Figure 2 in The Tumbarumba Basaltic Gem Field, New South Wales: In Relation to Sapphire-Ruby Deposits of Eastern Australia

Figure 2. Gemstones, Tumbarumba field, photography G. Webb. a—Zircon xenocryst in basalt matrix, Ruby Creek. The crystal is 3 mm across. b—Strongly corroded blue sapphires, Tumbarumba Creek. Crystals to 6 mm across. c—Zoned "agate" sapphires, Tumbarumba Creek. Crystals to 6 mm across. d—Trapiche-like sapphires, with radiating silk zones, Tumbarumba Creek. Crystals to 11 mm acros s. e—Diffuse-zoned, vari-coloured sapphire crystals, Tumbarumba Creek. Crystals to 7 mm across. f—Pink to red corundums, Tumbarumb a Creek. Crystals to 11 mm across.