Identifying gemstones - The Australian Museum

Cut gemstones possess all the physical properties of the mineral from which they are cut, although the crystal shape is no longer evident.

Australian Gemstones

Opal Stone Meaning, Uses, Properties, Value, & More

Gems on Canvas: Pigments Historically Sourced from Gem Materials

Minerals, Free Full-Text

Western Australian Museum in Perth City Centre - Tours and

GAA - Gemmological Association of Australia

Exclusive: Gem-like fossils reveal stunning new dinosaur species

Gemstone - Wikipedia

Gem & Mineral Hall at Natural History Museum of LA County

Mineral sciences collection

Australian gemstones dazzle on stamps - Australia Post

Topaz - The Australian Museum

Gemstones: Understanding Identifying Buying – National Museum