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2.04 carat square cushion-cut blue sapphire, completely unheated, measuring 6.58 × 6.37 × 5.57 mm, from Sri Lanka (Ceylon). Square cushion blue sapphire is an unusual format — the near-1:1 length-to-width ratio is rarer than rectangular or oval cushions in colored gemstones. Accompanied by GIA Report #6233835339, a Sapphire Origin Report confirming weight, dimensions, color, transparency, treatment (no indications of heating), and geographic origin (Sri Lanka).
Expert Opinion
Ahmed Shareek's Assessment
"This 2.04 ct Ceylon sapphire pairs a genuinely unheated blue with a near-1:1 square cushion outline — a cut I see far less often than the standard rectangular cushion, oval, or round. The GIA Sapphire Origin Report backs every claim on this page, including the no-heat finding and the Sri Lanka origin."
Rarity Analysis
Blue is the most recognized and widely produced sapphire color, so this stone's scarcity case rests on treatment, cutting style, and documentation rather than on hue alone.
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Color: Blue is the benchmark sapphire color and the most common in the market — on its own, hue is not a rarity factor for this stone.
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Treatment: The large majority of blue sapphire sold today is heat-treated to improve color and clarity. A genuinely unheated stone with eye-clean clarity, like this one, represents a real minority of blue sapphire production at any size.
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Cut: A near-1:1 square cushion outline is less common than the rectangular cushion, oval, and round shapes that dominate sapphire cutting — cutters more often elongate a piece of rough to conserve weight, so a balanced, equal-sided face like this one reflects a deliberate, less-frequent cutting choice.
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Size: At 2.04 ct, this is a smaller, more accessible stone — we carry larger unheated sapphires at higher price points, and this size tier is meant to make unheated, GIA-documented quality attainable rather than to claim exceptional size.
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Documentation: The GIA Sapphire Origin Report independently confirms the no-heat finding and traces the stone to Sri Lanka — a level of verification not every stone on the market carries.
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Combined effect: No single factor here is exceptional in isolation — blue is common and 2.04 ct is a modest size — but the combination of confirmed no-heat treatment, an uncommon square cushion cut, and independent GIA documentation is what sets this stone apart from typical heated blue sapphire at a comparable size.
Buying Guidance
A few practical points to weigh before purchasing this specific stone:
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Confirm the no-heat finding independently. Don't take "unheated" on faith — GIA Report #6233835339 states the treatment finding directly; you can cross-check the report number using GIA's online report-check tool before you buy.
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Understand how the Mixed Brilliant cut performs. The modified brilliant crown is built for sparkle while the step-cut pavilion is built for color saturation — expect the stone to read brighter toward the crown and deeper/richer toward the pavilion, rather than uniform brilliance across the whole face.
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Plan the setting around the squared corners. A square cushion outline has four corners more exposed to impact than a rounded oval or standard cushion — ask your setter about protective prong placement or corner protection if this stone will see daily wear.
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Compare against heated blue sapphire at the same size. Heated blue sapphire of comparable size and color typically costs less — the premium here is specifically for the unheated status and GIA-confirmed Sri Lanka origin, so weigh whether that documentation matters for your purposes (collecting, resale, or personal significance).
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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 # |
CG8356 |
| Carat Weight |
2.04 ct |
| Species / Variety |
Corundum — Blue Sapphire |
| Shape / Cut |
Square Cushion, Mixed Brilliant (modified brilliant crown, step-cut pavilion) |
| Dimensions |
6.58 × 6.37 × 5.57 mm |
| Color / Intensity |
Blue — Vivid Blue |
| Phenomenon |
None |
| Treatment |
Unheated (no indications of heating) |
| Origin |
Sri Lanka (Ceylon) — GIA confirmed |
| Clarity |
Eye-clean |
| Transparency |
Transparent |
| Hardness |
9 (Mohs) |
| Certification |
GIA Report #6233835339 (Sapphire Origin Report) |
Features
- SKU: CG8356
- Carat Weight: 2.04 carats
- Variety: Blue Sapphire
- Shape: Square Cushion
- Cutting Style: Mixed Brilliant (modified brilliant crown, step cut pavilion)
- Dimensions: 6.58 × 6.37 × 5.57 mm
- Gem Type: Natural Blue Sapphire
- Origin: Sri Lanka (Ceylon) — GIA confirmed (GIA Sapphire Origin Report)
- Treatment: Unheated (no indications of heating)
- Color: Blue (Vivid Blue)
- Transparency: Transparent
- Clarity: Eye-clean
- Certification: GIA Report #6233835339
- 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 GIA report is the exact, individual stone you receive.
What's included with this Blue Sapphire
- GIA Report #6233835339
- Gemstone packed in a gem sleeve
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