Miami's Diamond District · Nationwide by Mail · Since 1996
Bizak & Co. works from the Seybold Building — the center of Miami's diamond trade — and serves customers across the United States online and by insured mail. Estate jewelry, vintage watches and honest valuations, from a family that has been in this trade for three decades.
The Seybold Building is where Miami's jewelry trade actually happens — one of the largest jewelry centers in the country, hundreds of independent jewelers across ten floors in downtown Miami. It's the difference between a mall counter and the source.
Bizak & Co. is one of those jewelers — a family business, in this trade since 1996. Being inside the district is what lets us offer real estate pieces at trade-level pricing and back every valuation with genuine expertise. And because we work online and by insured mail, you get that access from anywhere in the U.S. — no counter, no pressure, no travel.
One-of-a-kind pieces, honestly described and gemologically examined. Shop and buy online.
Browse the collection →Serviced, authenticated timepieces, priced with full transparency. Shipped insured.
See watches →Mail it in with free insured shipping. Valued piece by piece, paid the same day.
Sell to us →Mail-in jewelry repair by master jewelers, returned fully insured.
Repairs by mail →Browse the collection, or start a sale or repair through the site or WhatsApp — from anywhere.
Selling or repairing? We send a prepaid, fully insured label — you never pay to ship.
A jeweler from the district examines and values every piece, and puts it in writing.
Purchases, offers and repairs handled remotely and shipped insured, both ways.
No. We serve customers across the U.S. online and by insured mail. You can browse and buy estate pieces online, or sell gold, diamonds and watches by mail with free insured shipping — all without traveling.
Yes — a family jeweler based in the Seybold Building since 1996, three generations in the trade. You deal directly with the family, not a middleman.
The Seybold Building is the center of Miami's diamond trade. Buying from a jeweler inside the district means trade-level sourcing and pricing and honest gemological descriptions — and with us you get that from anywhere in the country.
Request a free, insured shipping kit, mail your gold, diamonds or watches, and a gemologist values each piece and sends a written offer. Accept and you're paid the same day; decline and everything ships back free.
It's where our inventory and pricing come from. Being an established jeweler inside the country's largest jewelry center is what lets us offer real estate pieces at trade-level prices online, with the same expertise behind every valuation.
Shop estate pieces, sell by mail, or ask us anything — all online, from anywhere in the country.