was the key to their success. Why?.
Malachite
Malachite was so popular in the 19th century that the Russian royal family panelled whole rooms with it, and the
Spectrolite
This is the trade name of Finnish labradorite. Its properties are the same, but it tends to have a dark, opaque colour
Sapphire
Sapphies are more abundant than ruby because its colouring agents (impurities) are more common than those of ruby.
Kyanite
Nearly all gemstones have a single hardness value, no matter where it is measured on the crystal.
Cutting to Order
Sometimes it's not possible to find what you want among available gemstones. You may have a design in mind that
Opal
Opal has been attributed with various qualities over the years, from bringing misfortune and hardship to the wearer to
Rainbow moonstone
Rainbow moonstone has a patchy, milky appearance, which comes from the white orthoclase layers and inclusions.