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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

Choose Size or Size Range
For Example: 6-7
For Example: 8-9
Bi-color
Black Sapphire Heat-Only
Blue Sapphire Heat-Only
Brown
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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0.11ct Purple Sapphire, Round, VS

2.9 mm (calibrated)

$ 186.00

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1.53ctw White Sapphire, Round, VS

4.5 mm (calibrated)

$ 214.84

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0.34ct Purple Sapphire, Oval, VS

6 x 4 mm (calibrated)

$ 40.80

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2.02ct Yellow Sapphire, Oval, VS-SI

8 x 6 mm (calibrated)

$ 102.53

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0.84ct Blue Sapphire, Cushion, VVS

5.9 x 4.9 mm

$ 120.96

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0.60ct Blue Sapphire, Round, VS

5 mm (calibrated)

$ 486.97

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1.55ctw White Sapphire, Round, VVS-VS

4.5 mm (calibrated)

$ 246.67

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0.52ct Pink Sapphire, Oval, VVS

6 x 4.2 mm

$ 62.40

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0.63ct Blue Sapphire, Round, VVS

5 mm (calibrated)

$ 451.82

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5.17ct Black Star Sapphire, Oval, Opaque

10 x 8 mm (calibrated)

$ 111.67

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0.55ct Purple Sapphire, Oval, VVS-VS

6 x 3.8 mm

$ 79.20

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0.48ct Pink Sapphire, Oval, VVS

6.6 x 4.9 mm

$ 52.91

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0.67ct Purple Sapphire, Oval, VS

5.6 x 4.6 mm

$ 73.03

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0.61ct Pink Sapphire, Oval, VVS-VS

6.7 x 4.9 mm

$ 81.96

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0.73ct Pink Sapphire, Oval, VS

6.1 x 5.1 mm

$ 262.80

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2.54ctw Multicolor Sapphire, Briolette, VS

3.6 x 3.6 mm

$ 100.58

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0.64ct Blue Sapphire, Round, VS

5 mm (calibrated)

$ 458.99

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0.70ct Multicolor Sapphire, Cushion, VVS-VS

5.5 x 4.5 mm

$ 67.20

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3.12ct Yellow Sapphire, Oval, VS

9 x 7 mm (calibrated)

$ 936.00

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3.93ctw Pink Sapphire, Pear Shape, VVS-VS

5 x 3 mm (calibrated)

$ 307.01

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0.30ct Purple Sapphire, Oval, VVS-VS

6 x 4 mm (calibrated)

$ 36.00

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0.72ctw Purple Sapphire, Oval, VS

4.8 x 3.9 mm

$ 65.58

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0.33ct Pink Sapphire, Fancy, VS

6.7 x 3.9 mm

$ 39.60

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0.65ct Purple Sapphire, Oval, VVS-VS

6.3 x 4.6 mm

$ 102.96

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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 can pick and choose from large selection and find just what I need for .y projects, currently my cane.

Posted By Darkstar731 in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Easy picking, fast checkout, secure shipping. Cana't ask for anything more than efficiency and a good price.

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

My experience was done with ease

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

Good selection prices are reasonable!

Posted By ToRa62 in April, 2026
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Overall Rating -> 10 star ratings

Love the precise descriptions and calibrations of hte loose gemstones. Would like to have seen more variety in the size gem I was looking for.

Posted By RenoRose in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I always purchase my stones from GemSelect, their products are high quality and customer service is always great. I also like the fact that I am able to purchase unique items

Posted By Desperaux in November, 2025
Source: Bizrate
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