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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
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Black Sapphire Heat-Only
Blue Sapphire Heat-Only
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Green Sapphire Heat-Only
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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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0.90ct Multicolor Sapphire, Cushion, VVS-VS

5.8 x 4.9 mm

$ 86.40

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0.44ct Yellow Sapphire, Round, VS

4.5 mm (calibrated)

$ 30.62

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1.09ctw Purple Sapphire, Emerald Cut, VS

2.6 x 2.6 mm

$ 43.16

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1.29ct White Sapphire, Pear Shape, VS

7.9 x 5.4 mm

$ 619.20

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0.56ct Blue Sapphire, Cushion, VS

4.5 x 4.5 mm

$ 80.64

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5.50ct Black Star Sapphire, Oval, Opaque

11 x 9 mm (calibrated)

$ 132.00

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0.72ct Blue Sapphire, Marquise, VVS-VS

7.9 x 4.1 mm

$ 202.44

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0.42ct Yellow Sapphire, Round, VS

4.5 mm (calibrated)

$ 29.23

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0.81ctw White Sapphire, Round, VVS-VS

4.5 mm (calibrated)

$ 107.27

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0.66ct Blue Sapphire, Marquise, VVS-VS

8.1 x 4.1 mm

$ 185.57

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0.66ct Blue Sapphire, Round, VS

5 mm (calibrated)

$ 473.34

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1.67ct Yellow Sapphire, Oval, VS-SI

8 x 6 mm (calibrated)

$ 84.76

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0.96ct Blue Sapphire, Marquise, VVS-VS

8.2 x 4.1 mm

$ 253.44

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1.07ctw Blue Sapphire, Round, VS

5 mm (calibrated)

$ 564.96

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1.47ctw White Sapphire, Round, VVS-VS

4.3 mm

$ 233.93

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0.38ct Pink Sapphire, Oval, VVS

5.7 x 4 mm

$ 45.60

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0.40ct Purple Sapphire, Oval, VVS

6 x 4 mm (calibrated)

$ 45.46

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1.18ct Multicolor Sapphire, Cushion, VS-SI

6.7 x 5 mm

$ 141.60

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1.13ct Multicolor Sapphire, Cushion, VS

6.5 x 5.3 mm

$ 122.04

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0.77ct Pink Sapphire, Fancy, VS

6 x 6 mm (calibrated)

$ 103.37

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0.68ct Blue Sapphire, Cushion, VS

4.6 x 4.6 mm

$ 97.92

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7.25ctw Blue Sapphire, Briolette, VS

5.6 x 3.6 mm

$ 127.76

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0.69ct Yellow Sapphire, Oval, VS

7 x 5 mm (calibrated)

$ 84.31

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4.26ctw Pink Sapphire, Pear Shape, VVS-VS

5.2 x 3.3 mm

$ 332.80

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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

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Overall Rating -> 10 star ratings

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Posted By Jhidron in October, 2025
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Overall Rating -> 10 star ratings

Great prices!!! High quality gemstones.

Posted By Ricky in October, 2025
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Overall Rating -> 10 star ratings

Took a chance on purchasing my gemstones from Gemselect and was impressed. 10/10

Posted By KT in September, 2025
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Overall Rating -> 10 star ratings

They have a wonderful selection of gems of all sorts, shapes, cuts, and quality. I am very particular about the quality of stones I buy, and found many with VVS clarity and excellent cut and polish. I am thrilled with each of the stones I purchased, and would definitely recommend GemSelect to everyone.

Posted By Debsarabs in February, 2026
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Overall Rating -> 10 star ratings

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.

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Overall Rating -> 10 star ratings

Great experience. I can't wait to explore on the website further.

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