15.85ct Zambian Emerald Three-Stone Ring
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15.85ct Zambian Emerald Three-Stone Ring, Platinum
- 15.85cts cushion cut emerald
- 2.18cts of triangular cut diamonds on the side
- GIA certified
- Size: 6.5
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Lead Time
If the item is not in stock, please allow 2-4 weeks for delivery.
Complete Description
A 15.85-carat cushion-cut Zambian emerald flanked by two colorless diamonds in a three-stone configuration, set in platinum. The center stone measures 18.35 × 14.70mm — well into high-jewelry scale — and is hand-selected for exceptional clarity, an unusually rare specification for natural emeralds.
The emerald is sourced from Zambia, one of the two most prestigious origins for emeralds (alongside Colombia). Zambian emeralds are known for their deep saturation and slightly cooler blue-green tonal range, distinguishing them from the warmer green of Colombian stones.
Why this emerald is exceptional
The C. Dunaigre certification notes "indications of insignificant clarity enhancement" — the highest treatment grade C. Dunaigre awards. Most natural emeralds require minor (F1), moderate (F2), or significant (F3) clarity enhancement to fill surface-reaching fractures; emeralds at the "insignificant" level required practically no oiling at the time of cutting. This is the rarest treatment classification on the gemological scale, indicating natural clarity exceptional for the emerald species. Combined with the substantial 15+ carat weight and "Very Good" quality grade, this is the kind of stone you'd typically see only in the highest tier of fine jewelry.
The certification is from C. Dunaigre Consulting (Switzerland), considered alongside Gübelin, SSEF, and GRS as one of the world's top authorities for colored stone certification.
The three-stone setting
Three-stone configurations are a high-jewelry tradition, where the two side stones frame and enhance the center stone visually. On this ring, the two colorless diamonds flank the emerald, with the white brilliance of the diamonds creating contrast that emphasizes the green of the center. The platinum setting is durable enough to hold a substantial cushion emerald securely, with the cool platinum tone keeping the visual focus on the green of the center stone.
How it wears
A 15+ carat emerald three-stone ring is statement jewelry — best suited for milestone purchases, milestone anniversaries, or right-hand statement rings. The cushion shape sits substantially on the finger, with the long parallel facets of the pavilion catching light through the depth of the stone. The two side diamonds add brightness that frames the green without competing for attention.
This piece pairs with a quiet jewelry approach — simple diamond studs, a thin diamond tennis bracelet, or a delicate pendant. Avoid additional colored stones; let the emerald carry the color story.
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Frequently Asked Questions
We welcome custom inquiries. If you'd like to explore a different scale, diamond ratio, or design variation, please use the Contact to Inquire button and our team will be happy to discuss options with you.
"Insignificant" is the highest treatment grade on the gemological clarity enhancement scale (insignificant → minor → moderate → significant), indicating that the emerald required practically no oiling at the time of cutting. Most natural emeralds require some level of treatment to fill surface-reaching fractures — emeralds at the insignificant level are exceptionally rare, representing natural clarity quality at the top of the species. The C. Dunaigre report confirms this designation specifically.
The emerald is sourced from Zambia, one of the two most prestigious origins for emeralds in fine jewelry (alongside Colombia). Zambian emeralds are known for their deep saturation and slightly cooler blue-green tonal range, distinguishing them from the warmer green of Colombian stones. The C. Dunaigre certification confirms the Zambian origin specifically.
The center stone was certified by C. Dunaigre Consulting in Switzerland on January 27, 2021. C. Dunaigre is considered alongside Gübelin, SSEF, and GRS as one of the world's top gemological laboratories for colored stone certification. The report confirms the Zambian origin, the "Very Good" quality grade, and the insignificant clarity enhancement designation.
A halo setting surrounds a center stone with a ring of small accent diamonds. A three-stone setting places two larger accent stones on either side of the center stone, creating a horizontal line rather than a frame. Three-stone configurations are a more architectural design choice — the two side stones create geometric balance with the center, and the visual emphasis stays on three substantial stones rather than diffusing through many smaller ones. Three-stone settings are also a traditional engagement ring style with symbolic meaning (past, present, future).