Crown Corporation (Listing id 91347)

Semi Precious Gemstones
If a gemstone is not precious, or organic, or artificial…. then the odds are it’s a semi precious stone.

Faceted Round Cuts
There are two main categories of faceted stones: round shapes and straight-sided shapes.

Inclusions and Optial Phenomena
Much of the beauty of demstones is due to the way they react when light shines on them.

Natural glass: obsidian and moldavite
Natural glass tends to be overlooked as a gemstone because of the extensive use of manufactured glass in gemstone

Iolite (cordierite or dichroite)
What most people don't realize is that top-quality iolite rivals the best tanzanite in both colour and saturation. If

Bead Cuts and Shapes
Beads are believed to be the earliest of jewels — their simple form could be carved easily out of soft gemstone

Ruby
Ruby is corundum that has a purplish- bluish red to yellow-red colour. The finest colour is pure red with a hint of