Blue sapphire and tourmaline are strongly dichroic uniaxial gems, while tanzanite (again, see figure 1) provides an example of a strongly trichroic biaxial stone. Not all uniaxial gems display visible ...
Gemstone Investments Ltd., incorporated in the year 1994, is a Small Cap company (having a market cap of Rs 22.05 Crore) operating in Financial Services sector. Gemstone Investments Ltd. key ...
Our cutting-edge research lays a strong scientific foundation to set the standard for diamond and gemstone reports. It also allows GIA to develop innovative instruments and educate future gemologists ...