Heulandite crystals in a pinkish Natrolite vug from the famed collection of Robert Ferguson (1767-1840). This was obtained by John Marshall in 1998 when the collection was rediscovered and sold-off in lots. This piece, like many others, does not have a label, so some details are lost, but the collection lists pieces from Berufjordur so this given locality is a speculation. However this seems very likely as this matches specimens from here very well, and Heulandite was a new mineral in the years that Ferguson was actively collecting. Crystals reach 1.7 CM and are the typical sharp, glassy partly transparent type well-known from this region of Iceland. Some penetration twins of the prisms are distinctive. No damage.
Incredible color and esthetics from the amazing find of 2010 at M'Ssici (Morocco). Since then only a small find in 2017 produced any specimens those with a very different habit. This cluster of stalactitic growths is encased by small sparkling crystals and rosettes of bright blue Azurite with some small Malachite balls. The matrix is a mix of green Malachite and red Hematite gossan. The Malachite is replacing textbook sharp Azurite crystals and rosettes. Excellent condition, the blue stalactites are standing up to 5.5 CM tall above the green. This locality produced many specimens of Azurite encrusting Quartz crystals but very few pure (hollow) stalactites where there is no inner Quartz crystal. In terms of color intensity, form and condition this is one of the best pieces and is far better in person.
Adamite - gemmy balls
Mina Ojuela, Mapimi
5.3 x 4.3 x 2.5 CM (cabinet)
Lustrous green spherical clusters of Adamite crystals contrasting with a dark gossan matrix. An esthetic yet affordable Adamite, this is also intensely fluorescent. Adamites have been found for decades at Mina Ojuela and are common in the mineral market. Good complete balls are much more rare and the vivid green is especially choice. These balls are translucent to transparent, glassy, apple green and have a "wet-look" luster. A choice piece and better in person.
A rare specimen of Phosgenite from the Gibbas Mine of South Sardinia. This mine was active in 1851-1882 and flooded by 1890. Phosgenite is a rather uncommon Lead Chloride but specimens from this famous old locale are super rare (there are none on Mindat). Several milky white Phosgenite crystals from 1 to 2 CM across are clustered in a vug of altered Galena. This piece comes from the remarkable collection of Ruth and Andy Palmer and later William Hladysz. This was the study collection for Dr. Joe Mandarino's work and held many unusual and rare locality specimens. The Phosgenites are vividly fluorescent and are well-formed with a thin surface alteration. This is the only example from this location I have seen outside of a museum and is a quite a nice Phosgenite.
Spessartine on Smoky Quartz
Tongbei, Yunxiao County, Zhangzhou Prefecture
7.7 x 3.4 x 3.1 CM (cabinet)
Bright orange-red Spessartines on all sides of a single Quartz crystal. A modern classic from Tongbei (China); when first found these were huge mineral news, unlike anything else known before. For a few years ago these were fairly common in the mineral market but as the zone became exhausted there are almost none found now. The prices have also been increasing. This specimen has larger than typical Garnets with the crystals reaching to 7 mm. Excellent condition and esthetics, the color and luster are a bit brighter in person.
4.2 x 3.6 x 2.1 CM (miniature)
Pink Smithsonite in rhombic crystals from Tsumeb. Sharp, gemmy and very lustrous, this is a small miniature (toenail) in fine condition. Tsumeb pink Smithsonites are distinctive, nothing like these are known from anyplace else, and the mine will never again produce these.
Super brilliant luster on these deep blue crystals. A modern classic from Rapid Creek in the Yukon considered by many as the world's best of the specie. These crystals are in a rich cluster, well-developed, very sharp and show good separation. The Quartz crystals are also very sharp and gem clear. A nice contrast. In any good lighting the color is especially bright and rich. In very good condition overall though not perfect, there are some tiny bruises found on close exam (loupe) that are not very noticeable. This does keep the cost much lower and yet looks like a far more expensive piece. The backside is also crystalized but is more Quartz with less Lazulite. A fine display piece.
A multi-color Tourmaline thumbnail with pink to red termination from the Gillette Quarry in Connecticut. In fine shape as seen, the crystal on close exam has quite a number of color shades and a small area of colorless (Achroite) at the bottom. Some tiny side crystals are present though not easy to see by naked eye. The crystal is broken at the very bottom or base where it was removed, however the rest, including termination, are sharp and undamaged under loupe inspection.