James St. John:
Gold vein stockwork in limonite (Gold Flake Vein, Farncomb Hill, near Breckenridge, Colorado, USA) 13
James St. John:
Platinum nuggets (placer platinum) (Granite Creek, southern British Columbia, Canada)
Ginny Henley:
faux African amber
Iskandarman:
Blue Borneo amber (Kalimantan amber)
Iskandarman:
South Sumatran amber lots
Iskandarman:
Raw Sumatran amber under UV
Iskandarman:
Oval opalescent Turkish amber
Iskandarman:
Freeform Turkish amber
Iskandarman:
Long teardrop Turkish amber
Iskandarman:
Turkish amber under the mild sunlight
Iskandarman:
Turkish amber (rumanite) that's showed the opalescence
gemstoneJEFF:
9x6 solid white opal
Iskandarman:
The IRS test almost complete, Turkish Amber (RUMANITE)
Iskandarman:
Polished Turkish Amber with sandstones matrix
Iskandarman:
Other view of Turkish Amber