Untreated Gems

The gemstone at the centre of this opal ring is an Australian black opal with a strong dominant red, the rarest and most desirable of all colours in Australian opals. It is a natural...

The origin of the gemstone is Eastern Africa. Red and Pink untreated gems are becoming rare and hence this is definitely an "investment gemstone"!

The origin of the gemstone is Madagascar. Red untreated gems are becoming rare and hence this is definitely an "investment gemstone"!

What sets it apart is its natural, untreated quality, preserving the gem's pure characteristics as created by nature.

Excellent condition, the necklace has been restrung with silk for safe wear and best presentation Further Details Below Metal: 18 Kt white gold Hallmarks: assay Gems: 43 natural un...

The 4.26 carat antique-cut sapphire stands out for its untreated cornflower blue color. The gem is a miracle of nature – perfectly shaped by an expert gemcutter.

Ring Information Center Gem: ~ Natural untreated Rhodolite Garnet ~ Gemstone Size: 5.2 mm ~ Round Cut ~ GIA Color & Clarity : medium-light Purple-Red , Type I (Eye Clean) ~ Gemstone...

I love the Fengguan's sensual sway and mysterious drape over the eyes: it’s sexy and powerful all at once.” – Alexia Connellan The Gems: The untreated spessartite garnets in the stu...

This 1960 ca stunner is a classy must of the Italian high end jewellery Coral jewellery has enchanted the world from centuries, the endless appeal of Coral is sought after and collec...

Excellent condition, 11.3 grams in weight Further Details Below Metal: 18 Kt yellow gold and platinum, tested Hallmarks: none/worn Gems: 10 natural untreated Persian turquoise of 6...

The ring weighs 16.8 grams It measures 17 mm. at the widest point It can be re-sized Further Details Below Metal: 18 Kt yellow gold Hallmarks: assay Gems: 1 natural untreated caboc...

Unheated Pink Purple Sapphire 0.47ct Oval Cut Loose Untreated Gem 5 x 3.8mm Natural Untreated Pinkish Purple Sapphire. 0.47 Carat sapphire with a beautiful pink purple colour and a...

1.46ct Unheated Blue Green Yellow Sapphire Oval Cut IGI Certified Untreated Gem Bluish Yellowish Green Untreated Sapphire In IGI Blister. 1.46 Carat with an excellent oval cut and ...

1.45ct AIG Certified Green Blue Sapphire Oval Cut Rare Untreated Gem No Heat AIG Certified Blue Green Untreated Sapphire Gemstone. 1.45 Carat sapphire with a beautiful blue green co...

Natural Untreated Green Australian Sapphire Gemstone. 1.12 Carat with a beautiful vivid green colour and good clarity, a clean stone with only some small natural inclusions visible ...

Rare and exclusive 5.05 carat Burmese Red Spinel cushion cut gem. This pristine, collection quality, untreated gem, is offered loose and would make an exceptional, unisex, custom mad...

Handmade custom cut bright blue Lapis cufflinks with untreated gem blue Lapis. Wave design. Secure clips and solid 18k yellow gold. 18k yellow gold 2 fancy bright blue wave cut Lapi...

Zircon is not to be confused with "cubic zirconia", which is a synthetic gem. This is a natural and untreated gem of a lovely avocado green.

Natural Untreated Green Sapphire Gemstone. 0.71 carat stone with a beautiful green colour and good clarity, a clean stone with only some small natural inclusions visible when lookin...

GIA Certified 1.46Ct Untreated 'Lagoon' Blue Green Sapphire Cushion Cut Gem Natural GIA Certified Untreated Blue Green Sapphire Gemstone. 1.46 Carat unheated sapphire with a beautif...

Fine Natural Untreated Australian Green Sapphire Gemstone. 1.12 Carat with a beautiful yellow green colour and an excellent emerald octagon cut. Also has very good clarity, a very c...

Fine Royal Blue Untreated Australian Sapphire Gemstone. 0.83 Carat with a beautiful royal blue colour and very good clarity. Very clean stone with only some small natural inclusions...

Rare Natural Untreated Colour Change Sapphire. 1.21 Carat with an excellent triangle trillion cut. This sapphire changes colour depending on the light its viewed in. Very rare for ...

GIA Certified Untreated Yellow Sapphire Gemstone. 1.04 Carat unheated sapphire with a beautiful vivid yellow colour. Fully certified by GIA confirming stone as natural and untreated...

Natural GIA CERTIFIED Colour Change Sapphire 1.00ct UNTREATED Oval Cut RARE Gem GIA Certified Rare Untreated Colour Change Blue Green - Purple Sapphire Gemstone. 1.00 Carat unheated...

Fully certified by IGI in Antwerp, one of their best and most well equipped gem labs. Confirming stone as natural and untreated.

Natural Fancy Orange loose diamond. 0.15 carat. Untreated stone with rare and natural Fancy orange colour.

Fully certified by IGI in Antwerp, one of the best and most well equipped gem labs. This stone is totally untreated and unheated which is very rare for sapphires.

Fully certified by IGI in Antwerp, one of the best and most well equipped gem labs. Totally untreated and unheated, very rare for sapphires.

Natural untreated light blue Sapphire. 1.21 carat stone with a good pear cut. Fully certified by GIA. This stone is totally untreated and unheated which is very rare for blue sapp...

Fine Untreated Greenish Blue Sapphire Gemstone. Fine quality unheated sapphire with a beautiful and unique greenish blue colour. Fully certified by GIA confirming stone as natural a...

Rare Untreated Colour Change Sapphire Gemstone. 1.18 Carat unheated sapphire with a rare colour change effect. Changing colour depending on the light its viewed in. Very rare for na...

Rare Untreated Colour Change Sapphire Gemstone. 1.01 Carat unheated sapphire with a rare colour change effect. Changing colour depending on the light its viewed in. Very rare for na...

Rare Untreated Bi Colour Sapphire Gemstone. 1.37 Carat unheated sapphire with a rare bi colour effect. Showing blue and yellow green colours with a unique colour variation. Very rar...

Rare Untreated Bi Colour Sapphire Gemstone. 1.79 Carat unheated sapphire with a rare bi colour effect. Showing blue and yellow colours with a unique colour split. Very rare and stun...

Deep Greenish Blue ‘Teal’ Sapphire Gemstone. Fine quality unheated sapphire with a beautiful and unique deep greenish blue ‘teal’ colour. Fully certified by GIA confirming stone as...

NATURAL UNHEATED Ruby GIA CERTIFIED Deep Red 0.67ct Heart Cut Untreated RARE Gem GIA Certified Natural Untreated Deep Red Ruby. 0.67 Carat unheated deep red ruby.

The stone's deep red hue is both rich and intense, reminiscent of the most coveted rubies, yet with its own distinct sparkle. As a natural, untreated gem, it retains its authentic be...

1.49ct Deep Blue GIA Certified Untreated Sapphire Pear Cut No Heat Rare Gem Untreated GIA Certified Blue Sapphire Gemstone. 1.49 Carat unheated sapphire with a deep dark blue colour.

Deep Royal Blue Untreated Oval Cut Sapphire IGI Certified 0.63ct Loose Rare Gem Natural Deep Royal Blue Untreated Sapphire In IGI Blister. 0.63 Carat with an excellent oval cut and ...

Fully certified by IGI in Antwerp, one of the best and most well equipped gem labs. This stone is totally untreated and unheated which is very rare for rubies.

Fine quality blue Sapphire with a beautiful and unique teal deep blue colour. Described by GIA as straight ‘blue’ but as photos show, has slight ‘teal’ hues. Very pretty and unique....

Natural A Grade Jadeite Gemstone. 4.51 Carat with an excellent oval cabochon cut. Fully certified by AIG. Totally untreated Jadeite jade, referred to as ‘A’ grade in the trade. Min...

Sourced from Ceylon’s historic deposits, renowned for producing some of the world’s finest sapphires, this untreated gem stands as a testament to nature’s artistry and authenticity.

Untreated 0.57ct Vivid Green Sapphire Pear Teardrop Cut Gem 5.8 x 4mm Natural Vivid Green Australian Sapphire Gemstone. 0.57 Carat with a beautiful vivid green colour and excellent...

The centerpiece is an awe-inspiring 62.60-carat square cushion pyramidal cabochon sapphire, with rich, lively blue hues reflecting the stone’s incredible depth and vibrancy. This unt...

Fine Australian Blue Purple Sapphire Untreated 0.53ct Cushion Cut Gem 4.5x4.2mm Natural Fine Blue Purple Untreated Australian Sapphire Gemstone. 0.53 Carat with a beautiful vivid b...

Fine 1.02ct Green Untreated Australian Sapphire Octagon Cut 6.4x4.8mm Loose Gem Fine Natural Untreated Australian Vivid Green Sapphire Gemstone. 1.02 Carat with a beautiful vivid g...

Fine 0.74ct Vivid Green Untreated Sapphire Australian Cushion Cut Gem 5 x 4.6mm Fine Natural Untreated Vivid Green Sapphire Gemstone. 0.74 Carat with a beautiful vivid green colour...

Fine 1.12ct Green Untreated Australian Sapphire Octagon Cut 6.3 x 4.2mm Loose Gem Fine Natural Untreated Australian Green Sapphire Gemstone. 1.12 Carat with a beautiful yellow gree...

Fine Yellow Australian 0.84ct Untreated Sapphire Pear Teardrop Cut Gem 6.5 x 5mm Fine Natural Untreated Yellow Australian Sapphire Gemstone. 0.84 Carat with a beautiful vivid yello...

Vivid Yellow Untreated Australian Sapphire 0.49ct Pear Cut 6.4 x 4.3mm Loose Gem Natural Australian Yellow Sapphire Gemstone. 0.49 Carat with a beautiful vivid yellow colour and an...

Fine Australian 0.67ct Untreated Vivid Yellow Sapphire Emerald Cut Gem 5.3x3.6mm Fine Natural Yellow Australian Sapphire Gemstone. 0.67 Carat with a beautiful vivid yellow colour a...

A rare and meaningful 4.54 carat oval ruby and diamond three stone ring by Merkaba Jewelry Beverly Hills, crafted in platinum and 18K yellow gold. Centered by a vivid oval ruby accom...

Antique 18Kt rose Gold and silver Ruby and Diamond ring. The cluster style ring is centered with a stunning oval natural emerald, accented by an halo of sparkling old mine cut diamon...

Bochic “Orient” Vintage Natural Diamond & Fire Opal Ring Set In 18K Gold & Silver Natural Fire Opal - 9.50 Carat Natural Round Brilliant Cut Diamonds 2.00 Carat This Ring...

Please check out the HD video! This is an important and substantial piece! 6 pieces of top gem quality opals make up this large pendant. Here is a natural Mexican fire opal and diamo...

Stylish antique Victorian Burma ruby & diamond navette ring (circa 1880s to 1900s) crafted in 18 karat yellow gold. Three Burma rubies total an estimated 0.90 carats. Old mine cut ...

Paraiba blue apatite 14k gold ring. Oval Apatite Engagement Ring with Diamonds on sides. Natural Blue Apatite Ring. Paraiba color Apatite Ring Metal: 14k solid gold Weight: 2.1 g (...

GIA certified 17.91 carat Old Cushion Cut Diamond Solitaire Ring in Platinum Old Cushion Diamond Ring features a Center Cushion Brilliant Cut Diamond with beautiful vintage carving ...

Nice German cluster Emeralds and Diamonds Ring. Plain band and shoulders. Openwork crown in White Gold 16mm x 12.6mm x 6.9mm deep. All stones with open backs. Claw set natural oval c...

Vintage Ring in solid 18K Yellow Gold and Platinum decorated with 19 natural Blue Sapphire stones and 2 Diamonds . Vintage ring , hand - made in Europe ca 1950s -1960s, band hallm...

This fabulous antique Edwardian period Diamond & Pearl ring is the epitome of eternal elegance Dated 1910 circa, hand crafted of solid 18 Kt gold platinum topped Floret daisy shape i...

4.50 Carats Exquisite Natural Aquamarine and Diamond 14K Solid Yellow Gold Ring Total Natural Aquamarine Weight is: 3.50 Carats Aquamarine Measures: 11.09 x 9mm Natural Round Diam...

We are loving this beautiful pastel blue sapphire!!! She has a certificate from GIA stating Sri Lanka Origin & No Treatments. Finding a beautiful, natural, untreated is quite rare an...