Natural blue sapphire, 1.13 carats, pear mixed cut, transparent blue color, heated, IGI certified gemstone

A natural blue sapphire gemstone being held by tweezers, displayed against a leafy background.

Natural Blue Sapphire 1.13 ct – Pear Mixed Cut, Heat Treated, IGI Certified

Name: Natural Blue Sapphire 1.13 ct – Pear Mixed Cut, Heat Treated, IGI Certified
Brand: SOSNA Gems & Jewellery
SKU: SP02164484GR
Price: 31509.00 CZK
Availability: InStock

31.509,00 CZK

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Gemstone Specification

Carat Weight 1.13

Dimensions 7.26 x 5.16 x 3.64 mm

Color Blue

Clarity Slightly Included

Shape Pear Mixed Cut

Treatment Heat Treatment

Origin Madagascar

Certification IGI

This natural blue sapphire weighs 1.13 carats and displays a vivid transparent blue color with attractive brilliance and elegant light reflection. The gemstone is expertly fashioned in a pear mixed cut measuring 7.26 × 5.16 × 3.64 mm, combining classic sophistication with a graceful elongated silhouette ideal for fine jewelry designs. Its rich blue hue and lively sparkle highlight the timeless appeal of natural sapphire.

The gemstone features natural inclusion patterns, confirming its authentic natural origin and individuality. According to the IGI report, the stone shows indication of heating, a standard and widely accepted enhancement commonly used to improve color and clarity in natural sapphires. Certified by the International Gemological Institute (IGI), this sapphire comes with independent verification of its gemstone identity and characteristics.

Its elegant pear cut, vibrant blue coloration, and IGI certification make this sapphire an excellent choice for bespoke rings, pendants, and refined collector jewelry.

Natural Blue Sapphire 1.13 ct – Pear Mixed Cut, Heat Treated, IGI Certified

31.509,00 CZK

From gemstone to jewelry

This example illustrates one possible way a gemstone may be developed into a bespoke piece. Final design is always defined individually, based on the stone and its natural character.

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Each gemstone is professionally examined and accompanied by clear gemological information regarding its characteristics, treatments, and origin.

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Gemological overview

Technical and gemological information about this gemstone variety.

Gemological profile

Sapphire is a gemstone variety of the mineral corundum, valued for its durability, clarity, and wide range of colors. While blue sapphire is the most widely recognized, sapphire occurs naturally in many hues, including yellow, pink, green, purple, and colorless, with each color expressing a distinct visual character.
Chemically composed of aluminum oxide (Al₂O₃), sapphire crystallizes in the trigonal crystal system and belongs to the oxide mineral group. In gem-quality material, sapphire typically displays a vitreous luster with transparent to translucent clarity.
The refractive index of sapphire generally ranges from approximately 1.76 to 1.77, producing a restrained brilliance that emphasizes color depth rather than strong dispersion. Sapphires are found in numerous regions worldwide, with notable sources including Sri Lanka, Madagascar, Myanmar, Thailand, Australia, and parts of Africa, each associated with characteristic color and clarity profiles.

Durability & suitability

With a hardness of 9 on the Mohs scale, sapphire offers exceptional durability suitable for everyday jewelry when properly set and worn with standard care. Its high resistance to scratching and lack of cleavage make it one of the most reliable colored gemstones for regular wear.
Sapphire performs exceptionally well in rings, pendants, earrings, and bracelets, including designs intended for frequent use. While natural inclusions may be present, particularly in certain origins and colors, thoughtful setting design helps protect the stone and maintain its appearance over time.

Treatments & authenticity

Sapphires are commonly treated to enhance color and clarity, most often through heat treatment, a practice widely accepted within the gem trade when properly disclosed. Other treatments may exist in the market and are always evaluated and disclosed on an individual basis.
Any treatments or enhancements are always clearly stated for each individual gemstone. Every stone is professionally examined, and transparent disclosure is regarded as a fundamental part of responsible gemological practice, allowing clients to make informed and confident decisions.

Our approach to gemstones

We focus primarily on natural, untreated gemstones, valued for their authenticity and inherent beauty.
Any treatments or enhancements are always clearly disclosed, allowing our clients to make informed decisions based on transparent gemological standards.

Sosna Gems is not a licensed financial advisor. Gemstones are collectibles, not securities. Past performance is not indicative of future results. Legal & risk disclosure .