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31.84 Ct. Blue Sapphire Crystal from Ceylon (Sri Lanka)
This loose stone ships by Apr 12
Item ID: | S37013 |
|---|---|
Dimensions (MM): help | Length: 18.62 Width: 10.94 Height: 8.53 |
Weight: | 31.84 Ct. |
Color: help | Blue |
Color intensity: help | Medium |
Clarity: help | Very Slightly Included |
Shape: help | Various |
Cut: | Rough Crystal |
Cutting style: | Crystal |
Enhancements: help | No Enhancement |
Origin: help | Ceylon (Sri Lanka) |
Per carat price: help | $19 |
This listing presents one beautiful translucent 31.84 carat blue sapphire from Ceylon Sri Lanka, offered by The Natural Sapphire Company, with dimensions 18.62 by 10.94 by 8.53 millimeters. The stone is fashioned in a various shape, finished as a rough crystal cut that preserves the natural crystal terminations and growth faces rather than conforming to a standardized faceting schema. The color is graded as medium intensity, a balance that favors both saturation and light return, producing a vivid but not overly deep blue tone that reads well in a variety of mounting environments. Clarity is graded very slightly included, evaluated at eye level, indicating inclusions that are minimal in both size and impact on optical performance when the stone is viewed without magnification. The piece is untreated, enhancement free, and is presented with an excellent polish applied to the exposed faces, which enhances luster and tactile quality while retaining the organic character of the rough crystal form.
Technically speaking, the rough crystal cut on this sapphire emphasizes natural crystallography rather than traditional faceting architecture. The preserved crystal faces reveal growth banding and facetings that are diagnostic of corundum formation in metamorphic veins, and these surfaces, when polished, reflect light in broad, softly diffused flashes rather than the micro mirror returns typical of brilliant faceting. For a lapidary considering further work, this specimen offers multiple viable strategies, depending on the desired final performance characteristics. A conservative approach would preserve the current terminations and apply selective repolishing to augment the existing polish and enhance reflectivity, maintaining the rough aesthetic. A more aggressive strategy would reorient the crystal for a classic mixed cut or custom faceted design that maximizes face up color and symmetry, or alternatively to fashion an elongated step cut to capitalize on the stones length. In all cases the very slightly included clarity grade reduces the risk of large inclusion exposure during reorientation, and the current excellent polish provides a superior starting condition for any further lapidary intervention.
The physical dimensions and carat weight make this sapphire particularly well suited for a statement piece, its 31.84 carats delivering presence and scale that is rarely achieved in a single, untreated Ceylon material. The substantial face up area afforded by the 18.62 millimeter dimension will read large and impressive in a pendant or a signet style ring, and the 8.53 millimeter depth produces a solid table that supports even light distribution across the stone plane. The very slightly included clarity grade is crucial here, because it means the eye level appearance remains largely clean, allowing the medium blue body color to dominate without distraction from internal features. For set work, open backed or partial bezel configurations will maximize light return and color saturation, while a closed back or dramatic bezel will emphasize the stones raw, geological character. The medium intensity of the blue is versatile against different metal colors, presenting a crisp cool contrast with platinum or white gold, and a warmer, classical juxtaposition with yellow gold.
For clients interested in paired or accent stones, consider the contrast offered by White Opal as a complementary element, White Opal providing a soft opalescent field that sets off the sapphires crystalline blue, creating a refined play between translucency and body color. The Natural Sapphire Company notes the provenance, eye clarity, and lack of enhancement, details that are important to collectors and to designers seeking natural, unheated material. We offer bespoke services including lapidary consultation, recutting, and custom mounting, enabling this piece to be transformed into a singular statement ring, an impactful pendant, or a museum quality collection specimen. For those who prefer to retain the current rough crystal aesthetic, we can recommend setting styles that protect natural terminations while showcasing the stones morphology. Please contact our gem specialists at The Natural Sapphire Company for condition reports, viewing options, and design proposals tailored to the technical specifics of this sapphire, including its carat weight, dimensions, cut type, clarity grade, color intensity, polish quality, and origin information.





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