Untreated Ruby Gemstones
Browse our selection of untreated ruby gemstones with no heat treatment or enhancements, ready for fine jewelry or collecting.
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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
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Red Untreated Ruby
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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 |
2.36ct Red Ruby, Pear Shape, VS-SI
10.9 x 6.7 mm
$ 11,133.44
2.02ct Red Ruby, Cushion, SI
7 x 7 mm (calibrated)
$ 7,507.62
2.00ct Red Ruby, Oval, VS-SI
9 x 7 mm (calibrated)
$ 12,234.65
1.57ct Red Ruby, Emerald Cut, VVS-VS
8 x 5 mm (calibrated)
$ 5,212.40
Why Buy Untreated Ruby 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
Natural Untreated Ruby Stones
Our untreated ruby stones are 100% natural, with no heat treatment or clarity enhancement. These rare gemstones retain their original color and structure, making them highly desirable for collectors and fine jewelry.
Shop Untreated Ruby Online
Buy untreated ruby gemstones online at GemSelect with confidence. Each stone is individually photographed and described, with secure checkout and reliable worldwide shipping to over 100 countries.
Unheated Ruby vs Treated Ruby
Most rubies on the market are heat-treated to enhance color and clarity. Untreated ruby gemstones have not undergone heating, preserving their natural inclusions and original characteristics. Because of their rarity, unheated rubies are often more valuable than treated stones.
Ruby for Engagement Rings & Fine Jewelry
With a Mohs hardness of 9, ruby is one of the most durable gemstones, making untreated ruby suitable for engagement rings, custom rings, pendants, and heirloom jewelry pieces designed to last generations.
Certified & Fully Disclosed Rubies
Transparency is essential when buying high-value gemstones. Any available gemological reports or treatment information is clearly disclosed, ensuring you know exactly what you are purchasing.
Ruby Origin & Color
Untreated ruby gemstones are sourced from renowned deposits including Burma (Myanmar), Mozambique, and Madagascar. Colors range from vivid red to deep pigeon-blood tones, with natural inclusions that confirm authenticity.
Investment-Grade Untreated Ruby
Due to limited supply and increasing demand, untreated ruby gemstones are considered by many collectors to be investment-grade stones, especially in larger carat sizes with strong color and good clarity.
Learn more about ruby properties, origins, and value factors on our Ruby Information Page.
FAQs
What does untreated ruby mean?
An untreated ruby has not been heated or clarity-enhanced. It retains its natural color and internal characteristics exactly as formed in the earth.
Are untreated rubies more valuable?
Yes, untreated rubies are generally rarer than heat-treated stones. When combined with strong color and good clarity, they often command higher prices.
How can I tell if a ruby is unheated?
Determining whether a ruby is unheated typically requires gemological testing. Reputable sellers disclose treatments and may provide certification when available.
Is untreated ruby suitable for daily wear?
Yes. With a hardness of 9 on the Mohs scale, ruby is highly durable and suitable for everyday jewelry such as rings and bracelets.
Do untreated rubies come in different shapes and sizes?
Yes, untreated ruby gemstones are available in a variety of shapes including oval, round, cushion, and pear, as well as a wide range of carat weights.
GemSelect Certified Store Reviews
GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!
Overall Rating -> 9 
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.
Overall Rating -> 10 
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.
Overall Rating -> 10
I've purchased from here many times over the last decade+. I find the information easy to understand, helpful, and interesting. I have always been satisfied that I got exactly what I ordered. Pictures and descriptions are clear and unique to each stone.
Overall Rating -> 8 
It was a good interaction I got a good gemstone for cheap
Overall Rating -> 10
I was looking for high-quality amethyst on this site, and I was able to compare size, color, and weight in detail before making a purchase.
Overall Rating -> 10
I have shopped at Gemselect for nearly 20 years. I especially like that you see pictures of the exact gem you are purchasing. You are a trusted source.
