British Vintage Ring with Australian Opal & Ruby (9K Gold, 1970s, Birmingham Hallmarked) with Original Case

A phantasmagoria of iridescent opal
The beauty of British tradition descends upon your finger

Product Description:
This ornate antique ring features a beautiful Australian white opal with play-of-color at its center, delicately surrounded by what appears to be natural rubies. Multiple hallmarks can be found on the inside of the ring, indicating that it was made in Birmingham, England, in the 1970s (375 = 9-carat gold). "N&G" is likely the maker's hallmark, suggesting it was crafted by a skilled workshop of that era. It comes with a classical navy blue antique-style case, making it an ideal gift. The ring is approximately a Japanese size 19, making it suitable for men or those who prefer larger sizes. (R070032)

Specifications:
・Material: 375 gold (9-carat)
・Stones: Australian white opal (center) / Natural ruby or red garnet (surrounding)
・Size: Approximately Japanese size 19
・Country of origin: UK
・Era: 1970 (hallmark "L" = 1970, Birmingham)
・Hallmark details:
　《375》: 9-carat gold (37.5% pure gold)
　《Anchor mark》: Birmingham Assay Office
　《L》: 1970
　《N&G》: Maker's mark (workshop identification)
・Accessories: Antique-style round case (navy)

Recommended Points:
・The fantastical beauty of Australian opal
・Mysterious charm with play-of-color, shifting into a rainbow of hues depending on the light.
・Delicate ruby (or red garnet) halo design
・Classical, flower-like style adds glamour to your finger.

Special Note:
Opal was considered the "stone of hope, purity, and good fortune" since ancient Roman times, but its reputation transformed completely after the discovery of high-quality opal deposits in Australia in the late 19th century. Opals from Lightning Ridge and Coober Pedy in Australia, in particular, were known for their beautiful play-of-color and were extensively exported to the European market. Queen Victoria herself favored opals, leading to an explosion in popularity among the upper classes. Australia was a British colony until the 19th century, with active trade in precious metals and gemstones. Australian opals were highly regarded, even called "the jewels of the British Royal Family," and were frequently handled by London jewelers. Around 1970, with the return of classic styles and the resurgence in popularity of colored stones, opal rings and brooches became fashionable again. Australian white opals were commonly used in British jewelry from this period.

*Based on AI research.