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Purificacion Aquino Garcia



Royal Antwerp Gem – Natural Star Sapphire – 7.47 ct – Sri Lanka – No Heat – GRS Swiss Lab Certified

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DESCRIPTION

An impressive Natural Star Sapphire weighing 7.47 ct, displaying a beautiful blue color and a distinct natural star effect (asterism).

The gemstone has an oval cabochon shape and has been partially polished, preserving the characteristics responsible for its optical star phenomenon.

The sapphire has been examined and certified by GRS GemResearch Swisslab, Switzerland. According to the GRS report, its geographic origin is Sri Lanka (Ceylon).

Importantly, the report states “No indication of thermal treatment”, making this an unheated natural Sri Lankan star sapphire.

With its substantial 7.47 ct weight, natural asterism, Sri Lankan origin and no-heat status, this is an attractive stone for collectors as well as a distinctive bespoke jewelry piece.

⸻

SPECIFICATIONS

Gemstone: Natural Star Sapphire
Weight: 7.47 ct
Color: Blue
Shape: Oval
Cut: Cabochon / Partially Polished
Dimensions: 11.79 × 8.40 × 7.06 mm
Optical Phenomenon: Asterism (Star Effect)
Origin: Sri Lanka (Ceylon)
Treatment: No indication of thermal treatment
Laboratory: GRS GemResearch Swisslab, Switzerland
Report No.: GRS2026-097534
Report Date: 17 September 2026

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SHIPPING

The gemstone will be shipped securely, fully insured and with international tracking.

Professional handling and careful packing are provided to ensure safe delivery.

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PACKAGING

The gemstone will be carefully packed in a protective gemstone box/bag together with its original GRS GemResearch Swisslab report.

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DEALER NOTE

PARAIBA – Fine Gemstones

We specialize in carefully selected natural colored gemstones, with a focus on quality, transparency and professional gemological certification.

Our gemstones are individually selected and, where appropriate, submitted to internationally recognized gemological laboratories for independent examination.

⸻

NOTES

The star effect is best observed under a single direct light source and may appear differently depending on the position and intensity of the light.

Photographs and videos are intended to represent the gemstone as accurately as possible. Actual colors may vary slightly depending on lighting conditions, camera settings and screen calibration.

Please refer to the GRS report for the independent gemological identification, treatment information and origin determination.

Sri Lanka - No evidence of treatment-  Lab report: GRS2026-097534

Blue Star Sapphire  - 7.47 ct - Gem research Swiss Lab (GRS) - NO Heat, Ceylon Good Star

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Bottle size

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Material

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Condition

As new - unused

Excellent condition: barely used with minimal signs of wear

Good condition - used with small signs of aging & blemishes

Period

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Style

Contemporary

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Alcohol Percent List

57.1%

46.3%

45.8%

51.5%

48.3%

46.5%

47.3%

48.5%

40.8%

43.4%

53.7%

56.5%

44.8%

47.8%

After 2000

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Blue Star Sapphire - 7.47 ct - Gem research Swiss Lab (GRS) - NO Heat, Ceylon Good Star

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