Vault by Diamond Banc

Vault by Diamond Banc is the wholesale marketplace for approved jewelry and watch dealers. Browse dealer-priced inventory, bid in live auctions, negotiate offers, and check out securely — all from your phone. FOR APPROVED DEALERS ONLY Vault is a business-to-business platform. Apply in the app with your resale credentials, or sign in with your existing Diamond Banc dealer account. Access is limited to verified jewelry industry professionals. LIVE AUCTIONS • Real-time bidding with anti-sniping protection • Alerts when you're outbid and when auctions open or close • Countdown timers, scheduled auctions, and instant results • Set a maximum bid and let the engine bid for you MAKE OFFERS • Submit offers on buy-now inventory • Get accepted, countered, or declined — with an alert either way • Respond to counters in seconds BUY NOW • Pre-owned Rolex and luxury watches, GIA-certified diamonds, and fine estate jewelry at wholesale prices • Detailed photos and video on every listing • Secure checkout tied to your dealer account BUILT FOR THE TRADE • See who listed each item and contact the Diamond Banc team directly • Track your bids, offers, watchlist, and order history • Face ID sign-in • Notification preferences you control ABOUT DIAMOND BANC Diamond Banc's Industry & Dealer Division supplies the jewelry trade with pre-owned luxury watches, certified diamonds, and estate jewelry. Vault is the fastest way for dealers to see what's new and act on it first. A Diamond Banc dealer account is required to buy. No payment is collected in the app at the time of bidding or offering — winning bids and accepted offers are invoiced through standard checkout for physical goods shipped to the dealer. Questions or dealer applications: trade@diamond-banc.com