Australian Boulder Opal
Australian Boulder Opal is a unique and striking variety of opal that is found only in Queensland, Australia. It is distinct from other types of opal due to its natural […]
Entries by CAI ICIA
Mexican Cantera Fire Opal
Mexican Cantera Fire Opal is a vibrant and colorful gemstone that is distinctive due to its unique formation within the host rock, typically rhyolite. The term “Cantera” in Spanish means […]
Hydrophane Opal
Hydrophane opal is a fascinating variety of opal known for its unique ability to absorb water, which can dramatically alter its appearance. Unlike most gemstones, hydrophane opal has a porous […]
Mintabie Opal
Mintabie Opal is a type of opal known for its striking play-of-color and unique beauty. Opal, in general, is a mineraloid composed of hydrated silica, characterized by its iridescent hues […]
Amethyst Sage Agate
Amethyst Sage Agate is a captivating variety of agate that combines the beauty of amethyst with the intricate patterns typical of agate stones. It’s particularly admired for its unique coloration […]
Gray Moonstone
Gray moonstone is a captivating variety of the feldspar mineral group, renowned for its intriguing play of colors and enigmatic appearance. Unlike traditional moonstone varieties, which often exhibit blue adularescence, […]
Pinfire Opal
Pinfire opal is a unique variety of opal characterized by its distinctive pattern of small, pinpoint flashes of color. These pinpoints resemble tiny sparks or stars scattered throughout the gemstone, […]
Sleeping Beauty Turquoise
Sleeping Beauty Turquoise is a stunning gemstone prized for its vivid blue color and smooth texture. This gemstone derives its name from the Sleeping Beauty mine, located in Globe, Arizona, […]
Pink Star Diamond
The Pink Star Diamond is a truly remarkable and exceedingly rare gemstone that has captured the attention of collectors, investors, and enthusiasts around the world. Renowned for its exceptional color […]
Mexican Water Opal
Mexican Water Opal, renowned for its captivating play-of-color and translucent appearance, is a type of opal found exclusively in Mexico. Unlike common opals, Mexican Water Opal exhibits a remarkable clarity […]
Fire Obsidian
Fire obsidian is a captivating natural glass formed when volcanic lava cools rapidly, preventing the crystalline structure from fully developing. This rapid cooling process traps pockets of gas within the […]
Arfvedsonite
Arfvedsonite is a relatively rare mineral that belongs to the amphibole group, a subgroup of silicate minerals. Arfvedsonite is a complex inosilicate mineral with the chemical formula (Na, K)3(Fe, Mn)4Fe2Si8O22(OH)2. […]