This is a beautiful black opal with good to fine brightness and plain blue play of colors.The colors are always moving bright and sparkly as stone is rotated. Evaluation Appraiser Included $2,510.00 CAD
| Ref.: | 15074444 |
| Gemstone | Opal |
| Variety | Black opal |
| Carat Weight | 5.44 carat |
| Shape / cutting style | Oval / Cabochon |
| Base color | N3 (Dark Grey) Opaque |
| Play-of-color | Plain Blue Thin Color Bar |
Brightness | 3.5 Good to Fine |
| Size | 17.42 mm x 10.59 mm x 4.62 mm |
| Origin | Lightning Ridge (Australia) |
Opal Facts: Brilliance Scale -This is the scale of brightness used to show the brightness of an opal
| 1 | Faint - Opal has Color but is Fairly Dull |
| 2 | Dull - Opal has Fair color but Nothing Special |
| 2.5 | Somewhat bright |
| 3 | Bright - Opal has Good Color at arms length> |
| 3.5 | Quite bright |
| 4 | Very bright - Opal is Bright and Color is Crisp and Sharp at arms length |
| 4.5 | Extremely bright |
| 5 | Brilliant - Opal is Brilliant and Color Jumps out of the stone at you at arms length |
