10 Carat D Flawless Heart Shape Diamond Pendant Necklace
The center stone is a 10.00-carat D Flawless Heart Shape natural diamond, GIA certified (Rosenberg ref. 700690). Ten-carat Heart Shape diamonds at D color and Flawless clarity represent one of the rarest intersections in the colorless diamond market — Flawless clarity at this weight accounts for a fraction of a percent of annual GIA submissions, and the Heart Shape’s strict symmetry requirements further restrict supply at this scale. Stones meeting all three criteria simultaneously are rarely encountered outside major auction contexts.
GIA Color and Clarity: D / Flawless
GIA grades colorless diamonds on a scale from D through Z; D sits at the top of that scale, indicating a complete absence of detectable body color when assessed under controlled grading conditions against a masterstone comparison set. Flawless (FL) is the highest clarity grade GIA assigns — it indicates no inclusions or blemishes are visible to a trained grader under 10× magnification. The combination of D color and FL clarity in a stone exceeding 10 carats is structurally rare: each grade is uncommon individually, and their co-occurrence at this weight is a significant constraint on natural supply.
Why Heart Shape at This Weight
The Heart Shape is a modified brilliant cut derived from the round brilliant, retaining a full facet complement while introducing a precisely balanced cleft that defines its silhouette. Producing a Heart Shape requires a larger, higher-quality rough crystal than most fancy shapes — left-to-right symmetry must meet narrow tolerances, which increases manufacturing loss and limits the pool of viable rough above 10 carats. At D Flawless, the brilliant facet structure delivers the full light return and optical transparency that this color-clarity combination makes possible face-up.
Platinum Pendant Construction
The diamond is set in a handmade platinum pendant mount, the standard metal for stones of this grade due to its 95% purity, natural white color that preserves D-color neutrality, and structural density that holds prongs without the rhodium plating required by white gold over time. The mount is designed to display the heart outline in the face-up position, with a low-profile frame that does not interrupt the stone’s silhouette. Platinum’s wear resistance ensures long-term prong integrity at a setting weight appropriate to a 10-carat stone.
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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.