Alexandrite of Brésilia aproximatively 14 carats with another one half smaller of same crystal !!! at Alexandrite discussion forums | Alexandrite guide
A general name for any small visible foreign matter such as gas, liquid, glass, or mineral enclosed within a gemstone or rock, which is a growth phenomena. Fracture or cleavage in a gemstone are not classed as inclusions. The nature of inclusions are used
An isometric mineral, representing a naturally occurring crystalline form of pure carbon polymorphous with graphite, chaoite, and lonsdaleite and being the hardest substance known. Found in volcanic neck, volcanic pipe, and alluvial deposits. Cut into var
A unit employed in weighing diamonds, pearls, and other gemstones, which formerly ranged from 185.5 to 205.3 milligrams. Now the International metric carat is equal to 0.2 gram, or 200 milligrams and this is the standard in a majority of countries. Abbrev
Thai/U.S. joint venture established to manufacture high quality diamond tools at affordable prices for gemstone and glass cutting industries throughout the world.
Diamond Tech standard diamond discs feature high concentrations of specially micronized q