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Natural Teal Blue Green Sapphire 1.28 Ct Radiant Cut Loose Gemstone | Heat Treated September Birthstone

One-of-a-Kind Natural Sapphire — Available Only Once

✔ Natural Earth-Mined
✔ Certified Gemstone
✔ Engagement Ring Ready
✔ Free Worldwide Shipping
✔ 15-Day Returns
Sale price$742.50 USD

Natural teal blue green sapphire weighing 1.28 carats, featuring a radiant 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 gemmologist.

This natural teal blue green sapphire combines balanced blue and green tones with a precision radiant cut that enhances brilliance and symmetry. Sold as a loose gemstone, it offers complete flexibility for creating a custom engagement ring, pendant or personalised fine jewellery piece while showcasing the distinctive character of a natural sapphire.

Quick Summary

  • Natural teal blue green sapphire
  • Weight: 1.28 carats
  • Radiant cut loose gemstone
  • Colour: Blue Green
  • Treatment: Heat Treated
  • Birthstone: September
  • Mohs Hardness: 9
  • Gemmologist certificate included

Radiant-cut sapphires combine the brilliance of a brilliant cut with the elegant outline of a step-cut design, creating exceptional light return while preserving colour depth. Sapphire belongs to the corundum family and ranks 9 on the Mohs hardness scale, making it 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. The natural blend of blue and green tones gives every teal sapphire its own distinctive appearance, making it a popular choice for buyers seeking an alternative to traditional blue sapphires.

Gemstone Specifications

  • Gemstone: Natural Sapphire
  • Species: Natural Corundum
  • Variety: Teal Blue Green Sapphire
  • Shape & Cut: Radiant Cut
  • Weight: 1.28 Carats
  • Colour: Blue Green
  • Measurements: 6.20 × 5.10 × 4.10 mm
  • Treatment: Heat Treated
  • Birthstone: September
  • Sold As: Loose Gemstone (Unset)

Certification & Authenticity

This sapphire is supplied with a certificate from an authorised gemmologist confirming its identity and disclosed treatment status.

Seller Notes: A clean natural gemstone. Minor internal characteristics may be visible under magnification and are consistent with natural sapphire formation.

Jewellery Applications

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

Suitable for:

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

Custom jewellery services are available in yellow gold, white gold, rose gold, silver and platinum. Please contact us for custom design options.

Why Choose This Gemstone?

Natural teal blue green sapphires are appreciated for their distinctive colour combination and individuality. Every gemstone displays its own balance of blue and green tones, making each stone unique. The radiant cut enhances brilliance while maintaining strong geometric symmetry, creating an elegant choice for contemporary and classic 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 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 teal blue green sapphire?

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

Has this sapphire been treated?

Yes. This gemstone has undergone heat treatment, which is 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 radiant cut, durability and balanced proportions make it suitable for custom engagement ring designs.

Will the gemstone colour vary under different lighting?

Yes. Natural teal blue green sapphires may display subtle variations in appearance under daylight, indoor lighting and other lighting conditions due to their natural colour composition.

Natural teal blue green sapphire radiant cut 1.28 carat loose gemstone from NASHGEMS, ideal for custom rings or pendants.
Natural Teal Blue Green Sapphire 1.28 Ct Radiant Cut Loose Gemstone | Heat Treated September Birthstone Sale price$742.50 USD

💎 Not Sure Which Sapphire To Choose?

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We can help you choose the ideal gemstone based on:

✔ Color preference
✔ Budget
✔ Ring design
✔ Natural vs heated sapphires
✔ Engagement ring suitability

📩 Get Free Sapphire Consultation


WHAT IS A MERMAID SAPPHIRE?

 

  • A mermaid sapphire is a descriptive term used for a sapphire displaying ocean-inspired colours, often including beautiful combinations of blue, green, aqua, and teal.

    Mermaid sapphire is not a separate mineral variety of sapphire. Instead, the term describes the distinctive appearance of sapphires whose colours can evoke tropical waters, ocean depths, seafoam, and the changing shades of the sea.

WHAT COLOURS CAN A MERMAID SAPPHIRE HAVE?

 

  • Mermaid sapphires can display a beautiful range of ocean-inspired colours. Depending on the individual gemstone, these may include aqua, blue-green, teal, sea-green, turquoise-inspired tones, and deeper ocean-blue shades.

    Some gemstones display a soft and blended appearance, while others show stronger contrasts between blue and green. The exact appearance depends on the sapphire's natural colour distribution, cut, and the lighting in which it is viewed.

WHY IS IT CALLED A MERMAID SAPPHIRE?

 

  • The name mermaid sapphire is inspired by colours commonly associated with the sea. The combination of blue, green, aqua, and teal can create an appearance reminiscent of tropical waters, seafoam, and ocean landscapes.

    The term is descriptive rather than a scientific gemological classification. Different sapphires can therefore be described as mermaid sapphires based on their individual colour combinations and overall visual appearance.

ARE MERMAID SAPPHIRES NATURAL?

 

  • A natural mermaid sapphire is a natural sapphire selected or described for its distinctive ocean-inspired colour combination. Blue, green, and teal tones can occur naturally in sapphires and may be distributed differently from one gemstone to another.

    When purchasing a sapphire, it is important to review the individual product description and available certification information to understand the gemstone's origin, treatment status, and other characteristics.

WHAT IS THE DIFFERENCE BETWEEN A MERMAID SAPPHIRE AND A TEAL SAPPHIRE?

 

  • A teal sapphire generally describes a sapphire with an overall blend of blue and green that creates a recognisable teal appearance.

    A mermaid sapphire is a broader descriptive term focused on an ocean-inspired colour palette. It may include teal, aqua, blue-green, sea-green, and other colours associated with the sea. Some gemstones may fit both descriptions.

WHAT IS THE DIFFERENCE BETWEEN A MERMAID SAPPHIRE AND A PEACOCK SAPPHIRE?

 

  • A mermaid sapphire is generally associated with softer or ocean-inspired combinations of blue, aqua, green, and teal.

    A peacock sapphire is generally associated with richer and more dramatic combinations of blue, green, and teal inspired by peacock feathers. The two descriptive terms can overlap because individual sapphires may display similar colours.

ARE MERMAID SAPPHIRES GOOD FOR ENGAGEMENT RINGS?

 

  • Yes. Mermaid sapphires can make a beautiful choice for engagement rings. Sapphire has a hardness of 9 on the Mohs scale, making it one of the most durable gemstones commonly used in fine jewellery.

    The distinctive blue-green and ocean-inspired colours also make a mermaid sapphire engagement ring an appealing alternative for someone looking for a gemstone with individuality and character.

WHY ARE MERMAID SAPPHIRES POPULAR FOR ENGAGEMENT RINGS?

 

  • Ocean-Inspired Colours: Mermaid sapphires can display refreshing combinations of blue, green, aqua, and teal.

    Unique Appearance: Natural variations in colour mean that every sapphire has its own individual character and appearance.

    Durable & Long-Lasting: With a hardness of 9 on the Mohs scale, sapphire is suitable for engagement rings and jewellery designed for regular wear when properly set and cared for.

    Personal Alternative: A mermaid sapphire engagement ring offers a colourful and distinctive alternative to traditional diamond or single-colour sapphire designs.

HOW DO I CHOOSE THE BEST MERMAID SAPPHIRE?

 

  • The best mermaid sapphire depends on the colours that appeal most to you. Some buyers prefer bright aqua and sea-green tones, while others are drawn to deeper teal or blue-green sapphires with greater depth and intensity.

    When selecting a gemstone, consider its colour balance, saturation, brightness, cut, clarity, size, shape, treatment status, and how it will work within your intended jewellery design.

DOES THE CUT OF A MERMAID SAPPHIRE AFFECT ITS APPEARANCE?

 

  • Yes. The cut of a mermaid sapphire can influence how its natural colours are displayed. The arrangement of facets and orientation of the gemstone can affect the way blue, green, aqua, and teal tones are seen from above.

    Different shapes and cutting styles may emphasise different aspects of the gemstone's colour. Photographs and videos can therefore be particularly useful when choosing a sapphire online.

CAN MERMAID SAPPHIRES LOOK DIFFERENT UNDER DIFFERENT LIGHTING?

 

  • Yes. Like many coloured gemstones, mermaid sapphires can appear somewhat different under natural daylight, indoor lighting, and other lighting conditions.

    Lighting and viewing angle can influence how blue, green, aqua, and teal colours are perceived. This does not necessarily mean that the gemstone is a colour-change sapphire.

WHAT METALS PAIR WELL WITH MERMAID SAPPHIRES?

 

  • Mermaid sapphires can pair beautifully with several precious metals, depending on the individual gemstone's colour combination.

    White gold and platinum can emphasise cool blue and aqua tones. Yellow gold can create a warm contrast with green and teal colours, while rose gold can produce a distinctive contrast with certain blue-green sapphires.

WHAT JEWELLERY CAN BE MADE WITH A MERMAID SAPPHIRE?

 

  • Loose mermaid sapphires can be used for a wide range of custom jewellery designs, including engagement rings, pendants, earrings, bracelets, and bespoke jewellery.

    The individual ocean-inspired colour combination of each gemstone can make it an especially distinctive centrepiece for a one-of-a-kind jewellery design.

ARE MERMAID SAPPHIRES RARE?

 

  • The availability of sapphires described as mermaid sapphires can vary depending on the particular colour combination, size, clarity, origin, and overall quality of the gemstone.

    Because mermaid sapphire is a descriptive term rather than a separate gemological variety, rarity can vary significantly. Particularly attractive combinations of aqua, blue, green, and teal may be more difficult to find.

ARE MERMAID SAPPHIRES HEATED OR UNHEATED?

 

  • Mermaid sapphires may be offered as either heated or unheated, depending on the individual gemstone. Treatment information should always be reviewed before making a purchase.

    Unheated sapphires have not undergone heat treatment, while heated sapphires have been subjected to controlled heating processes. Treatment status can influence rarity, price, and buyer preference.

ARE MERMAID SAPPHIRES CERTIFIED?

 

  • Certification availability depends on the individual gemstone. A gemological laboratory certificate can provide information about a sapphire's identity and may include details relating to natural origin and treatment status.

    Reviewing the available certification and gemstone information can help buyers make a more informed purchasing decision.

HOW DO I CARE FOR A MERMAID SAPPHIRE?

 

  • Mermaid sapphires are durable gemstones, but all fine jewellery should be cared for properly. Cleaning with warm water, mild soap, and a soft brush is generally suitable for most sapphire jewellery.

    The safest cleaning method may depend on the gemstone's treatment, jewellery setting, and surrounding materials. Avoid unnecessary impacts and have frequently worn jewellery settings inspected periodically.

WHY CHOOSE A MERMAID SAPPHIRE FROM NASH GEMS?

 

  • At Nash Gems, we offer a selection of natural loose sapphires featuring distinctive ocean-inspired combinations of blue, green, aqua, and teal. Every gemstone has its own individual colour, pattern, and character.

    Detailed product information, photographs, videos, and gemstone specifications can help you select a sapphire for an engagement ring, custom jewellery project, gemstone collection, or other special purpose.