Aquamarine is a blue variety of Beryl mineral with chemical composition This belongs to the mineral beryl belongs to the Silicates mineral class. Aquamarine is known member of the Beryl family. This Aquamarine is commonly used as gemstone. It usually appears in blue-green color in transmitted light of polarized light microscope. This Aquamarine is only […]

Specific gravity is synonymous with density. It is defined as the relationship between the weight of an equal volume of water and the weight of the substance. To determine by calculation, it is equal to the weight of the mineral from the air divided by its loss of weight in water. Several methods are used […]

Crystal is defined to be a definite geometrical form or outline as a result of bounding regularly arranged natural plane surfaces to a mineral or to a prepared chemical substance. Almost all gem minerals are outlined into well-formed crystals. Upon understanding the crystallographic properties of certain minerals, efficient cutting of gems is possible and of […]

A mineral maybe defined as a naturally occurring inorganic homogeneous solid with a characteristics chemical composition, and usually possessing atomic structures, which can be express into crystalline formation or other physical properties visible under polarizing petrographic microscopes. The composition of a mineral is nearly constant so that assignation of chemical formula is specific. These minerals […]

Every mineral formed is characterized by a chemical composition. Each may be classified as either a chemical compound or simply as an element. A chemical compound is formed when two or more elements are found present in a chemical combination. There are also some elements that commonly occur uncombined. These are the elements: carbon, gold, […]