Opal
Opals are a unique and mesmerizing gemstone known for their distinctive play of color, making them one of the most sought-after and mysterious gemstones in the world. In this introduction, […]
Entries by CAI ICIA
Malachite
Malachite is a carbonate mineral with chemical composition of Cu2CO3(OH)2. Possibly the earliest ore of copper, malachite is believed to have been mined in the Sinai and eastern deserts of […]
Beryl
Beryl is a mineral composed of beryllium aluminium cyclosilicate, with the chemical formula Be3Al2(Si6O18). It belongs to the cyclosilicate mineral group, which is characterized by its unique arrangement of silicate […]
Celestobarite
Celestobarite is a rare mineral that belongs to the barite group. It is a compound composed of strontium sulfate (SrSO4) and barium sulfate (BaSO4), hence its name, which combines “celestine” […]
Amygdaloidal Agate
Amygdaloidal agate is a specific type of agate that forms within the voids or cavities of volcanic rocks. These voids, often created by gas bubbles in the lava, are called […]
Liddicoatite
Liddicoatite is a fascinating mineral that belongs to the extensive tourmaline group. This gemstone is chemically classified as a calcium-rich lithium aluminum borosilicate. The characteristic that distinguishes liddicoatite from other […]
Pink Rhodochrosite
Pink rhodochrosite is a beautiful gemstone known for its delicate pink hue and unique patterns. It is a manganese carbonate mineral with the chemical formula MnCO3. Rhodochrosite belongs to the […]
Fire Quartz
Fire quartz is a captivating variety of quartz distinguished by its fiery appearance, often due to inclusions of hematite or goethite. These inclusions create a mesmerizing play of light, resembling […]
Ekanite
Ekanite is a silicate mineral with a chemical composition typically expressed as Ca2ThSi8O20Ca2ThSi8O20. It is often found as a tetragonal crystal system but is usually metamict due to the radioactive […]
Chocolate Opal
Chocolate opal is a variety of the common opal, distinguished by its rich, dark brown color that often resembles the hue of chocolate. Like other opals, it is a form […]
Yowah Opal
Yowah Opal is a type of precious opal found specifically in the Yowah opal fields, located in Queensland, Australia. These opals are renowned for their unique patterns and striking color […]
Coober Pedy Opal
Coober Pedy, an intriguing town nestled in the arid outback of South Australia, is renowned worldwide as the “Opal Capital of the World.” Its name, derived from the local Aboriginal […]