Morganite is a beautiful pink-to-peach gemstone variety of the mineral beryl. Known for its delicate pastel colors and...

Alexandrite is one of the rarest and most valuable gemstones in the world. It is famous for its remarkable ability to...

Tanzanite is one of the world's rarest and most valuable gemstones. Known for its striking blue-violet color,...

Augite is one of the most common minerals in the pyroxene group and an important rock-forming mineral in igneous and...

Hornblende is the most common member of the amphibole mineral group and one of the most important rock-forming...

Biotite is a common dark-colored mica mineral found in a wide variety of igneous and metamorphic rocks. It is easily...