Testing Hardness , Toughness and Stability of Gemstones

How Gemstones durability is analysed?  Durability of gemstones helps in gems identification of particular gemstones through its particular characteristics or resistance power in particular environment in its internal structure or externally.  There are many experiments done on mineral stones and their results tell us about how much stone is hard or tough. There are normally following […]

Identification of Gems – Calcite dichroscope

Observing Gemstone colours through Calcite Dichroscope. A dichroscope is a handheld tool for identifying or looking into the different colors or shades of a pleochroic piece of gemstones. It helps any gemologist or gem cutter in judging gemstone before cutting or identifying any gem.   Calcite Dichroscope Calcite Dichroscope is used to observe dichroic gems and […]

What is Luster Called in Gemstones?

Luster is referred to the light reflected from the surface of gems. In some gemstones, there is internal light reflections also such as facet stones with transparency. However internal reflection of light is not called luster. It is called brilliance. Luster is the way a mineral either shines or does not shine. Gems and minerals can […]