# Natural Green Sapphire 1.29 Ct Radiant Cut Loose Gemstone | Heat Treated September Birthstone

**Natural green sapphire weighing 1.29 carats, featuring a radiant cut, green-yellow colour, VS clarity and heat treatment. Offered as a loose gemstone for custom engagement rings, pendants and bespoke jewellery designs, complete with certification from an authorised gemmologist.**

This natural green sapphire displays an attractive green-yellow colour and weighs 1.29 carats. Its radiant cut enhances brilliance while maintaining elegant proportions, making it suitable for custom engagement rings, pendants and personalised fine jewellery. Sold as a loose gemstone, it allows complete flexibility for bespoke jewellery design.

### Quick Summary

-   Natural Green Sapphire
-   Weight: 1.29 Carats
-   Radiant Cut Loose Gemstone
-   Colour: Green Yellow
-   Clarity: VS
-   Treatment: Heat Treated
-   Birthstone: September
-   Gemmologist Certificate Included

Green sapphire belongs to the natural corundum family and is valued for its durability and distinctive colour. With a hardness of 9 on the Mohs scale, 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. Green sapphires provide a distinctive alternative to traditional blue sapphires while retaining the durability and versatility for which sapphires are recognised.

## Gemstone Specifications

-   **Identification:** Natural Sapphire
-   **Species:** Natural Corundum
-   **Variety:** Green Sapphire
-   **Shape & Cut:** Radiant Cut
-   **Clarity:** VS
-   **Weight:** 1.29 Carats
-   **Colour:** Green Yellow
-   **Measurements:** 6.00 × 5.60 × 4.00 mm
-   **Treatment:** Heat Treated
-   **Birthstone:** September

## Certification & Authenticity

This sapphire includes a certificate issued by an authorised gemmologist confirming its identity as a natural sapphire and disclosing treatment information.

**Seller Notes:** Dust-like and hairline inclusions are visible under magnification. These characteristics are commonly found in natural earth-mined sapphires and are consistent with natural gemstone formation.

## Jewellery Applications

This listing is for a loose gemstone only and does not include a finished jewellery setting.

Suitable applications include:

-   Custom engagement rings
-   Radiant cut solitaire rings
-   Halo ring designs
-   Pendants and necklaces
-   September birthstone jewellery
-   Fine bespoke jewellery
-   Gemstone collections

Custom jewellery services are available in yellow gold, white gold, rose gold, silver and platinum with optional diamond accents.

## Why Choose This Gemstone?

Natural green sapphires are appreciated for their distinctive colour, durability and versatility in custom jewellery. Each gemstone displays its own natural characteristics, making every sapphire unique while offering the lasting beauty associated with the corundum family.

## Explore Related Collections

-   [Green Sapphire Collection](/collections/green-sapphire-gemstones)
-   [All Loose Sapphire Gemstones](/collections/)
-   [Custom & Ready-to-Wear Sapphire Jewellery](/collections/sapphire-gemstone-jewelry-rings)
-   [Gemstone Education Articles](/blogs/gemstone-articles)

## Shipping & Returns

Worldwide shipping is available with tracking and insurance included. Buyers are responsible for any applicable customs duties or import taxes.

Returns are accepted within 15 days of delivery provided the gemstone is returned unused and in its original condition, in accordance with our published return policy.

## Frequently Asked Questions

### Is this a natural green sapphire?

Yes. This gemstone is a natural earth-mined green sapphire and is not synthetic or laboratory created.

### Has this sapphire been treated?

Yes. This gemstone has undergone heat treatment, as disclosed in the specifications and gemmologist 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 sapphire be used for an engagement ring?

Yes. Its durability and radiant cut make it suitable for custom engagement ring designs and everyday wear when professionally set.

### Will the gemstone colour vary under different lighting?

Yes. Natural sapphires may display subtle colour variation under different lighting conditions, which is a normal characteristic of natural gemstones.

## Details

- **Price:** 450.0 USD
- **Vendor:** NASHGEMS
- **Type:** teal sapphire
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## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 450.00 USD | In stock |

## Images

- Light mint green teal sapphire from NASHGEMS, 1.29-carat heated green sapphire gemstone showing vibrant color and clarity.
- Light mint green teal sapphire from NASHGEMS, 1.29-carat heated mint green sapphire gemstone with vibrant color and clarity.
- Light mint green teal sapphire displaying 1.29-carats from NASHGEMS, showcasing its vibrant color and polished gemstone cut.
- Light mint green teal sapphire, 1.29-carat heated gemstone by NASHGEMS, showcasing its vibrant color and polished cut.
- Light mint green teal sapphire 1.29-carats from NASHGEMS, showcasing the heated, vibrant gemstone with a smooth cut and rich color.
- Light mint green teal sapphire from NASHGEMS, 1.29-carat heated teal sapphire gemstone with vibrant color and clarity.
- Light mint green teal sapphire, 1.29 carats, heated, from NASHGEMS, showcasing the gemstone's vibrant color and clarity.
- Light mint green teal sapphire from NASHGEMS, 1.29-carat heated teal sapphire gemstone with vibrant color and clarity.
- Light mint green teal sapphire 1.29-carat from NASHGEMS, showcasing its vibrant color and polished cut.

## Additional Information

- **Google: Custom Product:** Yes
- **Carat:** 1.29
- **Stone Shape:** Radiant
- **Treatment:** Heat Treated

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> Source: [NASHGEMS](https://www.nashgems.com/products/natural-green-sapphire-1-29ct-radiant-cut-loose-gemstone)
> Updated: 2026-07-08