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Home Gemstones Sapphire Heat-Only

Heat Only Sapphire Gemstones

Browse natural heat only sapphire gemstones, enhanced solely by traditional heat treatment for improved color and clarity.

Sapphire Heat-Only Weight
Sapphire Heat-Only Size
Sapphire Heat-Only Clarity
Sapphire Heat-Only Price
Sapphire Heat-Only Treatment

Size Explained

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For Example: 8-9
Bi-color
Black Sapphire Heat-Only
Blue Sapphire Heat-Only
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Golden Sapphire Heat-Only
Gray Sapphire Heat-Only
Green Sapphire Heat-Only
Multicolor Sapphire Heat-Only
Orange Sapphire Heat-Only
Pink Sapphire Heat-Only
Purple Sapphire Heat-Only
Red Sapphire Heat-Only
Turquoise Sapphire Heat-Only
Violet Sapphire Heat-Only
White Sapphire Heat-Only
Yellow Sapphire Heat-Only
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0.28ct Pink Sapphire, Round, Transparent

3.7 mm

$ 5.91

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0.79ctw White Sapphire, Round, VS

4.5 mm (calibrated)

$ 104.20

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0.71ctw White Sapphire, Round, VS

4.5 mm (calibrated)

$ 93.66

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0.62ct Blue Sapphire, Round, VVS

5 mm (calibrated)

$ 417.66

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15.48ct Black Star Sapphire, Oval, Opaque

13.9 x 13.4 mm

$ 200.44

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1.16ctw Purple Sapphire, Oval, VS

6.2 x 4.2 mm

$ 112.83

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0.64ctw Purple Sapphire, Oval, VS

5 x 4 mm (calibrated)

$ 61.29

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0.78ctw White Sapphire, Round, VS

4.5 mm (calibrated)

$ 102.88

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0.85ct Blue Sapphire, Cushion, VS

5.6 x 4.5 mm

$ 67.73

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4.63ct Black Star Sapphire, Oval, Opaque

10.2 x 8.5 mm

$ 83.01

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0.75ctw Purple Sapphire, Oval, VS

5 x 4 mm (calibrated)

$ 72.96

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1.64ctw Pink Sapphire, Emerald Cut, VS

2.8 x 2.8 mm

$ 88.54

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1.67ct Yellow Sapphire, Oval, VS-SI

8 x 6 mm (calibrated)

$ 70.35

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0.73ct Blue Sapphire, Cushion, VS

5.7 x 4.5 mm

$ 87.25

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1.68ct White Sapphire, Oval, VS

7.6 x 6.3 mm

$ 669.31

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0.75ct Pink Sapphire, Fancy, VVS-VS

7.3 x 5 mm

$ 83.57

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0.58ct Purple Sapphire, Oval, VVS-VS

6.1 x 4.2 mm

$ 69.32

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0.74ct Blue Sapphire, Cushion, VS

5 x 4 mm (calibrated)

$ 88.44

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1.60ctw White Sapphire, Round, VVS-VS

4.3 mm

$ 211.34

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1.96ctw Blue Sapphire, Briolette, VS

5.2 x 3.2 mm

$ 205.97

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0.71ct Blue Sapphire, Round, VVS

5 mm (calibrated)

$ 422.64

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0.75ct Green Sapphire, Cushion, VVS-VS

4.7 x 4.7 mm

$ 59.76

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3.16ct Black Star Sapphire, Oval, Opaque

9.5 x 6.9 mm

$ 56.66

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0.58ct Green Sapphire, Cushion, VS-SI

5 x 5 mm (calibrated)

$ 46.21

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Why Buy Sapphire Heat-Only from GemSelect?

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.

Loose Heat Only Sapphire Gemstones for Jewelry

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 star ratings

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.

Posted By Tim W in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

the selection is good as are the prices

Posted By Old man in August, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

The purchasing process is fairly quick and straightforward and for me user friendly so it probably took more or less than 3 minutes to purchase and pay for the items. I wish there was a discount offer for multiple items to encourage us buyers to purchase more an incentive and add more sales in your end. Besides that, it's been a great purchasing experience and will continue to shop as I am a repeat customer and have bought from your store many times before. Thank you.

Posted By Emmanuel in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

My whole experience is great.

Posted By Ghs in November, 2025
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Overall Rating -> 10 star ratings

It was great

Posted By Nik in June, 2026
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Overall Rating -> 10 star ratings

Very good.

Posted By Tommy in December, 2025
Source: Bizrate
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