9K Yellow Gold Vintage Opal and Diamond Illusion Cluster Ring
Ring (Cocktail/Cluster ring) · Yellow Gold; likely alloyed with copper and silver to achieve a pale, warm golden hue.
Purity: 9K (375 fineness) representing 37.5% pure gold content; common for British jewelry for increased durability.
Type
Ring (Cocktail/Cluster ring)
Purity
9K (375 fineness) representing 37.5% pure gold content; common for British jewelry for increased durability.
Gold Type
Yellow Gold; likely alloyed with copper and silver to achieve a pale, warm golden hue.
Weight
Estimated at 1.8 to 2.5 grams based on the dainty band profile and setting size.
Description
A charming vintage British cluster ring featuring three milky white opals set in a row within a sparkling illusion-style head. The slender 9K yellow gold band provides a dainty and elegant foundation, typical of classic English jewelry hallmarked in Birmingham.
Key Features
Full British assay hallmarks; illusion setting designed to make small diamonds look larger; distinct Birmingham 'anchor' mark.
Color & Finish
Pale yellow gold with a high-polish finish; the setting appears to have an illusion-cut white metal or rhodium-plated top to enhance diamond brilliance.
Hallmarks & Stamps
Full British hallmarks visible inside the shank: '375' (fineness), a crown (gold standard), an anchor (Birmingham assay office), and a date letter 'R' or similar.
Dimensions Estimate
Estimated US ring size 6 to 7; shank width approximately 1.5mm tapering to a 6mm cluster head.
Gemstones & Inlays
Features small round cabochon White Opals with visible play-of-color, surrounded by tiny accent diamonds or diamond simulants in an illusion/bezel setting.
Clasp & Closure
Not applicable (closed band).
Chain & Links
Solid, tapered D-shape band profile; slender construction typical of mid-to-late 20th-century dainty jewelry.
Craftsmanship Details
Die-struck shank with a cast cluster head; the stones are held by small integrated prongs within the white-gold-tone illusion plates to maximize light return.
Authentication Indicators
Deeply struck, legitimate British assay marks; '375' stamp consistent with authentic 9-karat gold; aging pattern of the metal is consistent with solid alloy rather than plating.
Origin & Maker
United Kingdom, specifically Birmingham (indicated by the anchor mark); maker's mark prefix is partially obscured but suggests a commercial manufacturer.
Era & Period
Modern/Post-War era; specifically the 1970s-1990s based on the hallmark style and illusion cluster design.
Age Estimate
Circa 1970-1995 based on hallmark typography and the popularity of opal/diamond cluster designs in British jewelry during this period.
Cultural Significance
Opals have historical associations with hope and purity, though in some superstitions, they were considered unlucky for those not born in October.
Condition Notes
Very Good; minor surface scratches on the gold shank; opals appear intact without visible crazing; hallmarks are clear and well-struck.
Value Estimate
Estimated retail value $200-$350; melt value is low (approx. $40-$60) as the value resides in its vintage appeal and gemstone settings.
Care & Maintenance
Opals are delicate (5.5-6.5 on Mohs scale); avoid ultrasonic cleaners, harsh chemicals, and extreme temperature changes. Clean only with warm soapy water and a soft cloth.
Similar Items
14K Opal Trio Rings, 9K Sapphire and Diamond Cluster Rings, or Victorian-era 'Princess' cluster rings which feature more ornate gallery work.
Interesting Facts
9K gold is the minimum standard for gold in the UK; it was historically favored for its hardness and resistance to wear compared to softer 18K or 24K gold.