was the key to their success. Why?.
Sphene
Sphene is highly regarded as a gemstone by collectors, but scarcity has kept it out of the commercial market until now.
Kyanite
Nearly all gemstones have a single hardness value, no matter where it is measured on the crystal.
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
Rainbow moonstone
Rainbow moonstone has a patchy, milky appearance, which comes from the white orthoclase layers and inclusions.
Natural glass: obsidian and moldavite
Natural glass tends to be overlooked as a gemstone because of the extensive use of manufactured glass in gemstone
Prehnite
Prehnite only fully reveals itself as a beautiful gemstone once it has been worked. The rough material hides its
Ruby
Ruby is corundum that has a purplish- bluish red to yellow-red colour. The finest colour is pure red with a hint of