
Agate
Crystal EncyclopediaAgate is a fascinating and versatile mineral that has captivated human interest for thousands of years. Agate is a variety of chalcedony, a mineral of the quartz family. It is distinguished by its fineness of grain and brightness of color. Agates are…

Rutilated Quartz
Crystal EncyclopediaRutilated quartz is a type of quartz crystal that contains needle-like inclusions of the mineral rutile (titanium dioxide). These fine, golden, or reddish-brown needle-like threads of rutile can be distributed throughout the quartz crystal in various…

Tiger’s Eye
Crystal EncyclopediaTiger’s Eye is a mineral gemstone that belongs to the quartz family. It is composed primarily of silicon dioxide (SiO2), the same chemical composition as other varieties of quartz such as amethyst and citrine.
What sets Tiger’s Eye apart is its unique…

Bismuth
minerals
Bismuth is a fascinating metal known for its unique properties and striking visual appeal. Among its various forms, synthetic bismuth crystals stand out due to their vibrant, rainbow-like colors. These colorful crystals are created by cooling molten…

Amber Overview
Crystal Encyclopedia
Amber is a fascinating organic gemstone that has captured human fascination for millennia. It’s not a mineral, but rather a fossilized resin from ancient trees. This unique material has played a significant role in various cultures and has been used…

Onyx
minerals
Onyx is a type of chalcedony, which is a microcrystalline form of quartz. It is a banded variety of chalcedony that forms in concentric layers of different colors. Onyx typically has a black base with white or colored bands. The colored bands can range…

Andalusite
Crystal EncyclopediaAndalusite is a mineral that holds significant importance due to its unique crystal structure, distinctive physical properties, and its utilization in various industrial applications. It belongs to the aluminosilicate mineral group and is characterized…

Diopside
Crystal Encyclopedia
Aliabad, Hunza Valley, Gilgit District, Gilgit-Baltistan (Northern Areas), Pakistan
Diopside is a member of pyroxene group mineral with formula is MgCaSi2O6. Specimens can be colorless but are more often bottle green, brownish green, or…

Sapphire
Crystal Encyclopedia, Gem Encyclopedia
Sapphire is a precious gemstone that is a variety of the mineral corundum, which is composed of aluminum oxide. It is typically blue in color, but can also be found in other hues such as yellow, pink, purple, green, and colorless. The blue color of sapphire…

Spinel
Crystal Encyclopedia
Spinel is a mineral that belongs to the group of oxides and forms in various colors, making it a popular gemstone. Its chemical composition is magnesium aluminum oxide (MgAl2O4). Spinel crystals have an octahedral crystal structure and are often found…

Kyanite
Crystal EncyclopediaKyanite is a mineral composed of aluminum silicate, and it belongs to the family of aluminosilicate minerals. Its chemical formula is Al2SiO5. Kyanite typically forms bladed crystals, and its name is derived from the Greek word “kuanos,” meaning blue,…

Rutile
Crystal EncyclopediaRutile is a mineral composed primarily of titanium dioxide (TiO2). It is one of the three main minerals of titanium, along with ilmenite and leucoxene. Rutile is commonly found in igneous rocks, metamorphic rocks, and certain types of sedimentary rocks.…