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1.29 Ct. Brownish Red Spessartite Garnet from Ceylon (Sri Lanka)
This loose stone ships by Nov 29
Item ID: | K33751 |
|---|---|
Dimensions (MM): help | Length: 5.79 Width: 5.17 Height: 4.58 |
Weight: | 1.29 Ct. |
Color: help | Brownish Red |
Color intensity: help | Intense |
Clarity: help | Slightly Included |
Shape: help | Cushion |
Cut: | Mixed Brilliant Cut |
Cutting style: | Faceted |
Enhancements: help | No Enhancement |
Origin: help | Ceylon (Sri Lanka) |
Per carat price: help | $385 |
This transparent 1.29 carat spessartite garnet presents in a cushion shape with precise measurements of 5.79 x 5.17 x 4.58 millimeters, supplied and authenticated by The Natural Gemstone Company. The stone is faceted using a mixed brilliant cut, combining pavilion and crown brilliant facets with selective step facets to enhance both fire and color saturation. Clarity is graded as slightly included at eye level, a realistic and honest assessment for a natural spessartite of this character. Color intensity is classified as intense, a brownish red interaction of manganese and iron chromophore elements that yields a warm, deep hue under daylight. The polish is excellent, with facet junctions crisp and smooth, and the stone is supplied with no enhancement, reflecting natural color and clarity from the Sri Lankan origin reported on accompanying documentation.
From a cutting and gemological perspective the mixed brilliant execution on a cushion outline is deliberate and technically demanding. The cutter preserved table size and crown angles to balance contrast and return, allocating larger brilliant facets to the crown to maximize internal reflection while utilizing shallow step facets near the girdle to prevent windowing and to maintain the perceptible color depth. The pavilion is faceted to a geometry that optimizes the spessartite refractive index range of about 1.79 to 1.87, promoting strong internal reflection and controlled light leakage. Facet symmetry is consistent through the crown and pavilion, contributing to the observed scintillation pattern where flashes of orange red and deeper brown red alternate with hand movement. Slightly included clarity at loupe through eye level indicates localized inclusions typical for spessartine, such as small crystalline growth features or minute needles, which in this specimen act to subtly anchor the color rather than detract from overall transparency.
The narrative of formation for this spessartite garnet traces back to deep time and to very particular geological processes that occurred in Ceylon, now known as Sri Lanka. Over millions of years late stage granitic melts and hydrothermal fluids enriched in manganese migrated through fractures and cavities within older metamorphic host rocks. As these fluids cooled slowly, chemical conditions favored the crystallization of manganese aluminum silicate, the mineral species spessartine. Iron substitutions and complex trace element chemistry in the local matrix influenced chromophore balance, shifting the color vector from the pure vivid orange of manganese dominated material toward the brownish red hue seen in this specimen. The crystal grew in a high temperature to moderate temperature window where slow nucleation allowed for well formed crystal faces, and intermittent fluctuations in fluid composition created zones of differing inclusion density. Subsequent regional metamorphism and tectonic uplift over millions of years brought these pegmatitic and hydrothermal pockets closer to the surface, where later erosional processes liberated crystals. This specific piece was ultimately recovered, sorted, and selected for cutting based on its natural color saturation and structural integrity, and then cut to maximize the interplay of its intrinsic color and the optical performance imparted by the mixed brilliant faceting.
For the connoisseur and the practicing jewelry designer, this 1.29 carat, 5.79 by 5.17 by 4.58 millimeter cushion spessartite offers a predictable set of handling and setting parameters. The material hardness around 7 to 7.5 on the Mohs scale provides good durability for rings and pendants, while the absence of enhancement guarantees stable color under typical wear conditions and careful thermal exposure. The mixed brilliant cut suits a variety of bezel and prong settings, with an emphasis on mounting that preserves table exposure to promote brilliance while supporting the girdle to avoid stress during setting. Care recommendations include standard non abrasive cleaning with mild detergent and warm water, avoiding steam and harsh acids that could affect polish over long term. Collectors valuing provenance will appreciate that The Natural Gemstone Company documents the Sri Lankan origin and the no enhancement status, and that this specimen exhibits an excellent polish and skilled faceting that together reveal both the geological history and the lapidary expertise embodied in the final gemstone.




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