18K White Gold Sapphire and Diamond Halo Pendant with Tennis-Style Necklace
Necklace with Pendant · White Gold; Likely rhodium-plated to provide a bright, mirror-like chrome finish, masking the natural warm grey-white tone of the 18K alloy.
Purity: 18K (750 fineness); Contains 75.0% pure gold alloyed with white metals such as palladium or nickel. Standard for high-end fine jewelry.
Type
Necklace with Pendant
Purity
18K (750 fineness); Contains 75.0% pure gold alloyed with white metals such as palladium or nickel. Standard for high-end fine jewelry.
Gold Type
White Gold; Likely rhodium-plated to provide a bright, mirror-like chrome finish, masking the natural warm grey-white tone of the 18K alloy.
Weight
Estimated 45-60 grams total. The heavy setting for the center stone and the continuous link necklace suggest significant gold weight.
Description
An opulent 18K white gold statement piece featuring a majestic oval blue sapphire cradled in a tiered diamond halo, suspended from a continuous diamond tennis chain. The design exudes classical elegance with modern structural integrity.
Key Features
Oversized center stone; seamless transition between pendant and necklace; triple-row halo effect; high-security safety clasp.
Color & Finish
Brilliant cool white with a high-polish finish. The rhodium plating creates a sharp, reflective surface that enhances the brilliance of the stones.
Hallmarks & Stamps
Likely stamped '750' or '18K' on the back of the pendant and on the clasp tongue. May include a designer logo and a 'CT' stamp for carat weight.
Dimensions Estimate
Approximate pendant size: 35mm x 25mm. Necklace length: 16-18 inches. Typical 'Tennis' link width: 3mm-4mm.
Gemstones & Inlays
Center: Large oval-cut deep blue Sapphire (est. 15-20 ctw). Surround and Necklace: Round brilliant-cut Diamonds (est. 8-10 ctw total) in tiered halo and individual চার-prong settings.
Clasp & Closure
Integrated box clasp with double figure-eight safety catches, designed to blend seamlessly into the continuous diamond-set links.
Chain & Links
Tennis-style articulated box links; each stone is set in an individual four-prong basket connected by hidden hinges for fluid movement on the neck.
Craftsmanship Details
Hand-set pavé and prong work; precision casting for the articulation of the necklace links to ensure they do not 'flip' when worn.
Authentication Indicators
Symmetry of the halo settings; articulation of the links; consistent color of the white gold. Red flags to check: '925' stamps (silver) or 'CZ' (cubics).
Origin & Maker
Likely of European or High-end Commercial manufacture (e.g., Italian or American fine jewelry design house). Quality suggests a master bench jeweler production.
Era & Period
Contemporary (2000s-present); The 'Statement' style and precision-cast tennis necklace construction are characteristic of modern luxury high-jewelry.
Age Estimate
Likely manufactured within the last 15-20 years based on the setting style and clasp mechanism.
Cultural Significance
Represents 'Old World' glamour and high social status; often used as a generational heirloom or a 'red carpet' statement piece.
Condition Notes
Excellent condition based on visual inspection; prongs appear secure and rhodium plating shows minimal yellowing or wear.
Value Estimate
Retail replacement Value: $25,000 - $45,000 depending on the heat-treatment of the sapphire and the clarity/color of the diamonds.
Care & Maintenance
Clean with warm soapy water and a soft brush. Professional rhodium replating every 2-3 years. Avoid ultrasonic cleaners if the sapphire has certain inclusions.
Similar Items
Victorian Sapphire Brooch-Pendants; Van Cleef & Arpels 'Snowflake' collection necklaces; Platinum sapphire suite by Tiffany & Co.
Interesting Facts
The 'Tennis necklace' name is derived from the tennis bracelet, famously renamed after Chris Evert's 1987 US Open match. Large sapphires have long been the stone of royalty, popularized by Princess Diana.