Ruby Heat Only Gemstones
Browse certified ruby heat only gemstones with standard heat treatment and no glass filling or diffusion.
|
Bi-color
|
Black
|
Blue
|
Brown
|
Golden
|
Gray
|
Green
|
Multicolor
|
Orange
|
Pink
|
Purple Ruby Heat Only
|
Red Ruby Heat Only
|
Turquoise
|
Violet
|
White
|
Yellow
|
Single |
Pairs |
Lots |
Faceted |
Cabochons |
0.53ct Medium Red Ruby, Oval, VS-SI
6 x 4 mm (calibrated)
$ 314.82
0.21ct Medium Dark-Red Ruby, Round, VS
3.5 mm (calibrated)
$ 83.44
0.29ct Pinkish Red Ruby, Round, SI-I1
3.7 mm
$ 115.22
5.73ct Deep Red Ruby, Fancy, Opaque
19.6 x 12.9 mm
$ 137.52
0.29ct Deep Red Ruby, Round, VS-SI
3.8 mm
$ 137.17
3.55ct Purple Red Ruby, Fancy, Opaque
14.6 x 9.4 mm
$ 85.20
0.28ct Medium Red Ruby, Round, SI
4 mm (calibrated)
$ 94.08
0.65ct Dark Red Ruby, Round, VS-SI
5.2 mm
$ 251.83
1.03ct Deep Red Ruby, Oval, VS-SI
7.1 x 5.2 mm
$ 910.96
1.03ct Medium Red Ruby, Oval, VS-SI
7 x 5 mm (calibrated)
$ 951.72
0.21ct Deep Wine Red Ruby, Round, VS-SI
3.5 mm (calibrated)
$ 83.44
0.59ctw Deep Red Rubies, Oval, VS
4.9 x 3.8 mm
$ 198.24
9.59ct Pinkish Red Star Ruby, Oval, Opaque
13 x 9 mm (calibrated)
$ 177.23
17.40ct Grayish Magenta Star Ruby, Oval, Opaque
15 x 12.8 mm
$ 275.62
1.33ct Medium Red Ruby, Oval, VS-SI
7 x 5 mm (calibrated)
$ 1,176.29
0.38ct Deep Red Ruby, Pear Shape, VS-SI
5 x 4 mm (calibrated)
$ 150.48
0.43ct Wine Red Ruby, Round, SI
4 mm (calibrated)
$ 170.28
1.05ct Medium Red Ruby, Round, VS-SI
6 mm (calibrated)
$ 388.08
13.67ct Plum Purple Star Ruby, Oval, Opaque
16.2 x 13.3 mm
$ 216.53
29.19ct Medium Purple Ruby, Pear Shape, Opaque
31.8 x 28.9 mm
$ 817.24
4.90ct Dark Red Ruby, Flower Cut, Opaque
12.2 x 9.6 mm
$ 117.60
0.40ct Medium Red Ruby, Round, SI
4 mm (calibrated)
$ 134.40
0.17ct Medium Red Ruby, Round, VS-SI
3.5 mm (calibrated)
$ 56.29
0.18ct Deep Wine Red Ruby, Round, VS
3.5 mm (calibrated)
$ 71.52
Why Buy Ruby 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
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 -> 10 
Good selection, using for custom jewlery for my wife.
Overall Rating -> 10
I was looking for a site with every type of gem I could want for setting in luxury blades and assumed I would need to look outside the US, but GemSelect made it easy to get everything I wanted without leaving the house! Wide enough selection that I do not feel the need to look elsewhere and pricing the same.
Overall Rating -> 10
Love beauty, color, quality, and price of these gems. Personal projects and will come here soon and everytime.
Overall Rating -> 9 
Nothing bad to report. Everything is as expected. The gems and the price are all very good.
Overall Rating -> 10
I found exactly what I was looking for and ordered it. I like how you give information on the stones I'm buying. Glad I found you!
Overall Rating -> 10
Great selection. Maybe too great i kept adding and deleting stuff because i found better looking ones
