Natural Blue Sapphire weighing 2.12 carats, featuring a cushion cut, royal-blue colour and heat treatment, offered as a loose gemstone for custom jewellery and engagement ring designs.
This natural blue sapphire displays a rich royal-blue colour and weighs 2.12 carats. Its cushion cut combines soft rounded corners with attractive brilliance, making it a popular choice for custom engagement rings, pendants, and bespoke jewellery. Offered as a loose gemstone, it provides flexibility for a wide range of jewellery designs.
Quick Summary
- Gemstone: Natural Blue Sapphire
- Weight: 2.12 Carat
- Shape: Cushion Cut
- Colour: Royal Blue
- Treatment: Heat Treated
- Clarity: VS
- Birthstone: September
- Certification: Included
Blue sapphire is a variety of natural corundum valued for its durability, colour stability, and suitability for fine jewellery. Ranking 9 on the Mohs hardness scale, sapphire is well suited for jewellery intended for regular wear when professionally mounted.
As the birthstone for September, blue sapphire has long been associated with loyalty, wisdom, and sincerity in traditional gemstone symbolism. Its timeless appearance has made it one of the most recognised gemstones used in engagement rings and heirloom jewellery.
Gemstone Specifications
- Gemstone: Natural Sapphire
- Species: Natural Corundum
- Variety: Blue Sapphire
- Shape / Cut: Cushion
- Clarity: VS
- Weight: 2.12 Carat
- Colour: Royal Blue
- Measurements: 7.80 × 5.60 × 5.30 mm
- Treatment: Heat Treated
- Birthstone: September
Certification & Authenticity
This sapphire includes a certificate from an authorised gemologist confirming its identity as a natural blue sapphire and disclosing its treatment status.
Seller Notes: Natural crystal inclusions and slight smokiness are present. These characteristics are commonly found in natural gemstones and are consistent with natural formation.
Jewellery Applications
This gemstone is sold loose and is not supplied as a finished ring or jewellery item. It is suitable for:
- Custom Engagement Rings
- Solitaire Ring Designs
- Halo Ring Designs
- Pendants and Necklaces
- September Birthstone Jewellery
- Custom Fine Jewellery
- Gemstone Collections
Custom jewellery services are available using gold, rose gold, white gold, silver, and platinum settings.
Why Choose This Sapphire?
Blue sapphires are valued for their durability, timeless colour, and versatility in jewellery design. Cushion-cut sapphires are particularly appreciated for their balanced shape, attractive brilliance, and suitability for both classic and contemporary jewellery styles.
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Shipping & Returns
Worldwide shipping is available with tracking and insurance included. Delivery times vary by destination. Buyers are responsible for any applicable customs duties or import taxes. Returns are accepted according to our published return policy.
Frequently Asked Questions
Is this a natural blue sapphire?
Yes. This gemstone is identified as a natural blue sapphire.
Has this sapphire been treated?
Yes. This sapphire has undergone heat treatment, which is disclosed in the specifications and certification.
Does the gemstone include certification?
Yes. A certificate from an authorised gemologist is included.
Can this sapphire be used in an engagement ring?
Yes. Its durability and cushion cut make it suitable for custom engagement ring designs.
Is this sold as a loose gemstone?
Yes. The sapphire is sold loose and is not supplied as a finished jewellery item.








