Corundum Corundum is a crystalline form of aluminium oxide typically containing traces of iron, titanium, vanadium and chromium. It is a rock-forming mineral. It is also a naturally transparent material, but can have different colors depending on the presence of...
Citrine Citrine is a transparent, yellow variety of Quartz, ranging in color from pale to golden yellow, honey or almost brown, and may contain rainbow or sparkle inclusions. The name comes from the French word citron, meaning lemon. Citrine is found in the Free...
Agate Agates are characterized by multiple thin laminations of chalcedony that define distinct banding. many agates are found as amygdales in basalts and other volcanic rocks. Agates can be found in a wide spectrum of colours and can be found South Africa, Namibia,...
Calcite Calcite is one of the most common minerals in the world and is found in a variety of crystal forms. Calcite also occurs in massive lumps, granular masses and fibrous habits and forms stalactites and stalagmites. Calcite can be found in almost every colour...
Mimetite Mimetite is a secondary mineral which is found in lead deposits where it forms during the oxidation process of the lead. Deposits have been found in South Africa, Namibia and Zimbabwe. Mimetite is known to be found in yellow, blue, brown and yellow mixed with...