Heat Only Sapphire Gemstones
Browse natural heat only sapphire gemstones, enhanced solely by traditional heat treatment for improved color and clarity.
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Bi-color
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Black Sapphire Heat-Only
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Blue Sapphire Heat-Only
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Brown
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Golden
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Gray Sapphire Heat-Only
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Green Sapphire Heat-Only
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Multicolor Sapphire Heat-Only
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Orange Sapphire Heat-Only
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Pink Sapphire Heat-Only
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Purple Sapphire Heat-Only
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Red Sapphire Heat-Only
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Turquoise Sapphire Heat-Only
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Violet Sapphire Heat-Only
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White Sapphire Heat-Only
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Yellow Sapphire Heat-Only
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Single |
Pairs |
Lots |
Faceted |
Cabochons |
0.69ct Multicolor Sapphire, Cushion, VS
4.5 x 4.5 mm
$ 109.96
2.35ctw Blue Sapphire, Baguette, VS
5 x 3 mm (calibrated)
$ 398.69
0.40ct Purple Sapphire, Oval, VVS
6 x 4 mm (calibrated)
$ 39.84
0.89ct Blue Sapphire, Cushion, VS
5 x 5 mm (calibrated)
$ 70.92
0.27ct Pink Sapphire, Round, Transparent
3.7 mm
$ 5.66
0.34ct Yellow Sapphire, Oval, VVS-VS
5.6 x 4.1 mm
$ 37.25
2.81ctw Blue Sapphire, Emerald Cut, VS
4.7 x 3.1 mm
$ 123.15
0.60ct Blue Sapphire, Round, VVS-VS
5 mm (calibrated)
$ 404.19
0.79ctw Purple Sapphire, Oval, VS
5 x 4 mm (calibrated)
$ 59.72
0.97ctw Multicolor Sapphire, Square, VS
2.3 x 2.3 mm
$ 115.93
0.32ct Pink Sapphire, Oval, VVS-VS
5.5 x 3.9 mm
$ 31.87
0.90ct Multicolor Sapphire, Cushion, VVS-VS
5.8 x 4.9 mm
$ 71.71
0.49ct Pink Sapphire, Round, Transparent
4.2 mm
$ 13.18
0.37ct Yellow Sapphire, Oval, VVS-VS
6 x 4 mm (calibrated)
$ 33.85
0.64ct Blue Sapphire, Marquise, VVS-VS
8.1 x 4 mm
$ 149.35
3.88ct Black Star Sapphire, Oval, Opaque
9.9 x 7.5 mm
$ 69.56
0.46ct Purple Sapphire, Fancy, VVS
5.8 x 5.7 mm
$ 42.08
0.73ctw Pink Sapphire, Oval, VVS-VS
5.7 x 4 mm
$ 81.32
0.45ct Pink Sapphire, Pear Shape, VVS
5.9 x 4.7 mm
$ 41.17
0.54ct Purple Sapphire, Oval, VS
5.4 x 4.4 mm
$ 82.83
0.64ct Blue Sapphire, Round, VVS-VS
5 mm (calibrated)
$ 431.13
0.64ct Blue Sapphire, Marquise, VVS
7.9 x 3.9 mm
$ 149.35
0.71ct Pink Sapphire, Pear Shape, VS
6 x 4.9 mm
$ 233.36
0.78ctw White Sapphire, Round, VS
4.5 mm (calibrated)
$ 102.88
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Why Buy Sapphire Heat-Only from GemSelect?
- Trusted Worldwide Since 2003
- Supplying natural gemstones to jewelers and collectors in 120+ countries
- Verified natural gemstones
- View All GemSelect Reviews on Bizrate
- Secure checkout and insured worldwide delivery
- 30-day returns and satisfaction guarantee
Heat Only Sapphire Stones
Our heat only sapphire stones are natural gemstones enhanced using traditional heat treatment only, without diffusion or chemical additives, preserving their authenticity and value.
What Does Heat Only Mean?
Heat only sapphires are gemstones that have undergone controlled heating to improve color and clarity. This is the most widely accepted treatment in the gem trade and does not involve foreign elements.
Natural Sapphire Colors
Heat only sapphires are available in a wide range of colors, including blue, pink, yellow, green, and parti-color varieties, offering versatility for all types of jewelry designs.
Heat Only vs Untreated Sapphire
While untreated sapphires are completely natural, heat only sapphires offer improved appearance at a more accessible price point, making them a popular choice for both collectors and jewelry makers.
Loose Sapphires for Custom Jewelry
Choose from a variety of shapes such as oval, round, cushion, and pear. Heat only sapphire gemstones are ideal for rings, earrings, and pendants thanks to their durability and brilliance.
No Diffusion or Filling
All our heat only sapphires are free from diffusion treatment, glass filling, or dyeing. Full disclosure ensures confidence and transparency with every purchase.
Certified Sapphire Gemstones
Many of our heat only sapphire gemstones come with gemological certification verifying treatment status, origin, and quality characteristics.
Wholesale Heat Only Sapphires
We offer competitive pricing for bulk purchases, making our heat only sapphires suitable for jewelers, designers, and gemstone dealers worldwide.
Learn more about sapphire treatments and properties on our Sapphire Information Page.
FAQs
What is a heat only sapphire?
A heat only sapphire is a natural gemstone that has been treated with heat alone to enhance its color and clarity, without any additional chemicals or diffusion processes.
Are heat only sapphires natural?
Yes, heat only sapphires are natural gemstones. Heat treatment is a standard and accepted process in the gemstone industry.
Is heat treatment permanent?
Yes, heat treatment is stable and permanent under normal wear, making it suitable for everyday jewelry.
What is the difference between heat only and diffusion sapphire?
Heat only sapphires are treated using heat alone, while diffusion sapphires involve the introduction of external elements to alter color, which is considered a more invasive treatment.
Are heat only sapphires valuable?
Yes, they are more valuable than heavily treated stones and offer a good balance between natural authenticity and improved appearance.
Can I use heat only sapphires for engagement rings?
Yes, sapphires are durable (Mohs 9) and suitable for engagement rings, especially when properly set and cared for.
GemSelect Certified Store Reviews
GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!
Overall Rating -> 8 
I've purchased things from GemSelect before. What you see is what you get, which is not always the case with gem sites online. You can find some good value with gem select, and I will buy from them again.
Overall Rating -> 10 
GemSelect offers excellent choices, prices & service- highly recommended! Unfortunately, prior to ordering a replacement gemstone, my jeweler neglected to mention it needed to be one that was a'cushion cuta' to fit the existing mount. Have yet to return/exchangea'
Overall Rating -> 10
Wonderful purchase, can't wait to see the stone.
Overall Rating -> 9 
It was great!
Overall Rating -> 10
All items were delivered on time with all items meeting or exceeding my expectations. Cut, clarity and color were very close to the photos and description.
Overall Rating -> 10
I needed a very specific color of tourmaline and Gem Select had it. I had to get the client to agree and then ordered the stone. It arrived better than pictured and we all were very happy.
