#ceylonbluesapphire

This 1.18 ct Natural Unheated Ceylon Blue Sapphire began as a 2.50 ct facet-grade rough sourced from Pelmadulla village around mining in Sri Lanka. Carefully planned, precisely cut, and professionally certified, it represents every stage of its journey.

From the source to your hand. Every step guided by us.

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A living moment trapped in sapphire for millions of years. This natural unheated Ceylon blue sapphire crystal from Kataragama, Sri Lanka, carries a rare eye-visible two-phase fluid inclusion with a moving gas bubble inside. Its glassy blue body, natural hexagonal crystal form, and preserved internal feature make it a meaningful collector-grade gemstone specimen for gemology lovers and natural sapphire collectors.

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.

https://danugroup.lk/product/ceylon-natural-unheated-blue-sapphire/

The journey of this sapphire began as a 4.00 carat rough crystal discovered through traditional alluvial mining in Rakwana. Carefully selected by Danu Group from trusted local miners, the stone showed promising structure and natural blue saturation.

Under the expertise of our senior master cutter, Mr. Channa, an oval step-style cut was chosen to enhance symmetry, brilliance, and face-up balance. The result: a perfectly proportioned 1.17 ct oval sapphire with vivid Rakwana luster and remarkable transparency.

Why Unheated Matters

Most sapphires in the global market are heat-treated to improve color and clarity. This gemstone remains completely unheated, meaning its color and internal characteristics are entirely natural.

Unheated Ceylon sapphires from Sri Lanka are highly regarded by collectors because they represent geological authenticity and rarity. No artificial enhancement. No modification. Just nature’s work.

Rakwana Sapphire Character

Rakwana sapphires are known for:

Cool-toned deep blues

High natural luster

Excellent light reflection

Balanced tone and clarity

This piece reflects that signature character — vivid yet refined, brilliant yet elegant.

Frequently Asked Questions

Is this sapphire treated?

No. It is certified unheated by CSL Laboratory.

What makes Rakwana sapphires special?

They are known for natural deep blue tones and exceptional luster.

Is 1.17 ct a good size for jewelry?

Yes. This size is ideal for engagement rings, pendants, and fine bespoke designs.

At Danu Group, every gemstone is sourced close to the mine, cut under direct supervision, and delivered with full transparency.

Sri Lanka, historically known as the “Island of Gems,” continues to yield extraordinary specimens, and this 22.95 ct light blue sapphire crystal is a shining example of nature’s brilliance. Measuring 25 x 11.2 x 9.4 mm, this crystal originates directly from the gem-rich Rakwana village around mining in Sri Lanka, a region renowned for producing some of the finest sapphires in the world.

What sets this crystal apart is its glass-like luster combined with naturally formed growth marks, a hallmark of authenticity that speaks to its untouched natural state. Unlike many sapphires that undergo enhancement, this piece remains completely natural and unheated, making it especially desirable to collectors, gem enthusiasts, and jewelers who value originality.

The bi-pyramidal shape further enhances its rarity, offering both aesthetic appeal and strong metaphysical associations. Often referred to as the “Mother form of sapphire,” such crystals are revered not only for their beauty but also for their role in the formation of polished gemstones. With its excellent clarity and lustrous body, this specimen holds exceptional potential for jewelry design—whether left in its raw state for a pendant or carefully set into a custom creation.

Beyond its gemological allure, sapphires carry deep cultural and spiritual meaning. In many traditions, blue sapphires are symbols of wisdom, clarity, and protection. Collectors value them as timeless assets, while healers and spiritual practitioners treasure them for their calming, high-vibrational energy.

From the gem-rich lands of Rakwana village around mining in Sri Lanka comes a stunning treasure—this 1.14 carat natural unheated blue sapphire, well-cut into a heart shape and certified by CSL as a 100% untreated, natural corundum. With fine blue saturation and remarkable VVS clarity, this gemstone radiates purity and quality—both in appearance and origin.

Measuring 7.07 x 6.49 x 3.59 mm, this sapphire stands as a rare blend of expert lapidary work and nature’s untouched gift. The heart shape, often reserved for stones of significant clarity and even body tone, amplifies its emotional value and visual elegance. It's a choice not only for collectors but also for high-end bespoke jewelry, particularly engagement rings or symbolic pendants.

The fact that this gem is unheated further elevates its value—unheated sapphires from Rakwana with such clarity and balance are increasingly scarce. Its fine blue hue, combined with a symmetrical, high-quality cut, allows maximum light performance, resulting in brilliant sparkle and depth.

At Danu Group, we take pride in sourcing directly from mining regions like Rakwana and working closely with miners and cutters to bring authentic, ethically sourced gemstones to the global market. This sapphire reflects not just a stone, but a journey—from the warmth of Sri Lankan soil to the delicate symmetry of a finished gem.

Elegance lies in harmony, and this three-piece natural sapphire set from Ratnapura, Sri Lanka captures that balance beautifully. The centerpiece is a stunning 0.51 ct natural blue sapphire, faceted in a classic oval cut with dimensions of 5.7 x 4.2 x 2.6 mm. On either side sits a matched pair of vibrant pink sapphires, each weighing 0.09 ct with round shapes measuring approximately 2.8 x 2.9 x 1.5 mm. Together, they form a color-coordinated trio perfect for custom ring or pendant designs.

All stones are natural and unheated, preserving their original beauty. The blue sapphire’s soft, vivid tone complements the pink sapphires with subtle contrast and charm. Their clarity is VVS-clean, meaning they exhibit high transparency and minimal inclusions visible even under magnification. This set is not only a beautiful choice for a jewelry artist but also a symbol of meticulous craftsmanship and ethical sourcing.

At City of Gem, every gemstone begins its journey with careful rough selection. All stones in this set were handpicked based on color, clarity, and cutting potential. They were preformed and then faceted by experienced lapidaries to ensure optimal brilliance and proportion.