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1.60 carat emerald-cut green sapphire, unheated, measuring 7.75 × 6.05 × 3.44 mm. A clear, even green with the architectural depth typical of step-cut faceting. Origin is presented as the store's own assessment of Sri Lanka (Ceylon), as the AGCL report does not address geographic origin. Accompanied by AGCL Report #M2510408, confirming weight, dimensions, color, and treatment.
Expert Opinion
Ahmed Shareek's Assessment
"What stands out on this stone is how clean and even the olive-green color reads across the whole table in an emerald cut — paired with its unheated status, that's a combination you don't see together very often at this size."
Rarity Analysis
Green sits outside the mainstream of sapphire production, which remains dominated by blue, pink, and yellow material — making a well-saturated green stone like this one a minority find rather than a routine one.
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Color: Green sapphire reaches the market in far smaller volumes than blue, pink, or yellow sapphire, and an even, well-saturated olive green like this one — without the brownish or grayish undertones common in the color — is harder to source consistently.
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Size: Most green sapphires available in eye-clean quality run under 1 carat once faceted; at 1.60 carats this stone sits above the size most buyers typically find on offer.
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Treatment: The large majority of sapphires sold today, including most green material, are heat-treated to improve color and clarity. This stone is unheated — the less common, and more highly regarded, outcome.
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Cut: The emerald cut's open step facets leave color and clarity with nowhere to hide, so a stone has to be genuinely even and clean to be cut this way rather than into a shape that conceals imperfections.
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Documentation: The AGCL report independently confirms weight, dimensions, color, and treatment (no heat) — verification that isn't available for undocumented green sapphires sold without a lab report.
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Combined effect: It's the pairing of unheated origin with an even, saturated green in an above-average carat weight and a revealing step cut — not any single factor alone — that makes this particular stone difficult to replace once sold.
Buying Guidance
A few practical points to weigh before purchasing this specific stone:
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View it from the face-up angle in a few different light sources. Step-cut faceting like this emerald cut shows color evenness clearly, but green sapphire can shift subtly in tone between daylight and indoor lighting, so it's worth checking both before finalizing a setting choice.
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Consider the proportions when choosing a setting. At 7.75 × 6.05 × 3.44 mm this is a moderately shallow stone; a setting with adequate girdle support, rather than an open, unsupported bezel, will help protect the elongated octagonal corners typical of an emerald cut.
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Confirm treatment disclosure when comparison-shopping. Not every green sapphire listed online states its heat-treatment status clearly — check that an "unheated" claim is backed by an independent lab report, as this one is by AGCL.
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Factor in availability. Given how few unheated green sapphires of this size and evenness reach the market in a given year (see Rarity Analysis above), a comparable replacement is not always readily available if this one sells.
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Use the Try Before You Buy option if you would like to see the stone in hand before finalizing the purchase.
Learn More About This Gemstone
Gemstone Data — At a Glance
| Item # |
CG8320 |
| Carat Weight |
1.60 ct |
| Species / Variety |
Natural Green Sapphire (Corundum) |
| Shape / Cut |
Emerald Cut (Octagonal) |
| Dimensions |
7.75 × 6.05 × 3.44 mm |
| Color / Intensity |
Green (Olive Green) |
| Phenomenon |
None |
| Treatment |
Unheated |
| Origin |
Sri Lanka (Ceylon) — store's own assessment; not addressed by the AGCL report |
| Clarity |
Eye-clean |
| Transparency |
Transparent |
| Hardness |
9 (Mohs) |
| Certification |
AGCL Report #M2510408 |
Features
- SKU: CG8320
- Carat Weight: 1.60 carats
- Variety: Green Sapphire
- Shape: Octagonal
- Cutting Style: Emerald Cut
- Dimensions: 7.75 × 6.05 × 3.44 mm
- Gem Type: Natural Green Sapphire
- Origin: Sri Lanka (Ceylon) (store's own assessment; not addressed by the AGCL report)
- Treatment: Unheated
- Color: Green (Olive Green)
- Transparency: Transparent
- Clarity: Eye-clean — no visible inclusions under normal viewing
- Certification: AGCL Report #M2510408
- Hardness: 9 on the Mohs scale
Care
- Clean with lukewarm water and mild soap using a soft brush
- Store separately to avoid surface contact
- Remove before heavy physical activity
- Avoid ultrasonic or steam cleaners
One of a Kind
This is a single natural gemstone, not a manufactured or lab-created replica — no two sapphires form with identical color, inclusions, and internal character. Once this stone sells, it's gone; there is no duplicate. What you see documented on the AGCL report is the exact, individual stone you receive.
What’s included with this Green Sapphire
- AGCL Report #M2510408
- Gemstone packed in a gem sleeve
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