Buying a loose gemstone gives you independence, you get the freedom to make your own choice, your own jewelry design.
A 1.61-carat natural blue sapphire, round, 6.92 to 7.09 mm across and 4.47 mm deep, with a brilliant-cut crown over a step-cut pavilion. It comes with GIA Sapphire Origin Report 2241017779, dated August 3, 2026, which records the stone as Heated.
Expert Opinion
Ahmed Shareek's Assessment
"I like a round stone for a ring because a round outline has no corners or points. Before you buy, watch the videos of this one and look up the report number on GIA's own site. That is what I would do."
What the GIA Report Records
GIA Sapphire Origin Report 2241017779 describes one loose stone. These are the values it prints:
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Species: Natural Corundum
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Variety: Sapphire
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Weight: 1.61 carats
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Measurements: 6.92 - 7.09 x 4.47 mm
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Shape: Round
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Cutting Style, Crown: Brilliant Cut
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Cutting Style, Pavilion: Step Cut
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Color: Blue
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Transparency: Transparent
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Geographic Origin: Sri Lanka
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Additional Results: Heated
Under Comments, GIA prints: "Any statement on geographic origin is an expert opinion based on a collection of observations and analytical data." You can check the report number on GIA's Report Check service.
The Cut
The crown, the upper part of the stone, is cut with brilliant facets. The pavilion, the lower part, is cut with step facets. The trade calls this combination a mixed cut. GIA gives the diameter as a range, 6.92 to 7.09 mm, measured across the stone, with a depth of 4.47 mm.
Clarity
In our own assessment, the stone shows inclusions visible under 10× magnification and looks eye-clean at a normal viewing distance. GIA colored-stone reports carry no clarity grade, so this is our description, not GIA's.
Buying Guidance
- Look up report number 2241017779 on GIA's Report Check service and compare it with the GIA values listed above.
- Watch the videos of this stone. If you would like more, ask us for additional photos or a video call.
- Give your jeweler the measurements, 6.92 to 7.09 mm across and 4.47 mm deep, before choosing a setting, so the mounting is made or adjusted to this stone.
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Try Before You Buy: Customers in the United States can see the stone in person before committing. Ask us how it works.
Learn More About This Gemstone
Gemstone Data — At a Glance
| Item # |
CG8133 |
| Weight |
1.61 carats |
| Species / Variety |
Natural Corundum / Sapphire |
| Shape |
Round |
| Cutting Style: Crown |
Brilliant Cut |
| Cutting Style: Pavilion |
Step Cut |
| Measurements |
6.92 - 7.09 x 4.47 mm |
| Color |
Blue |
| Transparency |
Transparent |
| Geographic Origin |
Sri Lanka |
| Additional Results |
Heated |
| Clarity |
Inclusions visible under 10×, eye-clean — our own assessment; GIA colored-stone reports carry no clarity grade |
| Mohs Hardness / Toughness |
9 / Excellent — characteristics of the species, as printed on the report |
| Birthstone |
September — as printed on the report, for sapphire |
| Laboratory Report |
GIA Sapphire Origin Report 2241017779, August 3, 2026 |
Every row except Item # and Clarity reproduces a value printed on the GIA report; the notes after a dash are ours.
Care
GIA publishes its own cleaning guidance for sapphire, which treats ultrasonic and steam cleaning as usually safe for heat-treated stones. We prefer lukewarm water, mild soap and a soft brush for a stone we have not set ourselves, because we cannot see how it will be held. That is our preference, not a warning from the report. Store it apart from other jewelry, and once it is set, take it off for heavy physical work.
One of a Kind
This is a single natural sapphire, not a laboratory-grown stone. The stone described on GIA Sapphire Origin Report 2241017779 is the stone you receive.
What's Included
- GIA Sapphire Origin Report 2241017779
- The sapphire, packed in a gem sleeve
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