Natural Blue Sapphire weighing 1.25 carats, featuring a radiant cut, cornflower blue colour and heat treatment, offered as a loose gemstone for custom jewellery and gemstone collections.
This natural blue sapphire weighs 1.25 carats and displays an attractive cornflower blue colour. Its radiant cut enhances brilliance while maintaining elegant proportions, making it suitable for custom engagement rings, pendants, and bespoke jewellery designs. Supplied loose, this gemstone offers flexibility for personalised jewellery creation.
Quick Summary
- Gemstone: Natural Blue Sapphire
- Weight: 1.25 Carat
- Shape: Radiant Cut
- Colour: Cornflower Blue
- Clarity: VVS
- Treatment: Heat Treated
- Birthstone: September
- Certification: Included
Blue sapphire is a variety of natural corundum valued for its durability, colour stability, and timeless appeal. Ranking 9 on the Mohs hardness scale, sapphire is suitable for jewellery intended for regular wear when professionally set.
As the birthstone for September, blue sapphire is traditionally associated with loyalty, wisdom, and sincerity. Its enduring popularity makes it a preferred gemstone for engagement rings, anniversary jewellery, and heirloom-inspired designs.
Gemstone Specifications
- Identification: Natural Sapphire
- Species: Natural Corundum
- Variety: Blue Sapphire
- Shape / Cut: Radiant
- Clarity: VVS
- Weight: 1.25 Carat
- Colour: Cornflower Blue
- Measurements: 6.10 × 5.12 × 4.00 mm
- Treatment: Heat Treated
- Birthstone: September
Certification & Authenticity
This sapphire is accompanied by a certificate issued by an authorised gemologist confirming its identity as a natural blue sapphire and disclosing any treatments.
Seller Notes: No significant inclusions are visible to the unaided eye. Please refer to images and certification for additional gemstone characteristics.
Jewellery Applications
- Custom Engagement Rings
- Solitaire Ring Designs
- Halo Ring Designs
- Pendants and Necklaces
- September Birthstone Jewellery
- Custom Fine Jewellery Projects
- Gemstone Collections
This gemstone is sold loose and is not supplied as a finished jewellery item. Custom jewellery services are available in gold, rose gold, white gold, silver, and platinum.
Why Choose This Gemstone?
Cornflower blue sapphires are appreciated for their balanced colour, versatility, and timeless appearance. The radiant cut combines brilliance with structured facet patterns, making it suitable for both classic and contemporary jewellery designs.
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Shipping & Returns
Worldwide shipping is available. 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.
Does the sapphire include certification?
Yes. A certificate from an authorised gemologist is included.
Can this sapphire be used in an engagement ring?
Yes. Its durability and radiant cut make it suitable for custom engagement ring designs.
Is this sold as a loose gemstone?
Yes. This sapphire is sold loose and is not supplied as a finished jewellery item.








