65 Carat Fancy Vivid Yellow Orange Marquise Shape Diamond Necklace
This necklace features a graduated suite of GIA-certified natural marquise diamonds totaling 65.42 carats, each graded Fancy Vivid Yellow Orange (Rosenberg ref. 4378). Yellow Orange fancy color diamonds in any saturation level represent a small fraction of annual GIA submissions — accumulating a matched suite at Fancy Vivid intensity across a combined weight of this magnitude places this piece in a category rarely encountered at auction or in private collections.
GIA Color Grade: Fancy Vivid Yellow Orange
GIA grades orange and yellow-orange diamonds on a scale from Faint through Fancy Deep. Fancy Vivid Yellow Orange indicates a dominant orange hue with a yellow secondary modifier, achieved at the highest saturation level GIA assigns — Fancy Vivid. This grade requires uniform, face-up color saturation that is consistent in both direct and diffuse lighting. Pure orange and strongly orange-modified diamonds are statistically rarer than Fancy Vivid yellows or pinks; the presence of orange as a primary or near-primary hue results from trace structural irregularities that are less common than the nitrogen-based mechanisms responsible for yellow color.
Why Marquise Cut for Fancy Color Suites
The marquise brilliant combines an elongated pointed outline with a full brilliant facet structure, a geometry that maximizes perceived saturation in fancy color diamonds relative to their face-up surface area. For yellow-orange stones, the marquise’s depth proportions and elongated crown facets intensify color concentration at the table, where the eye evaluates hue in jewelry. When calibrated across a graduated necklace suite, the marquise outline also creates a continuous, arcing visual flow without requiring uniform carat weights across each individual stone.
18-Karat White and Yellow Gold Construction
The necklace is handmade in a combination of 18-karat white and yellow gold — a deliberate dual-metal construction used in high-saturation fancy color suites. White gold prongs and bezels neutral-frame each stone, preventing the metal’s body color from altering the perceived hue of the diamonds, while yellow gold structural elements in the chain and connectors reinforce the warm yellow-orange tonal range of the stones. The 18-karat alloy provides the hardness required for secure long-term prong retention across a multi-stone setting of this scale.
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Care
Preserve the brilliance of your diamond through proper care. We recommend professional cleaning annually and safe storage in a jewelry box or pouch. Avoid exposure to harsh chemicals and extreme temperatures. Learn more about our complete care guide for detailed maintenance and storage best practices.
Warranty
Every Rosenberg piece comes with a warranty covering craftsmanship and authenticity. Our warranty protects against manufacturing defects and ensures your diamond’s certified quality. For warranty details, claims, or to register your purchase, contact our specialists.
Delivery
Your diamond is shipped via insured, tracked delivery with full insurance coverage included. Packages are carefully packaged in premium materials and require a signature upon delivery. Review our shipping and delivery policy for complete details about timelines and handling.