Mineral gemstones are inorganic crystal treasures. Other gemstones are organic remains of a past life and include gemstones such as amber and jet. Inorganic gems are crystalline, while organic gems are without crystalline form.
Crystalline structure is in part responsible for properties such as hardness, cleavage, fracture, specific gravity, and external shape. The specific properties attributed to minerals and gems can be influenced by both crystal structure and composition.
All of the over 4,000 known minerals, each falls into only one of six different crystal systems.
When different crystal structures result from arranging the same elements or chemical composition differently, then they are referred to as polymorphs (i.e., many forms, one composition). In contrast, when many different chemical compositions can arrange themselves in a like-symmetry, this is referred to as isomorphism (i.e., one form, many compositions).
Polymorphism means many forms or shapes. It is when minerals have the same chemical composition but different crystal structures resulting in different minerals. Diamond and graphite are both composed of carbon but obviously different minerals with vastly different physical and optical properties. Graphite is the soft pencil lead and used as a lubricant, while diamond is a hard gemstone and used as an abrasive for cutting in its industrial applications.
Isomorphism means one or the same form or shape. Isomorphic minerals have the same geometric structural arrangement, but with different atoms or ions in the sites that results in different minerals. These have the same structural configuration but a wide diversity in chemical composition.
There are several natural gemstone groups that offer isomorphous formations. Among them are the topaz family, the tourmaline family and the garnet family.
These accepted and naturally occurring Isomorphic types of gemstones were the inspiration for creating the Isomorphic diamond. A type of diamond which is created by man that has the crystal structure of a natural diamond but a modified chemical composition.
The diamond crystal structure gives the Isomorphic diamond it’s sparkle and the modified composition makes the Isomorphic diamonds both perfect in colour and flawless.