18K White Gold Oval Sapphire and Diamond Double Halo Cocktail Ring
Ring (Cocktail/Engagement style) · White Gold; likely rhodium-plated to provide a bright, reflective silvery-white finish.
Purity: 18K (750 fineness); contains 75% pure gold and 25% alloy metals, commonly palladium or nickel to achieve the white color.
Type
Ring (Cocktail/Engagement style)
Purity
18K (750 fineness); contains 75% pure gold and 25% alloy metals, commonly palladium or nickel to achieve the white color.
Gold Type
White Gold; likely rhodium-plated to provide a bright, reflective silvery-white finish.
Weight
4.5 to 6.0 grams, including gemstones. The band appears relatively thin (2mm), but the halo head adds significant metal mass.
Description
An elegant and substantial cocktail ring featuring a deep blue oval sapphire. The center stone is framed by two concentric circles of shimmering diamonds, creating a 'double halo' effect that maximizes the ring's footprint. The slender white gold band allows the intricate head of the ring to be the focal point, making it a classic choice for formal wear or a high-end engagement piece.
Key Features
Double halo setting; tiered elevation of the center stone; slender high-polish shank; contrast between deep blue corundum and white diamonds.
Color & Finish
Cool silvery-white with a high-polish mirror finish. Typical of rhodium-plated white gold.
Hallmarks & Stamps
Likely stamped '18K' or '750' on the inner shank. May include a manufacturer trademark or total diamond carat weight (e.g., 'DO.50').
Dimensions Estimate
Estimated ring size 6-7 (US). Center setting approximately 14mm x 12mm. Band width approximately 2mm.
Gemstones & Inlays
Center: One oval-cut Blue Sapphire (~1.5-2.0 carats), deep navy hue. Surround: Approximately 30-40 round brilliant-cut Diamonds set in a tiered double halo, pavé or micro-prong setting.
Clasp & Closure
Not applicable (solid continuous band).
Chain & Links
Standard 'D-shape' or slightly rounded shank profile. Polished smooth interior for comfort.
Craftsmanship Details
Lost-wax casting method followed by hand-setting of accent stones. Precise prong alignment in the halo indicates high-quality finishing.
Authentication Indicators
Visual hallmark of white gold luster; standard sapphire facet patterns; tiered construction consistent with fine jewelry standards. Note: Blue sapphire should be checked for heat treatment.
Origin & Maker
Likely commercial fine jewelry manufacturer (e.g., Blue Nile, James Allen, or local high-end boutique). Style is consistent with modern Italian or American casting houses.
Era & Period
Contemporary (2000s-present); the 'double halo' design gained immense popularity in the last 15 years, inspired by Edwardian and Art Deco aesthetics.
Age Estimate
Circa 2010–2024. The precision of the micro-halo setting suggests modern CAD/CAM manufacturing and laser welding.
Cultural Significance
Sapphires have historically symbolized nobility and wisdom. Blue sapphire rings gained global cultural prominence following the engagement of Princess Diana (and later Kate Middleton) to Prince William.
Condition Notes
Very Good. The rhodium plating appears intact with minor surface micro-scratches on the bottom of the shank. Settings appear secure.
Value Estimate
Retail: $2,500 - $4,500 depending on sapphire origin/treatment. Melt value: ~$220 - $280. Resale Value: $1,200 - $1,800.
Care & Maintenance
Clean with warm soapy water and a soft brush. Avoid ultrasonic cleaners if the sapphire has many inclusions. Requires periodic rhodium replating (every 1-3 years) to maintain the bright white color.
Similar Items
14K White Gold single halo sapphire ring; Platinum Art Deco target ring; Tanzanite double halo cocktail ring (lighter blue/violet).
Interesting Facts
The 'halo' setting was originally designed to make smaller center stones look larger; however, 'double halos' are now a stylistic choice for maximum brilliance.