Ceylon Natural Violetish Blue Sapphire
At Danu Group, we focus on presenting gemstones with clear information about their identity, treatment, origin and documentation—because a valuable gemstone journey begins with transparency.
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| Weight | 3.17 Ct |
|---|---|
| Dimensions | 9.33 × 7.32 × 5.45 mm |
| STYLE OF CUT | Oval Mixed |
| COLOR | blue |
| SPECIES | natural corundum |
| VARIETY | UnHeated Blue Sapphire |
| REFRACTION INDEX | 1.760–1.768 |
| PLEOCHROISM | Distinct |
| ABSORPTION SPECTRUM | Recognized |
| HARDNESS | 9 |
| SPECIFIC GRAVITY | 3.80–4.05 |
| ADVANCED TESTING | FTIR Spectroscopy Tested |
| CLARITY | VVS (high grade) |
| QUALITY GRADE | High Quality |
| TRANSPARENCY | Transparent |
| ORIGIN | Ratnapura, Sri Lanka 🇱🇰 |
| CERTIFICATE | GGTL – Gem Testing Laboratory Certified (Advanced Testing with Origin Determination/ FGA, BSc, MGA (SL), MSc (Gemology), GIA Alumni Member) |
| BIRTHSTONE | September |
| DESTINY NUMBER | 8 |
| PLANET | Saturn 🪐 |
| ZODIAC SIGN | Capricorn ♑, Aquarius ♒ |
| WEARING FINGER | middle finger of the right hand |
| WORN FOR | Good luck, wisdom, protection, mental clarity, and inner strength |
| SYMBOLIZES | Truth, loyalty, wisdom, protection, happiness, and lasting love |
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Ceylon Natural Violetish Blue Sapphire – 3.17 ct Unheated Sapphire from Ratnapura, Sri Lanka
What Is a Ceylon Natural Violetish Blue Sapphire?
This 3.17 ct Ceylon Natural Violetish Blue Sapphire is a natural corundum sapphire from Ratnapura, Sri Lanka, one of the country’s most historically important gemstone-producing regions. Its transparent blue appearance, oval mixed cut and unheated status make it an interesting example of natural Ceylon sapphire.
The gemstone measures 9.33 × 7.32 × 5.45 mm and displays a blue body colour with distinct pleochroism. Its appearance can show subtle colour variation as the stone is viewed from different directions.
From Ratnapura, Sri Lanka
Ratnapura is internationally associated with Sri Lanka’s traditional alluvial gemstone industry. Natural sapphires recovered from Sri Lankan gem-bearing gravels have become an important part of the country’s coloured gemstone heritage.
For Danu Group, origin is not simply a marketing description. Understanding where a gemstone comes from is part of documenting its journey from source to finished stone.
Unheated Natural Sapphire
One of the notable characteristics of this sapphire is its unheated status. The GGTL report identifies the stone as Natural Corundum – Un-Heated Blue Sapphire. No heat treatment is indicated in the supplied laboratory report.
Unheated sapphires are particularly interesting to collectors because their colour and internal characteristics have not been modified through conventional heat treatment.
Laboratory Certification
The sapphire has been examined by GGTL – Global Gem Testing Laboratory, with advanced FTIR spectroscopy testing and origin determination indicated on the supplied documentation. The report provides important gemological information supporting the stone’s natural corundum and unheated blue sapphire identification.
Why Is This Sapphire Appealing?
Its 3.17 ct size, transparent appearance, oval mixed cut, VVS clarity, Sri Lankan origin and documented unheated status give it strong appeal for collectors and fine-jewelry clients seeking a natural Ceylon sapphire.
At Danu Group, we focus on presenting gemstones with clear information about their identity, treatment, origin and documentation—because a valuable gemstone journey begins with transparency.
Q & A
Frequently Asked Questions
Yes. Also , The GGTL report identifies the gemstone as Natural Corundum – Un-Heated Blue Sapphire for more confirmation of identity.
No. The supplied GGTL report identifies it as Un-Heated Blue Sapphire, meaning no heat treatment is indicated in the laboratory examination.
The gemstone weighs 3.17 carats.
It measures approximately 9.33 × 7.32 × 5.45 mm.
The certificate records the colour as Blue. Visually, the stone can be described as having a violetish-blue character depending on viewing direction and lighting.
It has an Oval Mixed Cut, combining different facet arrangements to create a balance between colour and brilliance.
The stone is graded VVS / High Grade, with a transparent appearance.
The mineral species is Natural Corundum. Blue sapphire is the blue variety of corundum.
Corundum has a hardness of 9 on the Mohs scale, making sapphire one of the most durable natural gemstones for jewelry.
The reported refractive index is 1.760–1.768.
The report records distinct pleochroism. This means different colours or colour intensities may be observed when the sapphire is viewed along different crystallographic directions
The reported specific gravity range is 3.80–4.05.
Unheated means that the sapphire has not undergone conventional heat treatment intended to alter its colour or clarity characteristics. The supplied GGTL report identifies this stone as an Un-Heated Blue Sapphire.
Collectors may value unheated sapphires because their natural colour and internal characteristics have not been intentionally modified by conventional heat treatment. However, quality, colour, clarity, cut and origin remain important when evaluating each stone.
The stated origin is Ratnapura, Sri Lanka 🇱🇰, one of the country's best-known historic gemstone-producing regions.
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