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1.00 carat radiant-cut yellow sapphire, heat-treated, measuring 7.22 × 4.18 × 3.35 mm. The radiant cut combines a rectangular outline with brilliant faceting that maximizes the golden-yellow color, and the cropped corners protect against chipping in ring wear. Accompanied by AGCL Report #M256720 (Arctic Gem Certification & Laboratory), confirming weight, dimensions, color, and treatment.
Expert Opinion
Ahmed Shareek's Assessment
"This is a clean, bright lemon yellow with the kind of even saturation that photographs and wears well in daily settings. Heating is the standard, fully disclosed treatment used to bring out this color in sapphire, and the AGCL report backs up the weight, dimensions, and color you're seeing here. At 1.00 carat in a radiant cut, it's a practical, well-proportioned stone for a ring or pendant center."
Rarity Analysis
Where this stone sits in the broader yellow sapphire market comes down to a few factors working together: color, size, treatment, and documentation.
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Color: bright lemon yellow
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Size: at 1.00 ct this is a solid center-stone weight
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Treatment: heated — standard, disclosed
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Clarity: Very Slightly Included
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Documentation: AGCL Report #M256720 confirms weight, dimensions, color, and treatment; the report does not address origin, so the Sri Lanka (Ceylon) origin stated here is the seller's representation rather than a lab-confirmed origin call
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Combined effect: a well-saturated, eye-clean heated yellow sapphire at a practical carat weight, backed by lab documentation of its core characteristics
Buying Guidance
A few practical points to weigh before purchasing this stone:
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Treatment and value: heating is standard practice for yellow sapphire and is disclosed on the AGCL report, so you're paying for the color and clarity you see, not a rare undisclosed treatment premium
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Origin claim: the Sri Lanka (Ceylon) origin is stated by the seller; the AGCL report itself confirms weight, dimensions, color, and treatment but does not make an origin determination, so weigh that distinction if origin matters to your purchase
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Setting considerations: the radiant cut's cropped corners are relatively chip-resistant, but a protective setting (prong or bezel over the corners) is still recommended for ring use
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Sizing: at 7.22 × 4.18 × 3.35 mm this stone has a narrow, elongated face-up profile — worth checking against your setting or finger size before ordering
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Try Before You Buy: use Crescent Gems' try-on option to see the stone in hand under your own lighting before committing
Learn More About This Gemstone
Gemstone Data — At a Glance
| Item # |
CG8272 |
| Carat Weight |
1.00 ct |
| Species / Variety |
Natural Yellow Sapphire (Corundum) |
| Shape / Cut |
Radiant Cut |
| Dimensions |
7.22 × 4.18 × 3.35 mm |
| Color / Intensity |
Lemon Yellow, Intense |
| Phenomenon |
None |
| Treatment |
Heated |
| Origin |
Sri Lanka (Ceylon) — seller-stated; the AGCL report addresses weight, dimensions, color, and treatment, not origin |
| Clarity |
Very Slightly Included |
| Transparency |
Transparent |
| Hardness |
9 (Mohs) |
| Certification |
AGCL Report #M256720 |
Features
- SKU: CG8272
- Carat Weight: 1.00 carat
- Variety: Yellow Sapphire
- Shape: Radiant
- Cutting Style: Radiant Cut
- Dimensions: 7.22 × 4.18 × 3.35 mm
- Gem Type: Natural Yellow Sapphire
- Origin: Sri Lanka (Ceylon)
- Treatment: Heated
- Color: Yellow (Lemon Yellow)
- Transparency: Transparent
- Clarity: Very Slightly Included
- Certification: AGCL Report #M256720
- 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 lab report is the exact, individual stone you receive.
What’s included with this Yellow Sapphire
- AGCL Report #M256720
- Gemstone packed in a gem sleeve
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