Major gemstones produced in the country include rhodolite, ruby, sapphire, green garnet, tourmaline, aquamarine, emerald, diamond, topaz and amethyst, ...

... like sea blue gemstones, natural CZ(zircon), tanzanite, spinelle c. low grade gemstones, like garnet, topaz, olivine,kallaite, lapis lazuli.

... crystal, tourmaline, garnet, sapphire, amethyst, tanzanite with varied sizes and shapes like faceted beads, fancy shapes, uncut chips, tube, oval, ...

... 14 K Checkerboard Cut Green Amethyst Ring; 14K Diamond Cluster Ring; 14 K Natural Zircon & Diamond Ring; 14 K Aqua Marine Ring; 14 K tanzanite Ring; ...

Choose from the diamond and green tourmaline flower ring in 18 karat yellow gold and platinum, the diamond and tanzanite daisy basket ring in platinum and ...

... September - Sapphire or Zircon; October - Opal or Tourmaline; November - Topaz or Citrine; December - Turquoise, Blue Topaz or tanzanite.

This includes cobalt coating on gemstones such as tourmaline and tanzanite, and diffusing materials into blue topaz increase color intensity while skirting ...