was the key to their success. Why?.
Corundum
The most important of the gem families, corundum provides us with two of the best-known stones: ruby and sapphire. The
Semi Precious Gemstones
If a gemstone is not precious, or organic, or artificial…. then the odds are it’s a semi precious stone.
Inclusions and Optial Phenomena
Much of the beauty of demstones is due to the way they react when light shines on them.
Shell
You can saw it, file it, carve it, drill it and engrave it: shell is one of the easiest of materials to work with.
Sphene
Sphene is highly regarded as a gemstone by collectors, but scarcity has kept it out of the commercial market until now.
Faceted Square Cuts
The second group of faceted cuts includes straight-sided girdle shapes: squares, rectangles, octagons, triangles,
Prehnite
Prehnite only fully reveals itself as a beautiful gemstone once it has been worked. The rough material hides its