Buy Certified Diamonds at Wholesale Prices
Access the most trusted B2B diamond auction platform for jewelers, retailers, and diamond traders. Bid on GIA certified diamonds, loose stones, and parcel lots from verified suppliers worldwide.
Why Buy Diamonds on All Carats?
The preferred online diamond auction platform for B2B buyers
Wholesale Prices
Access wholesale diamond prices through competitive live auctions. No middleman markups.
Certified Diamonds
Every stone comes with certification details. Buy GIA certified loose diamonds with confidence.
Verified Suppliers
All suppliers are vetted and verified. Trade with trusted diamond wholesalers.
Real-Time Bidding
Live auction updates with auto-bidding feature. Never miss a winning opportunity.
How to Buy Diamonds
Simple steps to start buying on our diamond auction platform
Register Your Account
Create a free account with your business details. Quick verification process.
Browse Live Auctions
Explore certified diamonds with detailed specs, images, and videos. Filter by carat, color, clarity, and more.
Place Your Bids
Bid manually or set auto-bids to compete automatically up to your maximum price.
Win & Complete Purchase
Win the auction and complete the transaction directly with the supplier.
Diamond Categories Available
Find the perfect loose diamonds for your business
Single Stones
Individual certified diamonds perfect for engagement rings, custom jewelry, and high-value pieces. Each stone comes with complete certification and detailed specifications.
- Round, Princess, Oval, Cushion & more shapes
- D-Z color grades available
- FL to I3 clarity options
- GIA, IGI, and other lab certifications
Parcel Lots
Bulk diamond parcels ideal for manufacturers, retailers, and volume buyers. Curated lots with consistent quality and competitive pricing.
- Matched parcels for jewelry production
- Melee diamonds in various sizes
- Bulk quantities at wholesale rates
- Sorted by size, color, and clarity
Ready to Start Buying Diamonds?
Join thousands of jewelers and diamond traders on All Carats