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What Our Customers Are Saying

5 stars

"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."

5 stars

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

5 stars

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

Unheated - 19.18 ct Natural Earth Mined Blue Aquamarine – ALGT Certificate
Lovely 2.02CRTs Certified Natural Sapphire Gemstone.
GIA Certified 14.05 ct AAAA Octagon (16 x 11 mm) Natural D'Block Tanzanite
9.32 ct AIG Certified Oval Cut(14x11mm) Un-Heated Reddish Orange Tourmaline
19.90 CT 9000usd Premium Gem Brazil Natural Indicolite Tourmaline
COLOUR CHANGE SAPPHIRE - 3.11 ct -RARE
22.44 CTS Natural Purple Tanzanite .Well Octagon Unheated Gem
Lotus Certified Vivid Red Spinel Natural 15.45Ct Top Quality Spinel
Lotus Certified Intense Red Spinel Natural 6.27Ct Top Quality Spinel
Lotus Certified Intense Red Spinel 7.79Ct Top Quality Spinel Tanzania
Beautiful 7.05 Cts Sea Blue Colour Natural Tourmaline
1.49 Cts Natural Green Demantoid Garnet Round Shape GR9780 - M
GIA Certified 15.62 CTs Top Beautiful Paraiba Tourmaline Gems
38.90ct green tourmaline from jabba mine Afghanistan
Presenting 7.00Ct Lovely Collection Of Vibrant Blue Zircon Perfect Pair
2.58 ct - Vivid Green EMERALD - ZAMBIA
GIA 0.71 Carat Natural White Diamond Emerald Cut
4.46 CTS LIGHT STEEL BLUE STAR SAPPHIRE 100% NATURAL UNHEATED BURMESE MINE
Certified Sunset Vivid Orange Pink 2.46 Ct Padparadscha Natural Sapphire
AIG Certified Rare Lavander Jadeite 12.31 ct Untreated Burma Mined

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Milestones

Why Choose Gem Rock Auctions

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.

FAQs

Everything you need to know about buying genuine gemstones and jewellery on our marketplace.

Where can I find genuine gemstones for sale online?

You can explore thousands of verified gemstones for sale right here on our marketplace. We connect buyers directly with trusted sellers from around the world, including Thailand, Sri Lanka, Australia and the USA. Every listing includes detailed descriptions, multiple photos and authenticity verification, so you can confidently buy gemstones online with complete transparency.

How do I know the gemstone I buy is genuine?

We take authenticity seriously. All sellers on our platform are part of our Verified Seller Program, which ensures that only natural, earth-mined gemstones are listed. In addition, our Gemstone Sheriff Program allows you to request an independent audit by a qualified gemologist. This guarantees that item descriptions and images are accurate and that you always receive what you paid for.

Can I buy gemstones directly from miners or cutters?

Yes! Our marketplace connects you directly with gemstone miners and cutters from around the world. This gives you access to rough and polished stones as well as rare finds like sapphire, ruby, emerald and spinel sourced straight from the mine. It’s one of the most exciting and direct ways to buy gemstones while supporting small-scale miners and artisans.

Do you sell ready-made gemstone jewellery?

Absolutely. You can discover a stunning range of handcrafted gemstone jewellery, including rings, pendants, earrings and necklaces. Each piece highlights the natural brilliance of the gem and is made by skilled jewellers from around the world.

What should I consider when buying gemstone jewellery?

When choosing gemstone jewellery, consider the type of stone, colour, cut, setting and metal type. Some gems, like sapphires and rubies, are ideal for daily wear due to their hardness, while softer gems such as opal or tanzanite require more care. Always check product photos, read the description carefully and buy from a verified seller to ensure quality and authenticity.

Are custom gemstone jewellery pieces available?

Yes, some sellers offer custom design services. You can contact them directly through their listings to discuss a bespoke design or modification. Whether you want to set your gemstone into a gold pendant or design a matching pair of earrings, you can collaborate with expert jewellers to create something unique.

How do I buy a gemstone on this website?

Buying is simple. Once you’ve found the gemstone you love, click “Place Bid” to join an auction or “Add To Cart” to purchase immediately. You’ll need to register for an account and verify your payment details before bidding. This ensures every bid placed is legitimate and keeps the marketplace secure.

What payment methods are accepted?

All Verified Sellers accept one or more of the following methods: GemPay, Credit Card or PayPal. GemPay is our preferred payment method, it’s secure, transparent and fast. Payments must be completed within three days of an auction being won or an offer being accepted. During checkout, you can select your shipping provider, add optional insurance and confirm tax details.

Do you offer international shipping for gemstones?

Yes. Our sellers ship worldwide, and you’ll see the exact postage cost listed on each auction page. Rates vary depending on the seller’s location and the shipping carrier used. For peace of mind, we highly recommend adding postal insurance to protect your order against loss or damage. Tariff or duty fees may apply depending on your country’s import laws.

What is the return policy if I’m not happy with my gemstone?

All sellers on our site offer a seven-day return policy when you buy gemstones or gemstone jewellery. If you’re not 100% satisfied with your purchase, you may return the product for a refund. Items must be in original condition with all boxes, packaging and documentation. Buyers are responsible for return shipping costs, and we strongly recommend using insured postage with proof of delivery. Sellers are not authorised to charge restocking fees.