Posted 5 years ago
This antique ring features a Lightning Ridge black opal surrounded by diamonds. It was probably an engagement ring.
The opal is 6.5mm diameter so about 1ct, the diamonds are about 3.2mm so at least 10pts each. I'm not very good with diamonds, but think they're European or transitional cuts so they're probably a bit heavier.
I'd date this around 1910 to 1920's, so Edwardian to Art Deco. The shank is rose gold and stamped 18c, and I suspect the top is platinum with a nice millegrain edge, however I've never had it tested, so it could be white gold.
These early rings with Lightning Ridge black opals are rare today, and they were rare back in the day when this was made. The volume of true black opals mined has always been far lower than diamonds, emeralds, rubies or sapphires, and since black opals weren't discovered until 1904 there were no old stones to re-use.
This is a good example of true black opal with jet black (N1) body tone, which makes the colours on the surface really pop, and I've shown the back so you can see how black it is.