Category: Precious Stones, Crystals & Rocks

Reactor-grade zirconium is essentially free of hafnium. Zircaloy is an important alloy developed...

Gemstone which ranges in colour through yellow, red and orange to green. Colourless, golden-brown...

More common gemstone or crystals used and are helpful around computers are Lapiz lazuli,...

The following are diamond shapes: marquise, oval, heart, pear, asscher, emerald, princess,...

The european cut, or old european cut has hand faceting features and an open culet. Where the Old...

Basics of diamond certification covering the diamond grade report, certification process, 4 cs and...

Various characteristics of diamonds are graded and categorized by the diamond industry. Learning...