• Unheated natural green sapphire 1.64 carat oval cut loose gemstone
  • Natural green sapphire 1.64ct unheated oval gemstone on white background
  • Oval cut unheated green sapphire loose stone for fine jewelry
  • 1.64 carat natural green sapphire no heat treatment loose gemstone
  • High quality unheated green sapphire oval cut for custom engagement ring
  • Natural untreated green sapphire 1.64ct oval shape gemstone
  • Loose unheated green sapphire gemstone oval cut close-up view
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Shiraz Jewelry

Unheated Natural Green Sapphire 1.64 Carat Oval Cut | Loose Gemstone for Fine Jewelry

Unheated Natural Green Sapphire 1.64 Carat Oval Cut | Loose Gemstone for Fine Jewelry

฿9,900.00 THB
฿9,900.00 THB
Sale Sold out

This 1.64 carat unheated natural green sapphire features a refined oval cut that brings out its soft yellow-green hue and lively brilliance. Carefully selected for color balance and clarity, this sapphire remains completely unheated, preserving its natural formation and rarity.

Green sapphires are admired for their durability and understated elegance, making them an excellent choice for custom engagement rings, heirloom jewelry, or investment gemstones. With no heat treatment applied, this stone retains its authentic crystal structure and natural color — a quality increasingly sought after by collectors and fine jewelry enthusiasts.

Expertly sourced and inspected, this loose sapphire is ideal for bespoke ring, pendant, or bracelet designs.

✨ Gemstone Details

  • Gemstone: Natural Green Sapphire
  • Carat Weight: 1.64 carat
  • Treatment: Unheated (No Heat)
  • Shape / Cut: Oval Cut
  • Clarity: Eye-clean
  • Origin: Natural sapphire
  • Use: Fine jewelry, engagement ring, custom design

🌿 Why Choose an Unheated Green Sapphire?

  • Naturally rare and untreated
  • Durable for everyday wear
  • Unique color with timeless appeal
  • Ideal for custom and one-of-a-kind jewelry

Details

Make:

Metal:

Gemstone: Green Sapphire

Gender: Unisex

Color: Green

Age: Adults

Shipping & Returns

Please refer to our Refund Policy

We ship internationally using registered service. Free shipping for total orders from items available online of min THB 35,000 via DHL/UPS.

Care Instructions

  • Clean with lukewarm water, mild soap, and a soft toothbrush.
  • Store separately to avoid scratches.
  • Avoid harsh chemicals, hand sanitizers, and perfumes.
  • Remove before swimming, working out, or gardening.
  • Avoid rapid temperature changes to protect the gemstone(s).
  • Have prongs checked annually by a professional jeweler.
View full details

Engagement Rings - FAQ

What is the best gemstone for an engagement ring besides diamond?

Sapphire, especially unheated ones from Thailand, are a durable and beautiful alternative. They come in various colors including blue, green, and pink, and are ideal for daily wear.

What’s the difference between heated and unheated gemstones?

Heated stones have been enhanced for color, which is common. Unheated stones are rarer and considered more valuable by collectors.

Is it okay to choose a colored gemstone for an engagement ring?

Absolutely! Many modern couples choose sapphires, spinels, or emeralds to express personality and style.

How do I know my ring size?

You can visit us in person or use a printable ring sizer. If it’s a surprise, try borrowing a ring they wear on their ring finger.

Can I customize my engagement ring?

Yes! We offer custom ring designs. You can choose the gemstone, setting, and style that suits your love story.

Gemstones - FAQ

Explore

  • What is an unheated green sapphire?

    It’s a natural sapphire that hasn’t undergone heat treatment to enhance color. It’s rare, collectible, and more valuable.

  • What gemstones is Thailand famous for?

    Thailand is especially known for sapphires (blue, green, yellow), rubies, spinel, zircon, and garnet. The Chanthaburi and Kanchanaburi regions are particularly famous for gem mining.

  • Are gemstones cheaper in Thailand?

    Often yes, because Thailand is close to gem sources and has lower cutting costs. But prices vary depending on the type, quality, and treatment of the stone.

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    Have you tried a Thai Green Sapphire ?

    Have you ever tried a Thai Green Sapphire? Look, it costs a fraction of the price of blue sapphires, and we have sourced the finest green sapphires from Thailand! With their unique hue and exceptional clarity, these gems are sure to add a touch of elegance to any jewelry collection. Read more about green sapphire