6 new boulder opal cabs, the longest of which is 12x8 mm,and smallest is 10x7 mm. They are all backed with the native brown stone layer under the opal, traditional. Opals and Turquoise listed so far.
| Transparency | Translucent |
| Gemstone Type | Boulder Opal |
| Item Length | 12 mm |
| Gemstone Shape | Cabochon |
| Gemstone Creation | Natural |
| Vintage | Yes |
| Unit Type | Unit |
| Gemstone Clarity Grade | Translucent |
| Item Width | 8 mm |
| Natural/Lab-Created | Natural |
| Luster | Excellent |
| Cut | Excellent |
| Gemstone Color | Multi Color |
| Fancy Color | Multi Color |
| Cut Grade | Excellent |
| Item Depth | 2 mm |
| Hardness | 6.5 Mohs scale |
| Materials Sourced From | Australia |
| Clarity | Translucent |
| Brand | Unbranded |
| Gemstone Form | Polished |
| Country/Region Of Manufacture | Australia |
| Country Of Origin | Australia |
| Wholesale | Yes |
You will find that unbranded loose gems are great for learning lapidary.