Special Categories
Store Categories
- Black Opal (304)
- Boulder Opal (245)
- Coober Pedy Opals (37)
- Dealers Parcels (14)
- Doublets (93)
- Investment Opal (8)
- Koroit Opals (177)
- Opal Beads (26)
- Opal carvings (70)
- Opal Inlay (42)
- Yowah Opals (146)
USE OF BASE BODY TONE GUIDE FOR BLACK OPAL
Added 21 Jul 2010
BODY TONE CHART
The body tone chart printed by the Opal Association has been well accepted but there ae some people who don’t understand it.The body tone refers to the darkness of a stone ignoring the backing or brightness of the stone
.A simple technique is to place the stone near the black squar...