International Minerals #18

Jet-black goethite from this classic locality in Slovakia. The specimen is well developed all around, the goethite shows mirror-like luster. The piece looks great in various positions and should be high ranked for the rare origin.

Dark, cold green-blueish crystals of willemite in an attractive combination with sparkling tiny cerrusite crystals set in a vug on red-brown matrix. Willemite developed sharp terminated and lustrous crystals. More 3-dimensional and better in person. No significant damages to report.

Several dozen purple fluorite cubes scattered on a nicely contrasting quartz matrix! No significant damage, the back side is crystalized also.

The main crystal in the center is up to 16mm on edges. Fluorite shows intense yellow colour and very nice contrast with matrix. The matrix is covered with tiny quartz crystals, which show red-brown color, caused by hematite inclusions. The shape is very 3-dimensional and very eye-catching.

The gwindel shows a significant rotation and a very elongated, elegant habit. Clarity and luster are better in person. Great shape and condition all around!

The two main crystals are 10mm across. All crystals are sharp terminated and very glossy. The contrast to white adularia and quartz matrix is really striking! No damage.

A large and sparkling sample of Romanian gold! Backside doesn´t look less attractive, no matrix is involved - 3cm pure Gold in best color and quality.

This is a complete crystal – not contacted or extracted backside. The single Fluorite crystal is 47 x 34 x 33mm tall. It consists of uncountable tiny steps, which are all sharp terminated. Uncountable faces, all lustrous. The crystal is attractively set on a jet-black and glossy thin Sphalerite crystal. There are no damages or contacts along the edges of the crystal, these are all micro steps or modifications. The crystal shows very fine clarity – much better in person. Only caused by these many steps you cannot see the clarity on my photo well. The crystal is not completely colorless, there is just a touch of lavender when you hold it in front of neutral background. The assemble is really exciting in person. The Sphalerite is just 8mm thick and the Fluorite is exactly in the middle – not only the middle from left to right, also from front to back. No significant damages to report, much better in person, highly recommended.

A well formed cluster of this rare mineral from famous Herja mine. The locality is among the most relevant localities for this mineral world-wide. So this specimen represents a rarity in remarkable crystals size and outstanding quality. Semseyite developed sharp crystals in the typical dark steel-grey color with only a touch of dark yellow. No significant damages to report.

A well formed cluster of sharp terminated, lustrous crystals. They show a very nice contrast of colorless white and red (caused by hematite inclusions) zoning. Typically for Tsumeb, but in really fine quality. The center doesn´t show any significant damage.

Superb rubellite from a classic Brazilian source. Striking X-shape, great colour and luster all around!