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What Our Customers Are Saying

"My 'Go-To' website for gemstones of all prices. Sellers are verified and if you have any questions they have a service to check what you're thinking about buying."

"I have been purchasing from GemRock Auctions for over 5 yrs. I have purchased around 700 gems for my collection."

"Such a great variety. I found a sapphire I couldn't find anywhere else!"

3.28 Cts Amazing Beautiful Perfect Shape Natural White Sapphire
COBALT TONE 5.60 CTS WELL CUSHION PEACOCK BLUE SPINEL, UNHEATED GEM PIECE.
103cts Huge Orthoclase Checkerboard-Cut
Certified Ruby 1.05 ct No-Heat Red Color Clean Gem Grade Mozambique SKU 3
5.45 Cts Pleasant Hi-End-Sparkling-Rare-Genuine-Natural-Orange-Tourmaline!
AIG Certified 5.09 ct Bluish Green Color Sapphire No Heat Madagascar Mined
2.12ct Certified VVS UNHEATED Greenish Blue Sapphire 8.78 x 6.93 mm
1.22 CT SAPPHIRE UNHEATED PEACOCK BLUE WEL CUT RAREST 99% CLEAN NATURAL
7.13 Carats Bi-Color Tourmaline Pair from Pakistan Loose Gemstone
Big Size Garnet 49.70 Ct Top Color Natural Reddish Color Spessartite
10 CTS ALEXANDRITE ROUGH PARCEL RG-4246 raregems
2.01 Ct. Blue Sapphire | Mined in Madagascar | Certified by GRS & Lotus
Vivd Blue Sapphire 1.89Ct No Heat Top Quality Sapphire
2.20 CTS VIVID PARTI SAPPHIRE -AUSTRALIA
Certified Padparadscha Sapphire 3.73Ct Natural Orange Pink Sapphire
GRS Certified Thailand Blue Sapphire, 2.54 Carats, Dark Blue Oval
4.90 Carats Natural Tourmaline Mismatched Pair
Green Color Emerald 4.74CT Natural Top Quality Cut Gemstone From Panjshir
Presenting Rare Piece of rabani Mine Pink 122 Carat Kunzite
6.54 carat Natural Spinel Reverse Pair Beautiful Pieces

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Marketplace Milestones

Why Choose Gem Rock Auctions for Your Gemstone Needs

Welcome to Gem Rock Auctions, your ultimate destination for discovering and acquiring an exquisite array of loose gemstones, gemstone rough, mineral specimens, and a diverse range of birthstones including diamonds, sapphires, and rubies. At the heart of our service lies a commitment to bring you closer to the beauty and diversity of gemstones from around the globe.

As a leading global online marketplace, Gem Rock Auctions prides itself on hosting a network of verified sellers. Each seller is rigorously vetted to ensure they meet our high standards of authenticity and quality. This means that every gemstone available through our platform is not only genuine but also adheres to the highest standards of quality.

Our mission extends beyond merely being a marketplace; we are your guide in the vibrant world of gemstones. Through our comprehensive Gemstone Encyclopedia, we empower you to make informed decisions by providing insights and expert advice on what to look for when purchasing gemstones. This educational approach ensures that your journey into the world of gemstones is both enjoyable and enlightening.

At Gem Rock Auctions, we are dedicated to ensuring the integrity and quality of your gemstone purchases. Our platform is more than just a place to buy gemstones; it's a space where the beauty and rarity of gemstones are celebrated and made accessible to you, no matter where you are in the world. Join us in exploring the treasures that lie within the earth and find your perfect gemstone, sourced from the finest locales across the globe.

All sellers on Gem Rock Auctions must comply with our Verified Sellers program which ensures a high degree of industry knowledge, consistent refund policy and pricing.

The Gemstone Sheriff program allows our members to request an audit on any item, which is completed by an independent Gemologist who assesses the accuracy of the item description and pictures.