was the key to their success. Why?.
Jade
Jade is a gemstone with two incarnations - one abundant, the other a rare precious gem. Yet both jadeite and nephrite
Amazonite (microcline)
Amazonite is an attractive opaque stone that, due to the presence of lead, is either striped blue and white or a solid
Nevada Black Opal
The rarest and most valuable opals are bright on black. Black background opals show off the rainbows of fire, or play
Topaz
To many people, the word topaz brings to mind an inexpensive stone that is either a heat-treated bright blue or a
Apatite
"Good things come in small packages" such is the case with apatite. Although seldom seen in jewelry stores, and
Zircon
It is hard to understand why zircon is not more popular with jewelry makers. Its hardness and fracture are no worse
Orthoclase Feldspar
Orthoclase is a moderately cheap transparent stone that is colourless or pale yellow and can have a bluish white
