was the key to their success. Why?.
Spectrolite
This is the trade name of Finnish labradorite. Its properties are the same, but it tends to have a dark, opaque colour
Spinel
Beauty, rarity, brilliance and value for money make spinel a great gemstone for jewellers and designers. Despite its
Topaz
To many people, the word topaz brings to mind an inexpensive stone that is either a heat-treated bright blue or a
Demantoid
A green variant of Garnet, or more accurately, the rarest, most valuable, most brilliant of green garnets. Exceedingly
Appraising Gemstones
When you are first presented with a tray of gemstones it is easy to feel dazzled and slightly overwhelmed, and to
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.
Sillimanite
For some time, this tough, durable gemstone has been either considered a collector's stone or used industrially (in the