16 Carat D Flawless Round Brilliant Cut Diamond Stud Earrings
This matched pair of Round Brilliant diamond studs totals 16.50 carats, with each stone graded D color and Flawless clarity, GIA certified (Rosenberg ref. 700639). Matched pairs at this combined weight in D Flawless — the apex of the colorless and clarity scales — are among the rarest configurations produced by diamond cutters annually; sourcing two stones of this grade and approximate size with consistent face-up appearance requires access to a supply that represents a small fraction of annual GIA submissions at this clarity level.
GIA Color and Clarity Grades: D and Flawless
On the GIA D-to-Z color scale, D is the highest designation, indicating the complete absence of detectable body color when the stone is evaluated face-down against a white background by a trained grader. Flawless clarity means no inclusions or blemishes are visible under 10× magnification — fewer than one percent of all GIA-certified diamonds receive this grade. Together, D and Flawless represent the upper boundary of both scales simultaneously, a combination rarely encountered in single stones above five carats, let alone in a calibrated matched pair.
Why Round Brilliant for Diamond Stud Earrings
The Round Brilliant cut is built around a 57- or 58-facet arrangement engineered to maximize light return through the table, producing the highest measurable brilliance of any diamond shape. For stud earrings worn at eye level, face-up optical performance is the dominant criterion — the Round Brilliant’s symmetry and proportions deliver consistent brightness across all lighting environments. At approximately 8 carats per stone, the cut’s efficiency is equally important for distributing visual weight evenly without compromising transparency or fire.
18-Karat White Gold Setting and Mounting
Each stone is set in a handmade 18-karat white gold four-prong basket mount, a configuration that minimizes metal coverage across the pavilion and crown to preserve maximum light entry. The earrings are fitted with screw-back posts — the standard mechanical securing method for high-value diamond studs — which lock the stones firmly against the ear independent of movement. At 75% gold content, 18-karat white gold provides the structural rigidity required to sustain prong tension and dimensional stability over decades of wear.
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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.