Farzana Diamond Bridal Jewelry 22

 Farzana Diamond Bridal Jewelry 

By Farzana Aamir/

Farzana Diamond Jewelry.

 your how jewelry diamond choice do. Farzana Diamond Jewelry in the beautiful jewelry for women choice is diamond jewelry it 18k white gold and diamond in bridal and party jewelry  you jewelry great honor for us. 

5-2..DOUBLE REFRACTION AND DISPERSION

As would appear in a singly refractive stone such as diamond, each edge appears as a double line (see figure 3.1). a word of warning, however, should be uttered here; according to their crystal structure, all doubly refracting stones have either one or two direction in which only single refraction obtains. those gemstones belonging to the tetragonal, trigonal or hexagonal system of crystals have only such direction; one 'optic axis' as it called. these minerals, which are grouped together optically us 'uniaxal', 

include zircon, corundum (ruby and sapphire), beryl (emerald and aquamarine), tourmaline, and quartz (amethyst and citrine). the minerals crystallising in either the orthorhombic, monoclinic or triclinic systems have two optic axes, and are called 'biaxial'. these include peridot, chrysoberal (alexandrite), topaz, and spodumene (kunzite) among the coommoner gemstones.