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.

Gemmologists who changed the game: Jack Stanley Taylor - Jeweller

Animal specimen - Californian Quail, Trustees of the Australian

New analysis traces origin of gems from Cleopatra's mines and

Chalcedony - Wikipedia

All that glitters: the fossils of Lightning Ridge - Australian

Gemstones: Understanding Identifying Buying – National Museum

Identifying gemstones - The Australian Museum

Western Australian Museum in Perth City Centre - Tours and

Discover 13 Rare Gemstones and Their Meanings - A-Z Animals

In the Australian Outback, Chasing Opal — and Fossils

Australian gemstones dazzle on stamps - Australia Post

Gemstones and Minerals of Australia : Lin, Lin, Sutherland, Gayle

Quartz - The Australian Museum

Gemstones - The Australian Museum