Buying a loose gemstone gives you independence, you get the freedom to make your own choice, your own jewelry design.
An 8.09 ct blue star sapphire, Shape Oval and Cutting Style Double Cabochon, accompanied by its GIA Sapphire Origin Report #2233980218. The report records the Species as Natural Corundum and the Variety as Natural Star Sapphire, the Color as Blue, the Transparency as Translucent, the Phenomenon as Displaying Asterism, and under Additional Results No Indications of Heating.
GIA's report places the geographic origin of this stone in Sri Lanka. The report's Comments read: "Any statement on geographic origin is an expert opinion based on a collection of observations and analytical data."
The name sapphire refers to every color of the mineral corundum except red, and blue is the color the unmodified word denotes. The Color field on this report reads Blue.
Expert Opinion
Ahmed Shareek's Assessment
"Looking at this stone in the hand myself, I sometimes read a grey cast in the blue — that is my own eye and not a grade, and GIA's report records the color as Blue."
What the GIA Report Records
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Species and Variety: Natural Corundum, Natural Star Sapphire. These are the report's own printed field values.
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Phenomenon: Displaying Asterism. That entry records that GIA observed asterism. No laboratory issues a quality grade for a star, and this report carries none.
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Shape and Cutting Style: Oval, and Double Cabochon. The report carries these as two separate fields and so do we.
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Geographic Origin: Sri Lanka, qualified by the printed Comments quoted above.
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Additional Results: No Indications of Heating. We quote that entry in the document's own words, and we do not go beyond it.
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Weight and measurements: 8.09 carats; 12.84 x 10.37 x 5.96 mm.
Buying Guidance
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Read the report yourself: the number is 2233980218 and it can be looked up in GIA's own Report Check service. We publish a scan on this page and will email the full-resolution file on request.
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What no laboratory grades: no laboratory issues a quality grade for a star, and GIA issues no color grade and no cut grade for colored stones. Nothing of that kind appears on this report, and nothing of that kind is asserted on this page. What the report carries is the field values listed above.
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Clarity: the Clarity entry in our own table reads Not applicable. That is our entry, not GIA's; the report carries no clarity field.
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Seeing the asterism: it is a directional effect. To see it, hold the stone under a single concentrated light source. Our Try-On service and additional images on request are both there for that, and we would rather you looked than took our word for it.
Learn More About This Gemstone
Gemstone Data — At a Glance
| As recorded on GIA Sapphire Origin Report #2233980218 |
| Carat Weight |
8.09 ct |
| Dimensions |
12.84 x 10.37 x 5.96 mm |
| Shape |
Oval |
| Cutting Style |
Double Cabochon |
| Color |
Blue |
| Transparency |
Translucent |
| Phenomenon |
Displaying Asterism |
| Species |
Natural Corundum |
| Variety |
Natural Star Sapphire |
| Geographic Origin |
Sri Lanka |
| Additional Results |
No Indications of Heating |
| Corundum species characteristics, not findings about this stone |
| Hardness |
9 (Mohs), a measure of scratch resistance only |
| Lustre |
Vitreous |
| Crescent Gems record |
| Item # |
CG8440 |
| Clarity |
Not applicable (our own entry; the report carries no clarity field) |
| Laboratory Report |
GIA Sapphire Origin Report #2233980218 |
Why Choose this 8.09 ct Blue Star Sapphire?
Because every statement on this page can be checked against one document that travels with the stone. The GIA Sapphire Origin Report #2233980218 carries the weight, the measurements, the shape and cutting style, the color, the transparency, the phenomenon, the species and variety, the geographic origin and the Additional Results entry No Indications of Heating. Where our own table adds an entry of our own, it says so.
Key Benefits of this Natural Star Sapphire
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Its own laboratory report
GIA Sapphire Origin Report #2233980218, issued 01 July 2026, supplied with the stone.
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Additional Results: No Indications of Heating
The report's own entry, in the report's own words.
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Geographic Origin: Sri Lanka
Qualified by the printed Comments: "Any statement on geographic origin is an expert opinion based on a collection of observations and analytical data."
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8.09 carats, 12.84 x 10.37 x 5.96 mm
Stated as field values from the report.
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Hardness: 9 on the Mohs scale
A characteristic of corundum the species, and a measure of scratch resistance only.
Features
- Carat Weight: 8.09 Carats
- Species: Natural Corundum
- Variety: Natural Star Sapphire
- Dimensions: 12.84 x 10.37 x 5.96 mm (per GIA report)
- Shape: Oval
- Cutting Style: Double Cabochon
- Color: Blue
- Transparency: Translucent
- Phenomenon: Displaying Asterism
- Geographic Origin: Sri Lanka
- Additional Results: No Indications of Heating
- Laboratory Report: GIA (Gemological Institute of America), Sapphire Origin Report #2233980218
- Hardness: 9 on the Mohs scale (corundum species)
Care of this Blue Star Sapphire
We prefer not to put a stone we did not set into an ultrasonic or steam cleaner, because we cannot see how it is held. That is our preference, not a warning from the report.
- Warm water, a mild soap and a soft brush
- Remove before heavy physical activity, sports, or manual work
- Store separately from other jewelry
Why Customers Love This Gemstone
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One document, independently issued: GIA Sapphire Origin Report #2233980218.
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Field values, not adjectives: every entry in the table above is either printed on the report or marked as ours.
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You can look before you buy: Try-On service, and further images whenever you ask for them.
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Nothing claimed that no one grades: we assert no star grade and no color grade, because no laboratory issues either. The Clarity entry in our table is our own and is marked as ours.
Perfect Uses for this 8.09 ct Blue Star Sapphire
- Set in a pendant
- Set in a ring
- Bespoke commission from a loose stone
Free US shipping; Try-On available.
Item #: CG8440 | GIA Report #: 2233980218
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