Ceylon Natural Blue Sapphire Heart
At Danu Group, every gemstone follows a transparent journey—from direct sourcing in Sri Lanka’s mining villages to cutting, polishing, certification, and final presentation. This close connection with the source allows us to preserve not only the gemstone itself but also its complete story.
Verified authenticity with trusted certification
Sourced from mining and cutting origin
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| Weight | 1.18 Ct |
|---|---|
| Dimensions | 6.47 × 6.15 × 3.94 mm |
| COLOR | blue |
| TREATMENT | Natural / Unheated |
| SHAPE | Heart Mixed |
| VARIETY | natural blue sapphire |
| SPECIES | natural corundum |
| CLARITY | VVS (highest Grade) |
| QUALITY GRADE | High Quality |
| ORIGIN | Pelmadulla, 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 | 08 |
| 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 |
From 2.50 ct Rough to a 1.18 ct Heart-Shaped Unheated Ceylon Blue Sapphire: A Source-to-Certification Journey
What is a Natural Unheated Blue Sapphire?
A natural unheated blue sapphire is a variety of corundum that has not received heat treatment to improve its color or clarity. These sapphires retain the appearance created entirely by nature, making them highly appreciated by gem collectors, jewelry enthusiasts, and buyers seeking untreated gemstones. Sri Lanka, known worldwide as the Gem Island, continues to produce some of the finest natural blue sapphires from its ancient alluvial deposits.
This beautiful 1.18 ct Natural Unheated Ceylon Blue Sapphire was cut from a 2.50 ct facet-grade alluvial rough sourced from Pelmadulla village around mining in Sri Lanka. Before cutting, the rough displayed an attractive natural blue body color together with a shape that suggested excellent cutting potential.
Many cutters initially believed the orientation of the rough would produce a finished stone close to one carat or slightly below. However, by carefully studying the crystal shape, natural color distribution, and internal structure, our team saw the possibility of preserving more weight while achieving an elegant heart shape. Through careful planning and precision cutting, the finished gemstone weighs 1.18 ct, exceeding the original expectations while maintaining excellent proportions.
The finished gemstone measures 6.47 × 6.15 × 3.94 mm, features a Heart Mixed Cut, displays an attractive natural blue color, and shows VVS clarity, allowing light to move beautifully throughout the stone.
The sapphire remains completely natural and unheated, preserving the characteristics developed naturally over millions of years beneath the earth before being discovered from Sri Lanka’s gem-bearing alluvial gravels.
Following cutting and polishing, the gemstone underwent professional examination by GGTL (Gem Testing Laboratory) using advanced gemological testing, including origin determination and treatment analysis. The laboratory confirmed the gemstone as Natural Corundum – Unheated Blue Sapphire of Sri Lankan (Ceylon) Origin.
The certificate was supervised by experienced gemologists:
Mrs. Sushita Malkanamage (FGA, BSc, MGA (SL), MSc (Gemology), GIA Alumni Member)
Mr. S.A. Saranga Dharmasiri (FGA (UK) Dip. (Gemology), University of Moratuwa, Gemologists’ Association of Sri Lanka, GIA Alumni Member)
At Danu Group, every gemstone follows a transparent journey—from direct sourcing in Sri Lanka’s mining villages to cutting, polishing, certification, and final presentation. This close connection with the source allows us to preserve not only the gemstone itself but also its complete story.
It’s from the source to your hand. Every step is guided by us. Stones from Danu Group are not just gemstones—they are a journey, and something more.
Q & A
Frequently Asked Questions
This gemstone was sourced as a facet-grade rough directly from Pelmadulla village around mining in Sri Lanka, carefully planned for cutting, professionally faceted into a heart shape, and certified after advanced gemological testing with origin determination.
The natural orientation, color balance, and crystal structure of the rough suggested that a heart shape would preserve both beauty and weight while maximizing the gemstone's natural brilliance.
Yes. It is a natural blue sapphire (Natural Corundum) formed naturally within the Earth and sourced from Sri Lanka.
No. Advanced gemological testing confirmed there is no indication of heating, preserving the gemstone's natural color and characteristics.
Facet-grade rough is natural sapphire rough with suitable clarity, color, and crystal structure for cutting into a faceted gemstone.
Sri Lanka, known as the Gem Island, has produced exceptional blue sapphires for over 2,000 years and is internationally recognized for its natural colors, transparency, and gemstone quality.
Working directly from the source allows Danu Group to study each gemstone before cutting, preserve its natural story, and guide every stage from discovery to certification.
Advanced testing includes gemstone identification, treatment analysis, optical testing, and origin determination to verify the gemstone's natural identity and geographic origin.
Yes. Its elegant heart shape, natural unheated status, durability, and professional certification make it suitable for custom jewelry or gemstone collections.
It reflects the Danu Group philosophy. We remain connected to every stage of the gemstone's journey—from mining village, rough selection, cutting, polishing, advanced gemological testing, and finally to the customer. Our gemstones are not simply traded; their journey is carefully guided and preserved.
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