Ruby Heat Only Gemstones
Browse certified ruby heat only gemstones with standard heat treatment and no glass filling or diffusion.
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Bi-color
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Black
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Blue
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Brown
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Golden
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Gray
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Green
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Multicolor
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Orange
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Pink
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Purple Ruby Heat Only
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Red Ruby Heat Only
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Turquoise
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Violet
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White
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Yellow
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Single |
Pairs |
Lots |
Faceted |
Cabochons |
2.52ct Reddish Purple Ruby, Fancy, Opaque
11.4 x 7.3 mm
$ 60.48
0.72ct Medium Red Ruby, Round, VS-SI
5.3 mm
$ 555.53
18.39ct Boysenberry Purple Ruby, Fancy, Opaque
32.7 x 20 mm
$ 514.87
0.99ct Reddish Pink Ruby, Pear Shape, VS-SI
7 x 5 mm (calibrated)
$ 978.73
2.81ct Pinkish Purple Star Ruby, Oval, Opaque
7.6 x 7 mm
$ 156.35
0.38ct Medium Red Ruby, Oval, VS
5 x 3.8 mm
$ 127.68
0.42ct Deep Red Ruby, Oval, VS
5.2 x 4 mm
$ 141.12
0.35ct Deep Crimson Ruby, Pear Shape, VS-SI
5 x 4 mm (calibrated)
$ 138.60
11.87ct Plum Purple Star Ruby, Oval, Opaque
14 x 12 mm (calibrated)
$ 188.02
0.19ct Medium Dark-Red Ruby, Round, VS
3.5 mm (calibrated)
$ 75.49
10.57ct Medium-Dark Purple Star Ruby, Oval, Opaque
13.7 x 11.1 mm
$ 167.42
0.17ct Pinkish Red Ruby, Round, VS
3.5 mm (calibrated)
$ 67.55
1.10ct Pinkish Red Ruby, Round, VS-SI
5.5 mm (calibrated)
$ 456.60
14.52ct Medium-Dark Purple Star Ruby, Oval, Opaque
14 x 12 mm (calibrated)
$ 229.99
3.19ct Medium Dark-Purple Ruby, Fancy, Opaque
13.7 x 9.5 mm
$ 76.56
11.40ct Medium Purple Star Ruby, Oval, Opaque
13.9 x 11.3 mm
$ 180.58
0.29ct Dark Red Ruby, Round, SI
4 mm (calibrated)
$ 114.84
0.22ct Deep Wine Red Ruby, Round, VS-SI
3.5 mm (calibrated)
$ 87.41
0.20ct Medium Dark-Red Ruby, Round, VS
3.5 mm (calibrated)
$ 79.46
0.32ct Dark Red Ruby, Round, VS-SI
4 mm (calibrated)
$ 138.05
0.35ct Wine Red Ruby, Round, SI
3.8 mm
$ 139.07
1.02ct Medium Red Ruby, Oval, VS-SI
6.7 x 5.2 mm
$ 942.48
5.20ct Deep Purple Red Star Ruby, Oval, Opaque
10.8 x 8 mm
$ 289.33
4.07ct Medium Purple Ruby, Fancy, Opaque
16 x 9.9 mm
$ 97.68
Why Buy Ruby Heat Only from GemSelect?
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- Supplying natural gemstones to jewelers and collectors in 120+ countries
- Verified natural gemstones
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What Is Ruby Heat Only?
Ruby heat only gemstones are natural rubies that have undergone standard heat treatment to improve color and clarity, without any glass filling, beryllium diffusion, or chemical additives. Heat treatment is a widely accepted and permanent enhancement in the ruby trade.
Natural Heated Ruby - No Glass Filling
Our heat only ruby selection contains stones that are not fracture-filled and not diffusion treated. This makes them a preferred choice for buyers seeking traditional, untreated-appearance rubies with full treatment transparency.
Why Choose Heat Only Ruby?
Heat only ruby stones maintain the natural structure of corundum while improving vibrancy and reducing visible inclusions. Compared to heavily treated rubies, they offer stronger long-term value, better durability, and higher market acceptance.
Ruby Heat Treatment Explained
Standard heat treatment involves heating rubies at high temperatures to enhance color and clarity. No foreign materials are introduced, and the treatment is stable and permanent. This differs significantly from glass-filled or diffusion-treated rubies.
Heat Only Ruby for Jewelry
With a Mohs hardness of 9, ruby heat only gemstones are ideal for rings, earrings, pendants, and fine jewelry. Their durability and classic red color make them suitable for daily wear and heirloom designs.
Wholesale Ruby Heat Only Stones
GemSelect offers individual stones and wholesale ruby heat only options for jewelers and collectors. Choose from various shapes, sizes, calibrated stones, and matched pairs with worldwide shipping.
Learn more about ruby properties, treatments, and buying tips on our Ruby Information Page.
FAQs
What does ruby heat only mean?
Ruby heat only means the gemstone has undergone standard heat treatment to enhance color and clarity, with no glass filling, diffusion, or additional chemical treatments.
Is heat only ruby considered natural?
Yes. The ruby itself is 100% natural corundum. Heat treatment is an accepted industry practice and is considered a permanent enhancement when fully disclosed.
How is heat only ruby different from glass-filled ruby?
Glass-filled rubies contain foreign materials to fill fractures, while heat only rubies do not. Heat only stones maintain their natural structure and typically offer better durability and long-term value.
Are ruby heat only stones good for engagement rings?
Yes. With a hardness of 9 on the Mohs scale, heat only rubies are durable enough for engagement rings and everyday jewelry when properly set.
Does heat treatment affect ruby value?
Standard heat treatment is widely accepted in the trade. Heat only rubies generally hold significantly higher value than heavily treated or fracture-filled stones.
GemSelect Certified Store Reviews
GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!
Overall Rating -> 9 
I love wide range of stones. Always have my preference.
Overall Rating -> 10 
It's always a pleasure doing business with Gem Select. Outstanding products ant very reasonable prices. Thank You One and All.
Overall Rating -> 10
I love the gems and your website, every time I want to buy I usually spend between 6 and 8 hours on your website.
Overall Rating -> 10
I could see the actual gem I was buying
Overall Rating -> 10
When I need a specific stone, gem select is my go to shop. Always a good experience and a great product.
Overall Rating -> 10
Had a great experience and the prices are great
