Ethiopian Black Opal, Parcel, 200 g
$4,500.00
Our rough and polished Ethiopian black opals from the recently discovered deposit at Stayish mine near the town of Gashena. We source rough and cut and polish custom-made cabochons for jewelry companies and collectors.
External reference: GIA: New Deposit of Black Opal from Ethiopia, 2014.
| Weight | 200 g |
|---|---|
| Lot ID | OP-ET-R-04 |
| Gem type | Black opal – non-hydrophane (does not absorb water) |
| State | Rough |
| Weight | 200 g |
| Shape(s) | Rough |
| Length / width / depth | N/A |
| Body tone | N1 (N1 – N4 are the black body tone types) |
| Brightness | Mixed |
| Treatment | No treatment, 100% natural |
| Origin | Wollo, Ethiopia |
| Note | All rough stones have a no return or refund policy |
| References | GIA: New Deposit of Black Opal from Ethiopia, 2016 |
DEPOSIT CHARACTERISTICS
1. Black opal is found at the contact zone / stratum between volcanic rock and an underlying clay-rich layer;
2. This opal-bearing layer is contained in a single stratum and extends for c. 10-50 km along the mountain belt;
3. The black opal yielded is non-hydrophane and does not absorb water;
4. Extracted material generally comes as nodules and chunks that are 2–5 cm long; and
5. The colour patterns include: harlequin, patchwork, honeycomb etc..
BLACK OPAL DEPOSIT LOCATION
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