low quality small specimens sold as random picks. Very good budget option for collectors who want their first piece of Blue John.
Additional information
| Weight | 0.1 kg |
|---|---|
| Dimensions | 4 × 4 × 3 cm |
| Specimen | 10-20MM random pick, low grade, boxed, 1pc, #1 – 155x90x34.5MM – 646g, #2 – 30.2×18.4×13.8MM, #3 – 23.6×16.3×15.2MM, #4 – 27.4×13.1×9.3MM, #5 – 25×12.7×8.4MM, #6 – 245x128x65MM – 2750g, #7 – 21.3×19.9×9.1MM, #8 – 15x13x8.5MM, #9 – 25x22x12.6MM, #10 – 18×13.6×7.6MM |
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