Andalusite: The gem Andalusite is a gemstone composed of Lead Sulphate giving it a yellowish hew with a light tint of a rusty red color. Its named after the city Andalusia in Spain where it was first found. Colors generally vary from yellow, to yellow green, to green, to brownish red (more iron in the read hued versions), to purple, and even black. This gem is pleochroic meaning it changes color depending on (read full)

Anglesite: Anglesite is a very soft gem just slightly harder than gold and silver and as such it does not hold facets well/cut easily. Because of its softness it tends to scratch, and these scratches will take away from the value and appearance of this gem. Once cut this gem will not do well in rings as it will quickly become scratched and its edges worn round. This gem is usually colorless or clear, but (read full)

Gypsum: Gypsum is the most common sulphate mineral. It is usually the first evaporite mineral to be precipitated form water due to its poor solubility. Varieties include Selenite (or "spectacle stone), which is colorless and transparent; Satin Spar, the fibrous, translucent form with silky luster, which when cut cabochon shows pearly chatoyant effects; Alabaster, used for ornaments, which is firm, fine-gr (read full)