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2341 specimens listed
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HOLD Dioptase
stock #HOLD 21.1-191
Sanda Hills, Mindouli, Mindouli District
Pool Department, Republic of Congo (Brazzaville)
2.6 x 1.2 x .6 CM (thumbnail)
price: $360
Late Summer 2021

A killer thumbnail of gemmy Dioptase in elongated crystals. In perfect condition and with excellent form, this is from the recent finds in the Sanda Hills of the Republic of Congo. The Dioptase is all translucent and the termination areas are also transparent. The whole piece has a glassy-bright luster. It is hard to fully appreciate or see the rich emerald color of these crystals on a computer but the color in person is rich and saturated.

Cobaltoan Calcite
stock #21.1-188
Agoudal Mine, Bou Azzer
Draa-Tafilalet Region, Morocco
4.2 x 3.8 x 2.8 CM (miniature)
price: $390
Late Summer 2021

Intense color and well formed crystals of Cobaltoan Calcite with a strong visual impact. From the mines at Agoudal (Bou Azzer, Morocco) which have produced some of the best of these, and many other important Cobalt minerals. Crystals on this reach 1.4 CM but most are smaller. Cobaltoan Calcites at Bou Azzer is found in zones every few years, most is more pale than this specimen.

Chrome Tremolite - gem crystal
stock #21.1-181
Merelani Hills, Lelatama Mountains, Simanjiro District
Manyara Region, Tanzania
5.7 x 1.5 x .6 CM (cabinet)
price: $790
Late Summer 2021

A large, choice and gemmy Chrome Diopside crystal. This comes from the best locality for this uncommon variety of Tremolite, the Merelani Hills famed for its Tanzanite. Very little has been available for the past few years and usually much smaller. This is a very large crystal for the specie, the color is slightly zoned from a bright apple green at the base to a more yellow-green below the termination. The termination is somewhat crude but complete with several separate points and some dark inclusions. The crystal is well-striated giving a silky look to the sides of the prism. This is fully transparent so it does not need any backlight to show off the color.

Topaz on Rhyolite
stock #21.1-336
Topaz Mountain, Thomas Range, Juab County
Utah, United States
6.4 x 5.6 x 5.7 CM (cabinet)
price: $490
Late Summer 2021

A perfect, gem clear sherry colored Topaz crystal perched on a hard Rhyolite matrix. This classic locality is famed for Topaz and this is an especially choice piece with unusual perfection and no fading to the rich color. Even under 20x magnification this is undamaged. This does not have dark inclusions or interior cleaving lines inside as most do, it is eye-clean gem. This zone continues to produce a few nice pieces each year to dedicated diggers but the quality of this piece is far beyond most found. Most crystals of this size or larger are far less clear or even opaque.

Malachite replacing Azurite with Dolomite etc.
stock #21.1-329
Touissit, Touissit-Bou Beker Dist., Jerada Province
Oriental Region, Morocco
4.6 x 2.8 x 2.3 CM (miniature)
price: $650
Late Summer 2021

A super well-composed specimen with two main Azurite crystals one partly and one fully replaced by Malachite. Touissit is famed for its great Azurites the Malachite replacements are not as often seen. This piece with the largest crystal 3.1 CM tall dominating the matrix looks fine from all sides. No damage and very good contrast to the matrix. The largest crystal has an unaltered termination of lustrous blue Azurite, while the larger prism faces are a velvety chatoyant green Malachite. A few sharp Dolomite crystals also add contrast. At a high magnification a little Brochantite is seen along with some primary Malachite crystals, so this is certainly a complex miniature. The last operations closed in 2002 here, but the most important shafts which were the best specimen sources closed earlier. In a short period, this locality gained worldwide fame as one of the best sources of exceptional Lead and Copper minerals. These are prized today.

Witherite
stock #21.1-323
Minerva Mine #1, Rosiclare Level, Cave in Rock
Illinois, United States
3.2 x 2.9 x 1.8 CM (thumbnail)
price: $300
Late Summer 2021

Textbook perfect form and top quality Witherite crystal on matrix from the Minerva Mine. It is not often we see a super Witherite in thumbnail size, this is in perfect condition, no damage and looks fine from any angle. The form of this piece looks much like a classic English Witherite but it is from Illinois where this is a quite rare habit. There were just two important localities for fine Witherites worldwide, Cumbria in the UK and the Minerva Mine in the USA. Both locales are now classics and neither produces anything today. This piece is also intensely fluorescent.

Cerussite - V twins with cat's-eye
stock #21.1-325
Touissit, Touissit-Bou Beker Dist., Jerada Province
Oriental Region, Morocco
3.2 x 2.5 1.7 CM (thumbnail)
price: $650
Late Summer 2021

A sharp and lustrous pair of "V" twins are conjoined along one edge. A super large thumbnail from the great mines at Touissit. The crystals are gemmy, transparent, and have the silky chatoyant "cat's-eye" inclusions that are so distinctive for these from Touissit. This is the quality needed to make the rare faceted or cabbed cats-eye gems, but the fine condition of the crystals would make that a real shame to cut. The color ranges from cognac to almost colorless depending on the light angle striking the crystals. Overall in fine condition from most every angle, this is incredible for such a delicate and fragile mineral. Close inspection shows ultra tiny edge roughness and small contacts but as seen the the condition is very clean. This specimen dates to the "golden age" of Touissit mining in the late 1970's era. This incredible locality is closed forever and no more of these will be found.

Copper - spinel twin crystals
stock #21.1-318
Dzhezkazgan Mining District
Karaganda Region, Kazakhstan
7.5 x 1 x .6 CM (cabinet)
price: $390
Late Summer 2021

Elongated spinel twin crystals of copper in a chain form are topped with a tiny "tree" of copper wire crystals. Super esthetic and in perfect condition from the amazing find about 12 years ago in Kazakhstan, this is a textbook perfect example. The Copper has a dark red patina on one side and a more metallic on the other. The red color may be the result of Cuprite coatings and alterations on those faces. An elegant and delicate form, this is very impressive in person and the little tree really makes this remarkable.