Geographic Minerals

Definition – Tiger’s-Eye (also called “tiger eye”) is a very popular gemstone that displays a chatoyancy (cat’s-eye) when a polished stone is moved back and…

Definition – Labradorite ((Ca, Na)(Al, Si)4O8), is a feldspar mineral of the plagioclase series that is most often found in mafic igneous rocks such as…

About K2 Granite– “K2 Granite,” also known as “K2 Jasper” and “raindrop azurite,” is the foundation of the earth, but at the same time, it…

Definition – Agate /ˈæɡət/ belongs to the quartz family, which makes it a popular crystal for healing, especially due to its composition of silicon dioxide,…

Definition – Cordierite (mineralogy) or iolite (gemology) is a silicate mineral that is found in metamorphic and igneous rocks. It is typically blue to violet…

Definition – Sunstone is an abundance stone which is a member of the Feldspar family. These mineral inclusions usually have a common orientation, and light…

Definition – Chrysocolla Chalcedony or “gem silica chrysocolla” is a hydrated copper phyllosilicate mineral with formula: Cu2−xAlx(H2−xSi2O5)(OH)4·nH2O (x<1) or (Cu,Al)2H2Si2O5(OH)4·nH2O. It is often known as…

Definition – Sugilite (/ˈsuːɡɪlaɪt/ SOO-gi-lyt) is a rare mineral and a gemstone best known for its vibrant pink to purple colors. High-quality specimens are sought…

Definition – Geodes (derived from the Greek word “γεώδης” meaning “Earth-like”) are spherical to subspherical rock structures with an internal cavity lined with mineral materials.…

Definition – Prasiolite (also known as green quartz, green amethyst or vermarine) is a yellow-green to green variety of quartz that is cut into faceted…

Definition – Rhodonite is a manganese inosilicate, (Mn, Fe, Mg, Ca)SiO3 and member of the pyroxenoid group of minerals, it is well known among collectors…

Definition – Andesine is a silicate mineral, and it was named after its original occurrence in the Andes Mountains of South America. By definition, Andesine…