Natural bluish green sapphire weighing 0.45 carat, featuring a kite cut, blue green colour and heat treatment. Offered as a loose gemstone for custom engagement rings, pendants and bespoke jewellery designs, complete with certification from an authorised gemologist.
This natural bluish green sapphire displays a balanced blend of blue and green tones that may appear slightly different under changing lighting conditions. Sold as a loose gemstone, it offers flexibility for creating a custom engagement ring, pendant or personalised jewellery design while showcasing a distinctive alternative to traditional blue sapphires.
Quick Summary
- Natural bluish green sapphire
- Weight: 0.45 carat
- Kite cut loose gemstone
- Colour: Blue Green
- Treatment: Heat Treated
- Birthstone: September
- Gemologist certificate included
- Sold as an unset loose gemstone
Bluish green sapphires belong to the corundum family and are appreciated for their distinctive colour combination, durability and suitability for fine jewellery. With a Mohs hardness of 9, sapphire is suitable for jewellery intended for regular wear when professionally set.
As the birthstone for September, sapphire has traditionally been associated with wisdom, loyalty and sincerity. Bluish green sapphires provide a distinctive colour palette for buyers seeking an individual look while retaining the durability and timeless appeal of sapphire.
Gemstone Specifications
- Identification: Natural Sapphire
- Species: Natural Corundum
- Variety: Bluish Green Sapphire
- Shape & Cut: Kite Cut
- Weight: 0.45 Carat
- Colour: Blue Green
- Measurements: 4.00 × 6.10 × 3.30 mm
- Treatment: Heat Treated
- Hardness: Mohs 9
- Birthstone: September
- Sold As: Loose Gemstone
Certification & Authenticity
This sapphire includes a certificate from an authorised gemologist confirming its identity and disclosed treatment.
Seller Notes: A clean gemstone. Minor natural internal characteristics may be present and are consistent with the formation of natural earth-mined sapphires.
Jewellery Applications
This listing is for a loose gemstone only and does not include a finished jewellery setting.
Suitable applications include:
- Custom engagement rings
- Kite cut solitaire rings
- Halo ring designs
- Pendants and necklaces
- Bespoke fine jewellery
- September birthstone jewellery
- Gemstone collections
Custom jewellery services are available in gold, rose gold, white gold, silver and platinum. Please contact us to discuss bespoke design options.
Why Choose This Gemstone?
Bluish green sapphires are valued for their naturally balanced blue and green hues, offering a distinctive alternative to traditional blue sapphires. Their durability, elegant appearance and versatility make them suitable for contemporary and classic jewellery designs, while every natural gemstone displays its own unique character.
Explore Related Collections
Browse related collections and educational resources:
- Blue Green & Teal Sapphire Collection
- Natural Sapphire Collection
- All Loose Sapphire Gemstones
- Custom & Ready-to-Wear Sapphire Jewellery
- Gemstone Education Articles
- Contact Us
Shipping & Returns
Worldwide shipping is available. Buyers are responsible for any applicable customs duties or import taxes. Returns are accepted within our published return period provided the gemstone is returned unused and in its original condition.
Frequently Asked Questions
Is this a natural bluish green sapphire?
Yes. This gemstone is a natural earth-mined sapphire and is not laboratory created or synthetic.
Has this sapphire been treated?
Yes. This gemstone has undergone heat treatment, which is disclosed in the specifications and gemologist certificate.
Is this sold as a finished ring?
No. This listing is for a loose gemstone only. Custom jewellery settings are available separately.
Can this gemstone be used for an engagement ring?
Yes. Sapphire is highly durable and suitable for custom engagement rings when professionally set.
Why can the colour appear different under various lighting conditions?
Natural bluish green sapphires may display subtle colour variation under daylight, indoor lighting and other light sources due to their natural optical characteristics.






