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21 specimens found
1 | 2 | 3 |

Fluorite - etched cube with
stock #18.1-540
Penas Blancas, Bourbur
Boyaca, Colombia
3.4 x 2.3 x 1.6 CM (small miniature/ large thumbnail (toenail))
price: $420
Dec 2018

A perfectly etched cubic Fluorite with the unique emerald green corners of Penas Blancas. This rare zoning has now been attributed to the same Chromium that colored the world class Emeralds found just a few hundred meters lower on this mountain. This is transparent and mostly colorless like an ice cube with complex crystallized. etched surfaces on all sides. There is no damage or chipping A very fine example that is choice, complete and shows the selective color in the corners perfectly.
Quartz -Yellow Humboldtine inclusions
stock #18.1-629
Cabiche, Municipio de Quipama
Boyaca, Colombia
7.3 x 6.5 x 5.5 CM (cabinet)
price: $950
Dec 2018

An incredible new find of Quartz with bright yellow tips that are now known to be inclusions of Humboldtine. We obtain this specimen and a few others in Colombia just over two years ago but the analysis was not validated until recently. This specimen is a radiating group of Quartz crystals on a small shard of matrix, and is in fine condition. The find has made big news in the mineral world and now seems to be fully exhausted, there were very few matrix specimens and most of these were very quickly sold. This specimen has misplaced and not put in our show display, it is one of the few left and we think maybe the only one on the web. Choice and obviously a very rare Quartz.
Albite with Fluorapatite
stock #18.1-447
La Marina Mine, Pauna
Boyaca, Colombia
7.2 x 4.8 x 3.3 CM (cabinet)
price: $80
Late Summer 2018

Albite in sharp, glassy, lustrous and mostly transparent are the majority of the specimen. There are a few scattered pink Apatites, the largest about 1 CM, which are also glassy, transparent and in fine condition. From the great find at La Marina Mine, that became famed for the pink Apatites and later for some of the worlds best Euclase. The Albites were sometimes matrix for both of these species and I think under appreciated on their own, they are superb and showy Feldspars. A choice specimen that is well crystalized on both sides and shows off the Albite more than the Apatite.
Quartz -optically clear
stock #18.1-425
Penas Blancas, Bourbur
Boyaca, Colombia
4.3 x 2.2 x 1.5 CM (miniature)
price: $80
Late Summer 2018

The clarity and perfection of the top pieces of Penas Blancas (Colombia) Quartz are just amazing. This is a textbook perfect, clean and very lustrous crystal. Hard to fully appreciate in photos, the crystal acts a prism and the striations will diffract light unlike other Quartz. We source at the mine and select a very small percentage of single prisms, offering only the most perfect of each find. The recent finds at Penas represent a great value for price to quality that is rare in the mineral world.
Quartz- ultra clear
stock #18.1-364
Penas Blancas, Bourbur
Boyaca, Colombia
5.3 x 2.1 x 1.5 CM (small cabinet/ large miniature)
price: $180
Late Summer 2018

From the incredible finds at Penas Blancas come some of the worlds clearest Quartz. Remarkable optical-grade clarity, fine condition and with a few edge modifications;(extra faces). The striations are very distinct and add a prismatic effect from some angles. We have had been to visit these prospects and mines, selected top specimens and are pleased to offer these fantastic prisms. Much more transparent in person.
Beryl var. Emerald
stock #8.1-389
Muzo Mining District
Boyaca, Colombia
2.3 x 1.8 x 1.4 CM (thumbnail)
price: $1950
Late Summer 2018

A single fat gem crystal with excellent color, very sharp edges, lustrous faces and fine display impact. 8.9 Grams a few inclusions but with good transparency, this was mined in 2007. A small area of attached shale on the backside/bottom is the only matrix, this is all Beryl. It has gotten very uncommon to find such good single gem crystals in Colombia. Newer methods of treatment, filling and enhancement means these can be consumed by gem cutters for much more expensive jewelry. In excellent condition and better in person.
Parisite - single crystal
stock #15.1-197
Muzo Mining District
Boyaca, Colombia
2.4 x 1.6 x 1.2 CM (thumbnail)
price: $950


Large, sharp, and very translucent, this single crystal of Parisite is exceptional. The bright red brown color and glassy luster make this stand out. Parisites have been found sporadically at the Emerald mines near Muzo, but usually much smaller, damaged or opaque. This is a textbook example of the tapering habit seen at Muzo. Perfectly eye clean for damage but very tiny chip can be found with 20X magnification. In 15 years of travel and worki with Colombian minerals, this is the best single crystal of Parisite we have had.
Beryl V. Emerald on Calcite
stock #8.1-223
La Marina Mine, Pauna
Boyaca, Colombia
3.3 x 2.1 x 1.5 CM (small miniature/ large thumbnail (toenail))
price: $450
Worldwide mix summer

Fine, deep color Emerald crystal nicely perched on crystalized Calcite. From the La Marina Mine, which is famed for Apatites and Euclase but only rarely are specimen Emeralds seen from here. No repairs, the hexagon of Beryl has some etched faces and one one edge a contact but otherwise it is a very choice little gem crystal on classic Colombian matrix. It has gotten very hard to source Emerald specimens in Colombia that are not color enhanced, repaired or priced at crazy levels. This is a very reasonable and attractive peice.
21 specimens found
1 | 2 | 3 |