5 Carat D (Flawless) Marquise Shape Diamond Ring
The center stone is a 4.96-carat D Internally Flawless Marquise cut natural diamond, GIA certified (Rosenberg ref. 700565). At this combination of color, clarity, and carat weight, the stone occupies one of the rarest positions in white diamond grading — D Internally Flawless stones above four carats account for a fraction of a percent of annual GIA submissions, and Marquise-cut examples at this weight are rarely encountered in the open market.
GIA Color and Clarity: D and Internally Flawless
D is the highest color grade on the GIA white diamond scale, indicating a chemically pure stone entirely free of any detectable color body — no warm tint, no trace of yellow or brown. Internally Flawless is the second-highest clarity grade GIA assigns; it certifies that no inclusions are visible under 10× magnification by a trained grader, and that surface-reaching blemishes are limited to minor polish features. Together, these grades define the upper boundary of the GIA grading system, a threshold that very few natural diamonds of any cut reach, let alone at five carats.
Why Marquise Cut for a D Internally Flawless Stone
The Marquise, a modified brilliant with pointed terminations and an elongated outline, maximizes face-up visual size per carat weight more efficiently than round or cushion cuts — a material advantage at this price tier. Its facet arrangement sustains the optical transparency that a D IF stone demands, allowing light to travel through an inclusion-free crystal without diffusion or interruption. The elongated silhouette also emphasizes finger coverage, an architectural quality that distinguishes the cut in high-clarity, colorless stones.
Platinum Three-Stone Setting with Heart-Shaped Side Stones
Two Heart-shaped side diamonds, 1.07 carats total weight, both graded D IF to match the center stone, flank the Marquise in a handmade platinum mount. Heart-shaped diamonds share a modified brilliant facet pattern with the center stone, producing consistent optical behavior across the trio while their curved outline softens the angular geometry of the Marquise. Platinum is the standard metal for this grade of diamond — its 95% purity eliminates reflective color contamination, and its density provides long-term prong integrity without the work-hardening cycles required by gold alloys.
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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.