Buying a loose gemstone gives you independence, you get the freedom to make your own choice, your own jewelry design.
A natural 0.87 carat blue sapphire in a round cut, from Sri Lanka (Ceylon), heat treated. At 0.87 carats in a round brilliant, this is a practical accent and smaller center stone — sized for earring applications, three-stone ring center positions, and pendants where a sub-1-carat round sapphire delivers the Ceylon blue character in a compact, versatile format. The round cut maximizes light return and saturation for the carat weight.
Expert Opinion
Ahmed Shareek's Assessment
"Heat treatment is standard practice for the great majority of blue sapphire on the market, including fine Ceylon material, and it has been accepted trade-wide for generations. What matters is honest disclosure, and this stone's treatment is stated plainly. At 0.87 carats with a clean, well-cut round shape and genuinely intense Ceylon blue color, it's an easy stone to recommend for its price point."
Rarity Analysis
Blue is the color most people picture when they hear the word "sapphire," and Ceylon (Sri Lankan) material has long set the benchmark for that color. Here is how this particular stone stacks up against that standard.
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Color: An intense, saturated blue from Sri Lanka — the most classic and widely recognized sapphire color, with broad, enduring demand across every market.
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Size: At 0.87 ct, this is a compact, accessible weight — well suited to earrings, accent stones, and smaller centerpieces rather than a large solitaire.
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Treatment: Heated — a standard, widely accepted practice for blue sapphire that is disclosed honestly here and does not reduce the stone's desirability.
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Clarity: Eye-clean, with no inclusions visible to the naked eye under normal viewing conditions.
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Documentation: This stone is offered without third-party laboratory certification — worth stating plainly so buyers can weigh it against the price.
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Combined effect: A classic, well-cut Ceylon blue in a practical, wearable size — solid everyday value rather than a rare showpiece.
Buying Guidance
A few practical points worth considering before you buy this stone.
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Confirm the setting fit: At 5.96 x 5.92 x 3.50 mm, check this diameter against your intended setting or mounting before ordering, especially for earrings or a three-stone layout.
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Treatment is standard: Heat treatment is normal for blue sapphire and is disclosed here — it is not a defect and requires no special care beyond normal handling.
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No third-party certification: This stone is not accompanied by a GIA or other independent lab report. That helps keep the price accessible, but it also means the grading above reflects Crescent Gems' in-house assessment rather than an independent lab's — buyers who want third-party verification should factor that into their decision.
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Check the color in different light: Blue sapphire can shift subtly between daylight and indoor lighting — view the stone, or its video, under more than one light source if possible.
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Try Before You Buy: Take advantage of Crescent Gems' try-on program to see this sapphire in person before committing.
Learn More About This Gemstone
Gemstone Data — At a Glance
| Item # |
CG8315 |
| Carat Weight |
0.87 ct |
| Species / Variety |
Natural Blue Sapphire (Corundum) |
| Shape / Cut |
Round, Portuguese cut |
| Dimensions |
5.96 x 5.92 x 3.50 mm |
| Color / Intensity |
Blue, Intense |
| Phenomenon |
None |
| Treatment |
Heated |
| Origin |
Sri Lanka (Ceylon) |
| Clarity |
Eye-clean |
| Transparency |
Transparent |
| Hardness |
9 (Mohs) |
| Certification |
Not specified |
Why Choose this 0.87 ct Round Ceylon Blue Sapphire?
Round Ceylon blue sapphire at 0.87 carats is a practical size for earring center stones, three-stone ring configurations, and smaller pendant designs where the budget or the design calls for a sub-1-carat sapphire without compromising the Ceylon blue quality. The round brilliant format ensures maximum color display for the weight.
Key Benefits of this Natural Blue Sapphire
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Ceylon Blue Origin
Sri Lanka — the benchmark source for vivid, transparent blue sapphire.
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Round Brilliant Versatility
The format that fits the widest range of settings — earrings, pendants, three-stone rings.
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Accessible Sub-1-Carat Weight
The size that makes Ceylon blue sapphire accessible for earrings and accent applications.
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Maximum Light Return
Round brilliant cut returns more light than any other shape for this color.
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Durable for Daily Wear
Corundum at Mohs 9, second only to diamond.
Features
- Carat Weight: 0.87 Carats
- Gem Type: Natural Blue Sapphire
- Cut: Round
- Origin: Sri Lanka (Ceylon)
- Treatment: Heat Treated
- Color: Blue
- Clarity: Eye-clean — no visible inclusions under normal viewing
- Hardness: 9 on the Mohs scale
This 0.87 ct round Ceylon blue sapphire has been hand-selected for the vividness of its blue and the quality of its round cut — the Ceylon blue character in a compact, versatile format.
Why Customers Love This Gemstone
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Ceylon Quality at Sub-1-Carat: The benchmark blue in an accessible weight.
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Round Compatibility: Fits any earring, pendant, or three-stone setting without custom work.
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Daily Wear Durability: Mohs 9 — appropriate for any daily jewelry application.
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Trusted Source: Treatment disclosed honestly, Ceylon origin confirmed.
Owning this 0.87 ct round Ceylon blue sapphire means choosing the most recognized sapphire quality in a practical, versatile format.
Perfect Uses for this 0.87 ct Blue Sapphire
- Earring center stones (pair)
- Three-stone ring center stone
- Pendant solitaire
- September birthstone jewelry
- Accent stone in custom multi-stone design
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