| Danburite Faceting Rough
Charcas, San Luis Potosi
I have danburite faceting rough in stock. Prices depend on size, quality and order size. Most of the danburite shows a very weak pink color. Please inquire for further details. There are also a few large piecessimila to the example in the image (sold). It measured 6.7 x 4.5 x 3 cm and has a weight of 117.4 g. The area suitable for cutting comprised about 30% of the piece. A cut stone of at least 30 carat should result.
Prices range between 2 and 8 €/gram |
| CH-28 : Danburite crystal
Charcas, San Luis Potosi
Specimen size: 16x5x3.5 cm
Description: 16 cm long colourless
danburite twin crystal with internal fractures, of gem quality at the crystal tip. The crystals twin plane is parallel to the C-axis, some alteration and fine-grained sugary quartz appear in the centre of the crystal along the twin plane.
Price: 170 EUR |
| CH-29 : Danburite crystal
Charcas, San Luis Potosi
Specimen size: 10x3x2 cm
Description: 10 cm long colourless danburite twin crystal with internal fractures. The crystal tip is of gem quality and shows well developed crystal faces with step-like growth at the pinacoid face. The crystals twin plane is parallel to the C-axis.
Price: 70 EUR |
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| CH-30 : Danburite crystal group
Charcas, San Luis Potosi
Specimen size: 6.5x4.5x2 cm
Description: group of three intergrown doubly terminated danburite crystals, largest is 5.8 cm long.
Price: 65 EUR
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| CS-01: Calcite
Charcas, San Luis Potosi
Specimen size: W.7.5 D.7.0 H.3.0 cm
Description: tabular transparent calcite crystals to a width of 2.5 cm are perched on compactly shaped calcite crystals with tiny inclusions of ore minerals.
A superb calcite specimen without damage.
Price: 50 EUR |
| CS-02: Calcite
Charcas, San Luis Potosi
Specimen size: W.8.0 D.4.0 H.4.5 cm
Description: thin blades of light-green calcite to a width of 5 cm.
Price: 30 EUR
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| CH-32: Pseudomorphed pyrrhotite on danburite
Charcas, San Luis Potosi
Specimen size: W: 5.0, D: 2.0, H: 4.5 cm
Description: A 4.5 cm high hexagonal-shaped pyrrhotite crystal has been replaced completely by pyrite and an unidentified black
mineral (possibly a clay mineral). It is perched on a brown danburite crystal. A very unusual specimen from Charcas.
Price: 50 EUR |
| CH-38: Calcite with Pyrite above
Danburite and Quartz
Charcas, San Luis Potosi
Specimen size: W: 8.0, D: 7.0, H: 5.0 cm
Description: Danburite and Quartz crystals are covered with a mm-thick crust of pyrite, exhibiting a nice iridescence. Yellowish skalenohedral calcite crystals appear as late generation.
Price: 100 EUR |
| C-1: Nifontovite
Charcas, San Luis Potosi
Description : crystal group of the rare boron mineral nifontovite with parallel growth, 1.7 cm high. Two of the smaller crystals have broken tips. Tiny inclusions of lizardite and clinochlore. From the nifontovite find in May/June 2008.
Price: 20 EURO
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| C-2: Nifontovite
Charcas, San Luis Potosi
Description : crystal group of the rare boron mineral nifontovite with parallel growth, 1.5 cm high. No damage. From the
nifontovite find in May/June 2008.
Price: 30 EURO |
| C-3: Nifontovite
Charcas, San Luis Potosi
Description : crystal group of the rare boron
mineral nifontovite with parallel growth, 1.9 cm high. Some crystal tips partly damaged. From the nifontovite find in May/June 2008
. Price: 30 EURO |
 
|
S-1: Nifontovite on matrix
Charcas, San Luis PotosĂ
Specimen size: W: 5, D: 5, H: 4.5 cm
Description : About cm large water-clear nifontovite crystals sitting in a larger matrix vug. Some crystals are undamaged and exhibit nice modified faces at the crystal tip. Matrix is highly porous and consists of heavily included nifontivite needles, cream-coloured mm-large grains of lizardite pseudomorph after (periclase ?), furthermore
microcrystalline clinochlore, andradite, vesuvianite and calcite. Lower image is close-up. Price 40 EURO Sold |
| OC-25: Nifontovite
Charcas, San Luis PotosĂ
Specimen size: W:4.5 cm, D: 2 cm, H:2.8 cm
Description: Nifontovite crystal group: largest crystal: about 3.0 cm long, others are 0.8 to 2 cm in length, most crystals have clear tips and are partly included or covered with white crusts of lizardite, clinochlore and calcite.
Price: 120 EURO |
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OC-32: Nifontovite
Charcas, San Luis Potosi
Description : Perfect, well-terminated, lustrous and absolutely gemmy 2.0 cm long, single nifontovite crystal. At its base inclusions of white clinochlore & lizardite.
Price: 80 EUR |
|
B-1: Nifontovite & matrix
Charcas, San Luis PotosĂ
Specimen size: W:5 cm, D: 4 cm, H:5 cm
The vuggy breccia matrix consists rock fragments and included nifonotovite, lizardite andclinochlore. In cavities are sitting numerous nifontovite crystals, most are clear some are milky-white included. Crystal sizes range between 1 and 3.5 cm, some crystals exhibit parallel growth, some are spear-shaped.
Price: 220 EUR |
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| CS-5: Citrine
Charcas, San Luis Potosi
Specimen size: W: 5, D: 3.5, H: 6 cm
Description: Numberless natural citrine crystals ranging in size from 2 to 5 mm are sitting on a 6 cm high quartz crystal (also on backside). Attached on the backside a 3 cm long incomplete danburite
crystal. A very aesthetic piece, looks much better in person. Price: 125 EUR SOLD |
| CS-6: Citrine
Charcas, San Luis Potosi
Specimen size: W: 3.6, D: 2.7, H: 2 cm
Description: Crystal group of deep yellow natural citrine, partly doubly terminated. A 2 cm long danburite crystal with s quartz crusts is attached. Two crystal tips exhibit faint chipping. Price: 45 EUR |
 
| CS-7: Citrine & danburite
Charcas, San Luis Potosi
Specimen size: W: 11.5, D: 7, H: 3.5 cm
Description: Natural citrine on danburite. A 3 cm long doubly terminated citrine crystal group with parallel growth is perched on a danburite crystal group. Crust of older quartz crystals cover partly the danburite. Citrine is just weakly chipped on the
right crystal tip. Price: 100 EUR |
| CS-8: Datolite & danburite
Charcas, San Luis Potosi
Specimen size: W: 7.5, D: 4.5, H: 4.0 cm
Description:Very nice cluster of lustrous pale-green, blocky datolite crystals. Several, partly broken,
milky to clear danburite crystals are sitting on the datolite.
Price: 75 EUR |
