Buying a loose gemstone gives you independence, you get the freedom to make your own choice, your own jewelry design.
A natural 2.65 carat bluish-gray spinel in a radiant cut, documented on AGCL Report #M263110. The cool, sophisticated bluish-gray tone is a distinctive alternative to traditional blue gemstones, and spinel's naturally high brilliance produces strong light return without any enhancement. Spinel ranks 8 on the Mohs scale, making it one of the more durable gem species for fine jewelry.
Expert Opinion
Ahmed Shareek's Assessment
"This bluish-gray spinel's cool, sophisticated tone is a genuine alternative to traditional blue gemstones, and its radiant faceting draws out a natural brilliance that needed no help from enhancement to get there."
Rarity Analysis
Fine bluish-gray spinel in this size and cutting quality represents a small slice of overall spinel production, most of which trends toward red, pink, and violet-blue hues rather than this cooler gray-blue tone.
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Color: Bluish-gray is a less commonly seen body color for spinel; most commercial material leans toward red, hot pink, or a warmer violet-blue rather than this cool, muted tone.
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Size: At 2.65 ct, this stone is comfortably above the sub-1.5 ct sizes most commonly available for spinel in fine color.
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Treatment: Spinel as a species is rarely treated in the market to begin with — but on this specific stone, the AGCL report's Comments field is blank and does not address treatment at all. "Unheated" here reflects the store's own assessment, not an independently lab-confirmed determination, and we want buyers to know that distinction plainly.
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Cut: The octagonal, step-cut outline (labeled by AGCL as an Emerald Cut, cut in-house to Radiant Cut proportions) requires precise faceting to return light evenly across a cooler body color — a more exacting cut than a simple round or oval.
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Documentation: An independent AGCL report confirms this stone's weight, dimensions, and clarity — a level of third-party documentation many loose colored stones in this size range don't carry at all.
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Combined effect: It is the pairing of an uncommon cool body color, above-average size, exacting step-cut faceting, and independent documentation — not any single factor — that makes a stone like this difficult to replace once sold.
Buying Guidance
A few practical points to weigh before purchasing this specific stone:
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View it in more than one light. The step-cut facets of an emerald/radiant-style cut show color and any minor inclusions more openly than a brilliant cut, so compare the stone in daylight and indoor light before deciding.
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Plan the setting around the outline. At 9.22 x 6.33 x 5.30 mm, this is an elongated octagonal stone — four-prong or east-west settings that follow the step-cut corners will show off the faceting better than a setting designed for a round or oval stone.
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Ask about additional documentation if you want independent treatment verification. The AGCL report is silent on treatment for this stone — if lab-confirmed treatment status matters to you, ask us about arranging supplementary documentation before purchase.
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Weigh the value case. Spinel in this color and size remains comparatively undervalued next to sapphire of similar quality, which is part of what makes the rarity factors above meaningful for long-term value.
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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 # |
CG8403 |
| Carat Weight |
2.65 ct |
| Species / Variety |
Natural Spinel |
| Shape / Cut |
Emerald Cut (Octagonal outline per AGCL report); Radiant Cut faceting |
| Dimensions |
9.22 x 6.33 x 5.30 mm |
| Color / Intensity |
Bluish Gray |
| Phenomenon |
None |
| Treatment |
Unheated — store's own assessment; the AGCL report's Comments field is blank and does not address treatment |
| Origin |
Sri Lanka (Ceylon) — store's own assessment; not addressed by the AGCL report |
| Clarity |
Very Slightly Included — minor inclusions may be visible under magnification |
| Transparency |
Transparent |
| Hardness |
8 (Mohs) |
| Certification |
AGCL Report #M263110 |
Features
- SKU: CG8403
- Variety: Spinel
- Weight: 2.65 Carats
- Dimensions: 9.22 x 6.33 x 5.30 mm
- Shape: Emerald Cut (Octagonal outline per AGCL report)
- Cut Style: Radiant Cut
- Origin: Sri Lanka (Ceylon) (store's own assessment; not addressed by the AGCL report)
- Treatment: Unheated (store's own assessment; the AGCL report's Comments field is blank and does not address treatment)
- Color: Bluish Gray
- Clarity: Very Slightly Included — minor inclusions may be visible under magnification
- Transparency: Transparent
- Certification: AGCL (Arctic Gem Certification & Laboratory), Report #M263110
This 2.65 ct bluish-gray spinel has been hand-selected for the evenness of its cool tone and the precision of its radiant faceting — a refined, versatile choice for statement jewelry.
One of a Kind
This is a single natural gemstone, not a lab-created or mass-produced stone. No two natural spinels are identical — the exact stone pictured is the exact stone you receive.
Care
Clean with lukewarm water and mild soap using a soft brush; avoid ultrasonic or steam cleaners. Store separately from other jewelry and remove before heavy physical activity.
What's Included
- AGCL Gemstone Report #M263110
- Gemstone packed in a gem sleeve
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