Untreated Sapphire

Experience a fine selection of natural untreated sapphire gemstones for sale. We stock this rare gemstone in various shapes, colors and sizes. Unheated sapphires are mainly collector gemstones but are also used in jewelry by people who focus on 100% natural gemstones without any enhancement whatsoever. We offer gemstone certification from professional gemstone labs for all our online items. We can ship our unheated sapphires with standard or express shipping services worldwide.

Selected Gemstones

Gemstones A-Z

Actinolite Cat's Eye 59 Agate 812 Agate Geode 19 Almandine Garnet 35 Amazonite 213 Amethyst 3,119 Amethyst Geode Slice 80 Ametrine 206 Ammolite 452 Andalusite 204 Andesine Labradorite 149 Apatite 564 Aquamarine 91 Aventurine 132 Azotic Topaz 13 Azurite 21 Black Opal 330 Bloodstone 254 Boulder Opal 217 Carnelian 91 Cat's Eye Apatite 39 Cat's Eye Aquamarine 18 Cat's Eye Gemstones 1,112 Cat's Eye Moonstone 67 Cat's Eye Opal 168 Cat's Eye Scapolite 97 Chalcedony 124 Charoite 166 Chocolate Opal 75 Chrome Diopside 1 Chrysoberyl 100 Chrysoberyl Cat's Eye 178 Chrysocolla 63 Chrysoprase 33 Citrine 4,242 Color Change Gemstones 840 Color-Change Diaspore 721 Color-Change Fluorite 59 Color-Change Garnet 60 Coral 293 Demantoid Garnet 248 Dendritic Agate 236 Diamond 697 Druzy Amethyst 5 Druzy Azurite 21 Druzy Citrine 51 Druzy Variscite 132 Emerald 880 Enstatite 5 Fire Agate 338 Fire Opal 169 Fluorite 205 Fossil Coral 330 Garnet 5,848 Golden Beryl 184 Grandidierite 186 Grossularite Garnet 50 Hawk's Eye 1 Hematite 372 Hemimorphite 46 Hemimorphite Druzy 46 Hessonite Garnet 2,250 Hiddenite 17 Howlite 142 Idocrase 27 Imperial Topaz 12 Iolite 171 Jade Gemstones 319 Jadeite 319 Jasper 1,362 Kornerupine 244 Kunzite 439 Kyanite 689 Labradorite 653 Lapis Lazuli 346 Larimar 156 Lepidolite 49 Malachite 245 Malaya Garnet 149 Mali Garnet 12 Maw-Sit-Sit 132 Moonstone 948 Morganite 887 Moss Agate 69 Mother Of Pearl 102 Mystic Quartz 408 Mystic Topaz 28 Nuummite 121 Obsidian 248 Onyx 288 Opal 1,226 Opal Doublet 5 Opal In Matrix 20 Peanut Wood 15 Pearl 19 Peridot 1,375 Pietersite 641 Prehnite 837 Psilomelane Dendrite 25 Pyrite 16 Pyrope Garnet 1,854 Quartz 1,323 Quartz Cat's Eye 85 Quartz With Hedenbergite 9 Quartz With Marcasite 190 Rainbow Moonstone 624 Rainbow Pyrite 183 Rhodochrosite 159 Rhodolite Garnet 458 Rhodonite 38 Rose Quartz 748 Rubellite Tourmaline 12 Ruby 1,254 Ruby In Fuchsite 93 Ruby-Zoisite 220 Rutile Quartz 540 Sapphire 5,132 Scapolite 97 Scolecite 34 Seraphinite 50 Serpentine 80 Sillimanite 73 Sillimanite Cat's Eye 401 Smithsonite 1 Smoky Quartz 1,069 Snowflake Obsidian 35 Sodalite 35 Spectrolite 147 Spessartite Garnet 382 Sphalerite 360 Sphene 506 Spinel 959 Star Diopside 8 Star Garnet 50 Star Gemstones 847 Star Moonstone 98 Star Rose Quartz 18 Star Ruby 257 Star Sapphire 413 Star Sunstone 3 Strawberry Quartz 951 Sunstone 503 Tanzanite 838 Tiger's Eye 861 Tiger's Eye Matrix 167 Topaz 4,600 Tourmaline 2,388 Tsavorite Garnet 240 Turquoise 97 Uvarovite Garnet Drusy 60 Variscite 8 Zircon 2,063

Bi-color

Black

Blue

Brown

Golden

Gray Untreated Sapphire

Green

Multicolor

Orange

Pink

Purple

Red

Turquoise

Violet

White

Yellow

Untreated Sapphire Single

Untreated Sapphire Pairs

Untreated Sapphire Lots

Untreated Sapphire Faceted

Untreated Sapphire Cabochons

Sort By:

Clear All

Photos are of Actual Products for Sale

8.8 ct Gray Star Sapphire, 10.6 mm Round Cut From Myanmar

Natural Star Sapphire, Qty: 1 pc | 8.80 carat weight Star Sapphire

8.80ct1 Piece

$ 308.00

10.6 mm

Item Description
Stone Type:	Loose Star Sapphire
Star Sapphire Weight:	8.80 ct Star Sapphire
Star Sapphire Shape:	Round Cabochon Star Sapphire
Star Sapphire Size:	10.6 mm Star Sapphire
Star Sapphire Color:	Very Light Grey Star Sapphire
Star Sapphire Clarity:	Opaque Star Sapphire
Star Sapphire Origin:	Myanmar Star Sapphire
Star Sapphire Treatment:	Untreated
Star Sapphire Quantity:	1
Star Sapphire Certificate:	GemSelect
Product Description:

View Details

Add to Cart

8.96 ct Gray Star Sapphire, 10.5 mm Round Cut From Myanmar

Natural Star Sapphire, Qty: 1 pc | 8.96 carat weight Star Sapphire

8.96ct1 Piece

$ 313.60

10.5 mm

Item Description
Stone Type:	Loose Star Sapphire
Star Sapphire Weight:	8.96 ct Star Sapphire
Star Sapphire Shape:	Round Cabochon Star Sapphire
Star Sapphire Size:	10.5 mm Star Sapphire
Star Sapphire Color:	Medium Grey Star Sapphire
Star Sapphire Clarity:	Opaque Star Sapphire
Star Sapphire Origin:	Myanmar Star Sapphire
Star Sapphire Treatment:	Untreated
Star Sapphire Quantity:	1
Star Sapphire Certificate:	GemSelect
Product Description:

View Details

Add to Cart

9.28 ct Gray Star Sapphire, 11.7 mm Round Cut From Myanmar

Natural Star Sapphire, Qty: 1 pc | 9.28 carat weight Star Sapphire

9.28ct1 Piece

$ 357.28

11.7 mm

Item Description
Stone Type:	Loose Star Sapphire
Star Sapphire Weight:	9.28 ct Star Sapphire
Star Sapphire Shape:	Round Cabochon Star Sapphire
Star Sapphire Size:	11.7 mm Star Sapphire
Star Sapphire Color:	Grey Star Sapphire
Star Sapphire Clarity:	Opaque Star Sapphire
Star Sapphire Origin:	Myanmar Star Sapphire
Star Sapphire Treatment:	Untreated
Star Sapphire Quantity:	1
Star Sapphire Certificate:	GemSelect
Product Description:

View Details

Add to Cart

10.97 ct Gray Star Sapphire, 11.5 mm Round Cut From Myanmar

Natural Star Sapphire, Qty: 1 pc | 10.97 carat weight Star Sapphire

10.97ct1 Piece

$ 422.35

11.5 mm

Item Description
Stone Type:	Loose Star Sapphire
Star Sapphire Weight:	10.97 ct Star Sapphire
Star Sapphire Shape:	Round Cabochon Star Sapphire
Star Sapphire Size:	11.5 mm Star Sapphire
Star Sapphire Color:	Light Grey Star Sapphire
Star Sapphire Clarity:	Opaque Star Sapphire
Star Sapphire Origin:	Myanmar Star Sapphire
Star Sapphire Treatment:	Untreated
Star Sapphire Quantity:	1
Star Sapphire Certificate:	GemSelect
Product Description:

View Details

Add to Cart

21.23 ct Gray Star Sapphire, 14.7 mm Round Cut From Myanmar

Natural Star Sapphire, Qty: 1 pc | 21.23 carat weight Star Sapphire

21.23ct1 Piece

$ 817.36

14.7 mm

Item Description
Stone Type:	Loose Star Sapphire
Star Sapphire Weight:	21.23 ct Star Sapphire
Star Sapphire Shape:	Round Cabochon Star Sapphire
Star Sapphire Size:	14.7 mm Star Sapphire
Star Sapphire Color:	Light Grey Star Sapphire
Star Sapphire Clarity:	Opaque Star Sapphire
Star Sapphire Origin:	Myanmar Star Sapphire
Star Sapphire Treatment:	Untreated
Star Sapphire Quantity:	1
Star Sapphire Certificate:	GemSelect
Product Description:

View Details

Add to Cart

This Page in Other Languages

What is an untreated Sapphire?

An untreated sapphire is one that has not undergone any enhancing process other than the skilled cutting and polishing into the gorgeous gemstones we know and love.

Sapphires are a form of the mineral, corundum, just like the ruby, the only difference is that rubies are red and sapphires are every other color.

It is estimated that at least 90% of all sapphires on sale today have received some sort of treatment to boost their appearance. The most common form of treatment is heat which can dramatically improve the color and clarity of a sapphire. Heat treatment has been a traditional process for at least a 1000 years and is totally accepted in the gemstone market.

There are other types of treatment used to improve the appearance of sapphires including beryllium diffusion, surface diffusion and fissure filling.

Are untreated sapphires expensive?

Untreated sapphires are exceptionally rare and highly sought after so they are generally more expensive than treated sapphires. Of course, they are still subject to the usual price factors such as color, size, clarity and so on.

An untreated vivid blue sapphire with a slight violet undertone and a velvety look would be a very valuable item indeed with a price tag sure to exceed $10,000 per carat. Untreated sapphires are also available in other colors and while not as expensive as top grade blue examples, do tend to be more expensive than heated stones.

Untreated Sapphire Colors

Just like treated sapphires, untreated sapphires can be found in a variety of colors and the general rule is that if all other factors such as cut, clarity and size are equal then the untreated sapphire will demand a much higher price.

With untreated sapphires, any color other than blue or colorless is known as a 'fancy sapphire'. The exception to this rule is red, in which case it is a Ruby.

How can you tell if a Sapphire is untreated?

Without sophisticated laboratory equipment it is very difficult to determine whether or not a sapphire has been treated. If you are going to spend the amount of money needed to buy an untreated sapphire then we would highly recommend getting a full gemstone certification to ensure that no treatment has taken place.

Certain sizes, shapes and colors of untreated sapphires are to be found at very affordable prices which may not warrant the money spent on certification. In this case we would suggest making sure you buy the gemstone from a reputable seller.

Why choose an untreated sapphire?

The decision to choose an untreated sapphire over a treated one is a personal preference. If you are a purist with an appreciation of Mother Nature in its most unaffected state you may feel drawn towards an untreated stone.

Or if you are looking at a gemstone as an investment that will increase in value, then the exceedingly rare untreated option brings a potentially higher ROI opportunity.

Some feel that the spiritual influence of a gemstone is much greater with a totally natural untreated gemstone.

There is no doubt that untreated sapphires are one of the world's rarest treasures - add to this their incredible beauty and you have something very special.

What size are Untreated Sapphire Gemstones?

Any sapphire which weighs more than a carat or two is very rare and very expensive. Finding an untreated sapphire of a significant size is even more difficult so expect to pay quite a premium and as they increase in size the price per carat jumps dramatically.

What kind of jewelry is Untreated Sapphire suitable for?

Untreated sapphires are rated at a very impressive 9 on Mohs hardness scale which is second only to diamonds. This means it can be used in all types of jewelry items including daily wear pieces.

If you are investing in such a rare and beautiful gemstone it would make sense to have it placed in an exquisite custom designed setting such as a ring or pendant.

The stunning 12 carat blue sapphire engagement ring worn by both Princess Diana and Catherine has made it a very popular choice for engaged couples.

Large untreated sapphires are particularly hard to come by but smaller gemstones are slightly more readily available so multi-stone designs are an option such as bracelets, necklaces and brooches or used as side stones and accent stones.

Where are Untreated Sapphires found?

Sri Lanka, Myanmar and Thailand have been traditional sources of untreated sapphires for centuries and Tanzania, Mozambique and Madagascar in Africa have developed into a major supplier in more recent times. Montana in the USA and Inverell in Eastern Australia are also famous for their untreated sapphires but are difficult to find.

Birthstones and Anniversaries

Untreated Sapphires are birthstones for September and the traditional gemstone gift for the 5th and 45th wedding anniversary, giving you two opportunities to buy one for the love of your life.

Read All

Gemstone Information

Over 19 Years in the Gemstone Business!

Thank you for trusting us with your purchase!

Overall Rating -> 9

Never bought anything on this website before, but it probably won't be my last purchase. Definitely one of the easiest to use and most informative sites I've ever been to.

Posted By Bob in November, 2023

Source: Bizrate

Overall Rating -> 10

Very easy. I have purchased a few times before and was satisfied each time. Thank you.

Posted By Ray in December, 2023

Source: Bizrate

Overall Rating -> 10

Todo muy bien en la compra ahora esperar recibir el pedido.

Posted By MAGSMX in August, 2023

Source: Bizrate

Overall Rating -> 10

Excellent experience!

Posted By Steph in April, 2023

Source: Bizrate

Overall Rating -> 8

I am currently pleased. I like the layout of the website.

Posted By RayPoppa in January, 2024

Source: Bizrate

Overall Rating -> 10

I FOUND WHAT I WANT IT

Posted By GABY in March, 2024

Source: Bizrate

Overall Rating -> 10

Very large selection of items and we used the stones to have several pieces of jewelry made for us.

Posted By Joe in January, 2024

Source: Bizrate

Overall Rating -> 10

Found what I was looking for

Posted By Rian in June, 2023

Source: Bizrate

Overall Rating -> 10

Excellent selection of products. Website easy to navigate and make purchases.

Posted By David in April, 2023

Source: Bizrate

Overall Rating -> 10

My first order. I am anxious to see if what I ordered is what I receive.

Posted By KRJ in July, 2023

Source: Bizrate

Overall Rating -> 10

I particularly like information about product provided with purchase.

Posted By Dick in May, 2023

Source: Bizrate

Overall Rating -> 7

I placed order#384714 based on the picture on your website and the stone came in much darker. I'm sure it's the same stone i ordered but your lighting made it seem a lighter blue. I was trying to match a stone for a customer and based on the picture it would have been close enough but the stone in person is a mile off.

Posted By Bobk in February, 2024

Source: Bizrate

Overall Rating -> 10

Everthing about researching and ordering from Gemselect was easy and uncomplicated. In the past I had payment problems, but your customer rep, Thomas, helped me get everything right. I will continue using Gemselet in the future for these reasons.

Posted By WildwillyfromArizona in August, 2023

Source: Bizrate

Overall Rating -> 10

Easy to use website, made it very easy to buy. Will shop here again.

Posted By Bjorn in January, 2024

Source: Bizrate

Overall Rating -> 10

Everything fine.

Posted By Hilario in December, 2023

Source: Bizrate