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A natural 1.29 ct octagon-shaped teal-grey sapphire, radiant cut, completely unheated, measuring 5.90 × 5.66 × 4.32 mm. Teal-grey sapphire sits at the intersection of blue, green, and gray in natural corundum — a color that shifts across angles and light sources. The radiant cut's step-and-brilliant faceting emphasizes the stone's interior depth and lets the blue-gray-green balance read clearly across the face. Origin is presented as the store's own assessment of Madagascar, as the AGCL report does not address geographic origin. Accompanied by AGCL Report #M2511403, confirming weight, dimensions, color, and treatment.
Expert Opinion
Ahmed Shareek's Assessment
"This 1.29 ct teal-grey sapphire is the kind of stone that reads differently every time you look at it — the color genuinely moves across blue, green, and gray depending on the angle and light, and because it's completely unheated, that shifting character is entirely the corundum's own, not the result of any treatment."
Rarity Analysis
Teal-grey sits in a genuinely less-common corner of the sapphire spectrum — most commercial supply skews toward more straightforward blue, pink, or yellow material, and stones with this specific blue-green-gray balance are cut and offered far less often.
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Color: Teal-grey — a blend that sits at the intersection of blue, green, and gray — is a distinctly less common body color than a single-hue blue or padparadscha sapphire, and represents a small share of overall sapphire production.
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Size: At 1.29 ct, this stone is large enough to show its full color character clearly on the finger, a size range where clean, well-cut teal-grey material is seen less often than smaller melee-sized stones.
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Treatment: The large majority of sapphires on the market are heat-treated to improve color and clarity; this stone is completely unheated, placing it in a smaller share of overall supply.
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Optical character: The way this stone's color shifts across viewing angle and light source is a distinctive trait of this particular teal-grey material, and is not something seen in more uniformly colored sapphires.
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Documentation: AGCL Report #M2511403 independently confirms weight, dimensions, color, and treatment — documentation that isn't always available for stones in this price range.
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Combined effect: an unheated, eye-clean, radiant-cut sapphire with genuine teal-grey color-shifting character and independent certification is a combination that narrows the field considerably — no single factor above is as limiting as all of them together.
Buying Guidance
A few practical points to weigh before purchasing this specific stone:
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View it in more than one light source. Because this teal-grey sapphire's blue-green-gray balance shifts across angle and lighting, look at it under daylight, indoor light, and direct light before deciding — for a stone with this kind of color character, that's genuinely useful information, not a formality.
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Consider how the radiant cut will sit in a setting. The step-and-brilliant faceting of this 5.90 × 5.66 × 4.32 mm radiant cut is built to show off the stone's interior depth and brightness; a setting that keeps the pavilion open, rather than a deep bezel, will let that faceting do its job.
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Verify treatment and certification independently when comparison shopping. This stone is unheated and backed by AGCL Report #M2511403 — confirm any comparable stone's treatment disclosure and certification before comparing price per carat.
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Weigh the rarity factors together, not individually. As outlined above, the color, treatment status, and documentation each narrow the field on their own; together they're why a comparable stone can be hard to find again at this size and price.
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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 # |
CG8328 |
| Carat Weight |
1.29 ct |
| Species / Variety |
Natural Teal-Grey Sapphire (Corundum) |
| Shape / Cut |
Radiant Cut (Octagonal) |
| Dimensions |
5.90 × 5.66 × 4.32 mm |
| Color / Intensity |
Teal-Grey (blue-green-gray, color-shifting across angle/light) |
| Phenomenon |
None |
| Treatment |
Unheated |
| Origin |
Madagascar — store's own assessment; not addressed by the AGCL report |
| Clarity |
Very Very Slightly Included (VVS-equivalent) — eye-clean |
| Transparency |
Transparent |
| Hardness |
9 (Mohs) |
| Certification |
AGCL Report #M2511403 |
Features
- SKU: CG8328
- Carat Weight: 1.29 carats
- Variety: Teal-Grey Sapphire
- Shape: Octagonal
- Cutting Style: Radiant Cut
- Dimensions: 5.90 × 5.66 × 4.32 mm
- Gem Type: Natural Teal-Grey Sapphire
- Origin: Madagascar (store's own assessment; not addressed by the AGCL report)
- Treatment: Unheated
- Color: Teal-Grey (blue-green-gray, color-shifting)
- Transparency: Transparent
- Clarity: Very Very Slightly Included (VVS-equivalent) — eye-clean
- Certification: AGCL Report #M2511403
- 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 Teal-Grey Sapphire
- AGCL Report #M2511403
- Gemstone packed in a gem sleeve
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