The chief of these are the garnets, crystallising in the cubic system, and anhydrous. The garnet is usually in the form of a rhombic dodecahedron, or as a trisoctahedron (called also sometimes an icosatetrahedron), or a mixture of the two, though the stones appear in other cubic forms. In hardness they vary from 6-1/2...
Read more »
Posts Tagged ‘ spessartite ’
Amber
amethyst
beryl
calcite
Chalcedony
charm
chemical
chrysoberyl
chrysolite
cleavage
colour
corundum
crystal
diamond
emerald
Fluorspar
garnet
Garnets
gem
gems
Hardness
jewel
Lapis lazuli
mineral
minerals
opal
opaque
poison
powder
precious stone
precious stones
Precious stones & minerals
quartz
remedy
rock-crystal
ruby
sapphire
spinel
stone
stones
talisman
topaz
tourmaline
turquoise
zircon
Silicates
Gemstones
