was the key to their success. Why?.
Boulder Opal
Boulder opal is precious opal that has a sandstone or ironstone base.
Sunstone
Sunstone is less well known than labradorite and moonstone, although it is colourful and fascinating to design.
Precious Black Opal
Black opal has a dark background, which can be dark grey, dark blue, dark green or grey-black - the darker the
Alexandrite
Alexandrite is a transparent gemstone with a remarkable colour-change property: it appears leaf green in daylight and
Faceted Square Cuts
The second group of faceted cuts includes straight-sided girdle shapes: squares, rectangles, octagons, triangles,
Hiddenite
This is the raw gemstone variety of spodumene. It was discovered e the United States in 1879 by AE Ridden, hence its
Sphene
Sphene is highly regarded as a gemstone by collectors, but scarcity has kept it out of the commercial market until now.