2M+ REVIEWS | 1000+ NEW GEMS DAILY |
  • Amazing Pair from Madagascar 13.96 ct Imperial Sphene Class Color Spectrum
  • Beautiful top quality 33 plus ct aquamarine top color
  • Deep blue Santa Maria Color natural 29.70 Ct Natural Aquamarine Gemstone
  • Certified 13.05Ct Blue Sapphire No Heat Top Quality Sapphire Srilanka
  • AAA Grade 6.31 ct Tanzanite eye Catching Color
  • 2.17 ct. Natural Ruby IGI Certificate
  • GIA Certified Nigeria Blue Sapphire, 0.54 Carats, Rich Cornflower Blue Oval
  • Zircon Lemon Yellow Color 12.02Ct Lovely Collection Of Sparkly
  • Natural Blue Aquamarine 8.98 Cts VVS Radiant Cut Loose Gemston
  • 7.45 Cts Master Cut High End Quality Natural Santa Maria Blue Aquamarine
  • White Imperial Zircon: 10.41Ct Fascinating Elegant Brilliance -Fiery Beauty
  • 58.69cts Morganite Parcel
  • AIG Sirlanka Royal Blue amazing quality 3.55 Ct Natural Sapphire
  • 2.52 CT SAPPHIRE REAL ROYAL BLUE 100% NATURAL EARTH ONLY HEATED SRI LANKA
  • 2.84 ct AIG Certified AAAA Oval Cut (10 x 8 mm) D'Block Tanzanite Gemstone
  • 3.01 Cts Sri Lanka AAA Grade Vivid Yellow Natural Sapphire Master Cut
  • 1.57 CT SAPPHIRE COLOR CHANGE 100% NATURAL UNHEATED MADAGASCAR
  • Pretty Green - Parti Sapphire - Australia KR521
  • AIG top luster natural Color No Heat 16.94Ct Tanzanite heart catching Color
  • Certified Alexandrite 7.65 ct Untreated Color Change Sri Lanka MinedSKU.12

Explore the World's Premier Gemstone Marketplace

Auction Basics

Once you find an auction listing you're interested in, you're able to place bids against other buyers. Look for the button that says "place bid" and enter the amount you're willing to pay.

If you want to participate in the auctions of our website, you must register and become a member. Provide your contact information and a valid credit card so we can verify that you are a real person.

In this type of auction, buyers bid until the auction ends. Bidding starts at $1, and the seller must sell the item to the highest bidder.

In this type of auction, the seller has a preset bid amount that must be matched or exceeded. When you bid on a reserve price item, you will be notified if you met the reserve price.

There are no buyer's hidden fees. If you win, what you bid is what you pay.

Connect with Fellow Gemstone Enthusiasts

* indicates required

Gemstone Excellence By the Numbers: Our 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.