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Natural Forest Green Sapphire 3.59 Ct Emerald Cut No Heat Loose Gemstone | 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$2,200.00 USD

Natural Forest Green Sapphire weighing 3.59 carats, featuring an emerald cut, forest green colour, VVS clarity and no heat treatment. Offered as a loose gemstone for custom jewellery and supplied with certification from an authorised gemmologist.

This natural forest green sapphire weighs 3.59 carats and displays a deep forest green colour with an elegant emerald cut. Sold as a loose gemstone, it is suitable for custom engagement rings, pendants and bespoke jewellery designs, offering buyers a distinctive alternative to traditional blue sapphires.

Quick Summary

  • Gemstone: Natural Forest Green Sapphire
  • Weight: 3.59 Carat
  • Shape: Emerald Cut
  • Colour: Forest Green
  • Clarity: VVS
  • Treatment: No Heat (Unheated)
  • Birthstone: September
  • Certification: Included

Green sapphire belongs to the natural corundum family and is valued for its durability, colour stability and suitability for everyday jewellery. With a Mohs hardness of 9, sapphire is widely chosen for engagement rings and heirloom-quality jewellery when professionally set.

As the September birthstone, sapphire is traditionally associated with wisdom, loyalty and sincerity. Forest green sapphires are appreciated for their rich natural colour and distinctive appearance, making them an attractive choice for buyers seeking something different from traditional sapphire colours.

Gemstone Specifications

  • Identification: Natural Sapphire
  • Species: Natural Corundum
  • Variety: Green Sapphire
  • Shape / Cut: Emerald Cut
  • Clarity: VVS
  • Weight: 3.59 Carat
  • Colour: Forest Green
  • Measurements: 8.40 × 7.70 × 5.60 mm
  • Treatment: No Heat (Unheated)
  • Birthstone: September

Certification & Authenticity

This sapphire includes a certificate from an authorised gemmologist confirming its authenticity and no heat treatment status.

Seller Notes: Clean stone with a darker forest green appearance. Natural colour variation may be visible under different lighting conditions, which is typical of natural sapphires.

Jewellery Applications

This gemstone is sold loose and is not supplied as a finished jewellery item. Suitable applications include:

  • Custom Engagement Rings
  • Solitaire Ring Designs
  • Pendants and Necklaces
  • Statement Jewellery
  • September Birthstone Jewellery
  • Gemstone Collections

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

Why Choose This Gemstone?

Forest green sapphires are admired for their deep natural colour, durability and timeless elegance. The emerald cut highlights the gemstone's symmetry and clarity, making it particularly suitable for sophisticated custom jewellery designs and collectors seeking distinctive natural sapphires.

Explore Related Collections

Browse our Green & Teal Sapphire Collection, explore our Natural Sapphire Collection, browse All Gemstones, view Ready-to-Wear Jewellery, or learn more through our Gemstone Education Articles.

Shipping & Returns

Worldwide shipping is available with tracking and insurance included. Delivery times vary depending on destination. Buyers are responsible for applicable customs duties or import taxes. Returns are accepted according to our published return policy, provided the gemstone is returned unused and in its original condition.

Frequently Asked Questions

Is this a natural forest green sapphire?

Yes. This gemstone is identified as a natural green sapphire belonging to the corundum mineral family.

Has this sapphire been heat treated?

No. This gemstone is an unheated (no heat) natural sapphire.

Does this gemstone include certification?

Yes. A certificate from an authorised gemmologist is included.

Is this sold as a loose gemstone?

Yes. The sapphire is sold loose and is not supplied as a finished ring or jewellery item.

Can this sapphire be used for an engagement ring?

Yes. Its durability, emerald cut and no heat status make it suitable for custom engagement ring designs.

Natural forest green sapphire 3.59 ct emerald cut, loose teal sapphire by NASHGEMS for custom engagement rings.
Natural Forest Green Sapphire 3.59 Ct Emerald Cut No Heat Loose Gemstone | September Birthstone Sale price$2,200.00 USD

💎 Not Sure Which Sapphire To Choose?

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We can help you choose the ideal gemstone based on:

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✔ Natural vs heated sapphires
✔ Engagement ring suitability

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WHAT IS A GREEN SAPPHIRE?

 

  • A green sapphire is a natural variety of sapphire that displays shades of green ranging from delicate mint and yellowish-green to olive, moss, and deep forest green. Green sapphires belong to the corundum family, the same gemstone family as blue sapphires.

    The exact color of each gemstone depends on its natural composition and the trace elements present during its formation. Because every natural sapphire is unique, green sapphires can display subtle secondary tones of blue, yellow, gray, or brown, giving each stone its own individual character.

WHAT COLORS CAN GREEN SAPPHIRES HAVE?

 

  • Green sapphires occur in a wide range of natural shades. Depending on the individual gemstone, the color can range from light and refreshing to deep and dramatic.

    Common shades include mint green, light green, yellowish-green, olive green, moss green, and deep forest green. Some gemstones may also display subtle blue-green or grayish-green undertones, creating a more complex and distinctive appearance.

ARE GREEN SAPPHIRES NATURAL?

 

  • Yes. A natural green sapphire is formed naturally within the earth as part of the corundum mineral family. Natural sapphires can occur in many different colors, including green.

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

ARE GREEN SAPPHIRES GOOD FOR ENGAGEMENT RINGS?

 

  • Yes. Green sapphires are an excellent choice for engagement rings because sapphire has a hardness of 9 on the Mohs scale. This makes sapphire one of the most durable gemstones commonly used in fine jewelry.

    A green sapphire engagement ring is particularly appealing for those looking for an alternative to traditional diamonds or blue sapphires. Its distinctive natural color can create a ring that feels personal, elegant, and completely individual.

WHY ARE GREEN SAPPHIRES POPULAR FOR ENGAGEMENT RINGS?

 

  • Distinctive Natural Color: Green sapphires offer a refreshing alternative to traditional blue sapphires and diamonds, with colors ranging from soft mint to rich forest green.

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

    Every Gemstone Is Unique: Natural variations in color, saturation, and secondary tones mean that no two green sapphires look exactly alike.

    Versatile Design Options: Green sapphires can look beautiful in yellow gold, white gold, rose gold, and platinum, allowing for a wide range of jewelry styles.

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

 

  • A green sapphire primarily displays green as its dominant color, although it may contain subtle secondary hues. A teal sapphire, on the other hand, generally displays a more noticeable combination of blue and green.

    The boundary between these color descriptions is not always exact because natural sapphires can display a broad spectrum of hues. The appearance of each gemstone should therefore be considered individually.

WHAT IS THE DIFFERENCE BETWEEN GREEN SAPPHIRE AND EMERALD?

 

  • Green sapphire and emerald are different gemstones with different mineral compositions. A green sapphire belongs to the corundum family, while an emerald belongs to the beryl family.

    One of the major differences is durability. Sapphire has a hardness of 9 on the Mohs scale, while emerald is generally softer. Green sapphires can also display a wider variety of green tones, ranging from subtle pastel colors to deep olive and forest greens.

WHAT FACTORS SHOULD I CONSIDER WHEN BUYING A GREEN SAPPHIRE ONLINE?

 

  • When buying a green sapphire online, consider the gemstone's color, saturation, clarity, cut, carat weight, shape, dimensions, treatment status, and certification information where available.

    High-quality photographs and videos are particularly important because green sapphires can look different depending on lighting conditions. Reviewing accurate measurements can also help when selecting a gemstone for a custom engagement ring or other jewelry design.

HOW DO I CHOOSE THE BEST GREEN SAPPHIRE?

 

  • The best green sapphire is ultimately the one whose color and character appeal most to you. Some buyers prefer vivid green tones, while others are drawn to subtle mint, olive, moss, or forest-green shades.

    When selecting a gemstone, consider the overall color, brightness, cut, clarity, size, shape, and how the sapphire will be used in your jewelry design. It is also useful to view the gemstone under different lighting conditions where possible.

WHICH METALS PAIR WELL WITH GREEN SAPPHIRES?

 

  • Green sapphires can be paired with a variety of precious metals. Yellow gold can enhance warmer green and olive tones, while white gold and platinum can create a clean and contemporary contrast.

    Rose gold can also complement certain green sapphires and create a distinctive contrast. The best metal depends on the particular shade of green and the overall style of the jewelry.

WHAT JEWELRY CAN BE MADE WITH A GREEN SAPPHIRE?

 

  • Loose green sapphires are highly versatile and can be used in many types of custom jewelry. Popular choices include engagement rings, wedding jewelry, pendants, earrings, bracelets, and bespoke designs.

    Because sapphire is durable, it is particularly suitable for jewelry that is intended to be worn regularly. The shape and dimensions of the gemstone can help determine the most suitable setting and design.

ARE GREEN SAPPHIRES RARE?

 

  • Natural sapphires occur in a wide variety of colors, and the availability of green sapphires can vary considerably depending on the specific shade, size, clarity, origin, and overall quality of the gemstone.

    Some shades and color combinations may be more difficult to find than others. Rather than focusing only on rarity, buyers should consider the overall beauty, color, quality, and individuality of the particular gemstone.

ARE GREEN SAPPHIRES HEATED OR UNHEATED?

 

  • Green sapphires may be offered as either heated or unheated, depending on the individual gemstone. Treatment information should always be reviewed carefully before purchasing.

    Unheated sapphires have not undergone heat treatment, while heated sapphires have been subjected to controlled heating processes. The treatment status can influence rarity, price, and buyer preference, so certification or disclosure from the seller is important.

ARE GREEN 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.

    When selecting a valuable green sapphire, reviewing the available certification and gemstone information can help buyers make a more informed purchasing decision.

HOW DO I CARE FOR A GREEN SAPPHIRE?

 

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

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

WHY CHOOSE A GREEN SAPPHIRE FROM NASH GEMS?

 

  • At Nash Gems, we offer a selection of natural loose green sapphires in a variety of shades, shapes, sizes, and characteristics. Each gemstone has its own individual color and personality.

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