I gemstones
Indigo Gabbro
Natural gemstone.
Hardness of 6-6.5
J gemstones
None yet but this resource is continually being added to.
K gemstones
Kornerupine
Natural gemstone.
Hardness of 6.5-7
K2 Granite
Natural gemstone.
Hardness of 6
L gemstones
Larimar
Natural gemstone.
Hardness of 5
Larvikite
Natural gemstone. Hardness of 6-6.5
M gemstones
Mahogany obsidian
Natural gemstone.
Hardness of 5-5.5
Mojave Turquoise
Manmade gemstone. Hardness of 5-6
Morganite
Natural gemstone.
Hardness of 7.5
Moldavite
Natural gemstone.
Hardness of 5-5.5
Mushroom rhyolite
Natural gemstone.
Hardness of 6.5 - 7
N gemstones
None yet but this resource is continually being added to.
O gemstones
Oregon Sunstone
Natural gemstone.
Hardness of 6
Orthoceras fossil
Natural gemstone.
Hardness of 3.5-4
Orthoclase
Natural gemstone.
Hardness of 6
P gemstones
Pinolith
Natural gemstone.
Hardness of 3.5-4.5
Prehnite
Natural gemstone.
Hardness of 6-6.5
Phosphosiderite
Natural gemstone.
Hardness of 3.5-4
Psilomelane
Natural gemstone. Hardness of 5-6