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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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 |
1.30ctw White Sapphire, Round, VS
4.2 mm
$ 206.88
0.81ct Blue Sapphire, Marquise, VVS-VS
8 x 4.1 mm
$ 213.84
4.23ct Black Star Sapphire, Oval, Opaque
9.4 x 7.9 mm
$ 91.37
0.59ct Blue Sapphire, Cushion, VS
5.2 x 4.1 mm
$ 84.96
0.75ct Yellow Sapphire, Oval, VVS-VS
6.1 x 5 mm
$ 86.44
1.26ctw Blue Sapphire, Round, VS
5 mm (calibrated)
$ 498.96
0.41ct Pink Sapphire, Oval, VS
6 x 4 mm (calibrated)
$ 49.20
1.53ctw White Sapphire, Round, VS
4.3 mm
$ 221.35
0.47ct Pink Sapphire, Oval, VVS
6 x 4 mm (calibrated)
$ 56.77
0.76ct Purple Sapphire, Round, VVS-VS
5.5 mm (calibrated)
$ 266.00
1.42ctw White Sapphire, Square, VS
2.2 x 2.1 mm
$ 112.46
0.65ctw White Sapphire, Round, VVS-VS
4.3 mm
$ 103.44
0.47ct Violet Sapphire, Pear Shape, VS
5.5 x 4.2 mm
$ 62.04
1.60ctw Pink Sapphire, Trillion, VS
4 x 4 mm (calibrated)
$ 159.43
0.44ct Pink Sapphire, Oval, VVS
6 x 4 mm (calibrated)
$ 49.99
0.46ct White Sapphire, Round, VS
4.5 mm (calibrated)
$ 73.10
0.82ct Blue Sapphire, Cushion, VVS-VS
5.7 x 4.5 mm
$ 78.72
0.69ct Blue Sapphire, Marquise, VVS-VS
8.3 x 4.2 mm
$ 194.00
0.91ct Multicolor Sapphire, Cushion, VS-SI
5 x 5 mm (calibrated)
$ 87.36
4.08ct Black Star Sapphire, Oval, Opaque
10 x 8 mm (calibrated)
$ 73.44
0.89ct Green Sapphire, Pear Shape, VS
7 x 5 mm (calibrated)
$ 85.44
0.97ctw Purple Sapphire, Oval, VS
6 x 4 mm (calibrated)
$ 110.22
0.83ctw White Sapphire, Round, VVS-VS
4.5 mm (calibrated)
$ 131.89
0.56ct Blue Sapphire, Round, VVS-VS
5 mm (calibrated)
$ 454.50
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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 -> 10 
Absolutely love the website, selection and products. Can you guys add a gemstones with inclusions tab. I like those it'd be nice to have them all in one place but i do understand it would be alot of work to go through and categorize them. Thank you anyways
Overall Rating -> 10
My experience has always been fantastic. Today I saved 6 gems to email a customer looking for a particular color blend to fit into an east west setting, so her options were limited, but we found one she wanted, deleted all the others in the cart and order the gem she selected. It was helpful to be able to put them in the cart so I could save them until she selected the one she wanted without having to research all of them again.
Overall Rating -> 10
This is the first time I have used this site. I was dissatisfied with the quality of gems and supplies elsewhere and decided to try GemSelect. They are awesome! I was thrilled to see the variety and the great web performance. There was the ability to search for information as well as gems. Things like the clarity rating system and caret weight of the gems. I have always loved making things and I have just started to make jewelry as a business. However I have never made a ring before and have always wanted to. On GemSelect I was able to find good quality gems to use in my creations. I am so glad the website is so easy to use. Thank you GemSelect.
Overall Rating -> 9 
Plan on purchasing on an ongoing basis. So far.....so good....
Overall Rating -> 10
Gem Select has a user friendly website and the product is very good as is the price. The gems are described accurately and I always get what I think I'm getting.
Overall Rating -> 10
Love, and have always loved, your website.
