| Materials Sourced From | Unknown |
| Country Of Origin | Unknown |
| Shape | Round |
| Main Stone Color | Black |
| Metal | Platinum |
| Secondary Stone | Diamond |
| Main Stone | Opal |
| Main Stone Treatment | Not Enhanced |
| Main Stone Shape | Cabochon |
| Height Of Setting | 10mm/0.39" |
| Base Metal | Platinum |
| Style | Cocktail |
| Main Stone Creation | Natural |
| Color | Silver |
| Diameter Of Setting | 1.95cm/0.77" |
| Sizable | Yes |
| Material | Gemstone, Metal |
| Total Carat Weight | 7.98 |
| Weight | 7.01 grams |
| Certification | Independent |
| Date | Circa 1930 |
| Brand | Unbranded |
| Setting Style | Prong |
| Diamond Clarity Grade | Slightly Included (SI2) |
| Diamond Cut | Eight-cut |
| Type | Ring |
| Metal Purity | 950 parts per 1000 |
| Colored Diamond Intensity | Unknown |
| Theme | Fashion & Costumes |
| SKU | C1530 |
7.20ct Black Opal and 0.78ct Diamond, Platinum Dress Ring - Antique Circa 1930. This stunning, fine and impressive antique black opal ring has been crafted in platinum. The pierced decorated, circular setting displays a feature 7.20ct cabochon cut black opal, claw to the centre of the cluster design.