Agate

large piece of agate

Amazonite

amazonite mineral

Amethyst

amethyst the purple variety of the mineral quartz

Ammonite

ammonite fossil

Angelite

eight individual angelite stones grouped together

Apatite

green apatite crystals

Aquamarine

two aquamarine museum exhibits

Aragonite

aragonite rough mineral

Aventurine

three green aventurine stones

Azurite

a large specimen of rough azurite

Beryl

green beryl specimen on display in London's Natural History Museum

Bloodstone

Bloodstone sphere on display at the Smithsonian Museum of Natural History

Calcite

pink calcite crystals on matrix

Carnelian

polished carnelian stones

Chalcedony

the mineral chalcedony

Charoite

Museum specimen of the mineral charoite

Chrysocolla

large museum specimen of chrysocolla

Chrysoprase

large museum specimen of chrysoprase

Citrine

citrine tumbled stones

Corundum

Corundum1

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