Bizak & Co. · Miami · Since 1996

The Estate Jewelry Collection

Every piece we sell is estate — previously owned, one of very few, and examined by a gemologist before it is listed. This page is the full catalogue: what is available right now, what each piece is, and what it costs.

Family Jewelers Since 1996Gemologist-VerifiedInsured Shipping

What You Are Looking At

This is not a catalogue of models you can order in a size and a colour. Estate jewelry arrives one piece at a time — from collections, from families, from the trade — and when a piece sells it is gone. Most of what you see below is one of one: the same ring will not come back next season.

That is the trade-off, and it is the reason people buy estate. You give up the ability to choose from a row of identical items. In exchange you get hand work that is no longer made at this price, stones that were cut before anyone optimised for a grading report, and no new-retail markup on top. If the difference between estate, vintage and antique is new to you, start with what is estate jewelry.

Everything here is examined and tested in Miami before it is photographed. Metals are tested against their hallmarks, stones are checked under the loupe and the microscope, signatures on designer pieces are compared to known work, and anything that has been repaired, replaced or re-cut is disclosed in the listing. Our founder trained at HRD Antwerp (the Antwerp World Diamond Centre) and at the ERIJ Foundation in antique jewelry. The full process is on the authenticity page.

Prices below are the listed asking prices. Several pieces are marked or best offer, and there is a Make an Offer button on every product page. Pieces that sell come off the site.

Rings

Cocktail, signed, coloured stone and signet — platinum, 18K and 14K.

$24,500

5.18ct Unheated Ceylon Sapphire Ring

GIA-certified Sri Lankan sapphire, no indications of heating, violetish blue oval in a double diamond halo. GIA report 2205065975. View details →

$12,000

Salavetti Coral & Turquoise Ring

Signed Salavetti cocktail ring — carved turquoise flower, coral cabochon and a pavé diamond dome in 18k rose gold. View details →

$8,000

Emerald & Diamond Ballerina Ring

Emerald-cut emerald framed by a ballerina halo of baguette and round diamonds in yellow gold. View details →

$5,000

Blue Topaz & Diamond Halo Ring, 18K

Oval blue topaz of approximately 11 ct inside an approximately 2 ct diamond halo, 18k white gold. View details →

$4,250

Platinum Opal & Diamond Ring

5.08ct opal cabochon with green and orange play-of-colour and 0.31ct of diamonds, in platinum. Size 6. View details →

$2,995

Men’s Diamond Greek Key Signet Ring

14k white gold signet, 18.8 g, approximately 2 ct of pavé-set natural diamonds around a carved Greek key motif. View details →

Buying a ring to propose with? Read vintage and estate engagement rings first — it covers old cuts, resizing limits and the seven checks that matter.

Bracelets & Bangles

Tennis lines, signed statement work and solid gold bangles.

$32,500 or best offer

David Webb Coral & Diamond Bracelet

Signed David Webb — carved natural coral with pavé diamond bands in 18k gold (750), 118.9 g. View details →

$7,900

14K Diamond Tennis Bracelet, 7.5ct

7.5ct of natural diamonds in solid 14K yellow gold, 36 grams — baguette clusters, round brilliant halos, box clasp. View details →

$6,500 or best offer

Men’s Baguette Diamond Tennis Bracelet

8.97 ct of baguette and round diamonds in solid 14k yellow gold (585), 25.3 grams, 19 cm. View details →

$2,395

18K Gold Screw-Motif Hinged Bangle

Solid 18k yellow gold hinged bangle, 14.5 g, screw motif, box clasp with safety catch. View details →

Earrings

$5,000

Diamond Feather Drop Earrings, 18K

18k gold feather drops with approximately 3 ct of natural VS-clarity diamonds along cascading chevron ribs. View details →

Watches

Swiss automatics, solid gold and steel — with the papers where they exist.

$5,500 or best offer

Baume & Mercier Clifton 18K Rose Gold

Solid 18k rose gold, Swiss automatic, ref. M0A10059, chocolate dial, with box and guarantee card from 2013. View details →

$1,450

Baume & Mercier Automatic Chronograph

Swiss automatic chronograph in stainless steel — silver guilloché dial, date, leather strap, original box. View details →

More on how we buy and check timepieces: vintage and pre-owned watches.

What Drives the Price of an Estate Piece

Five things decide almost the whole number.

FactorWhat it meansHow much it moves the price
The main stoneSize, colour, clarity, cut — and for coloured stones, whether it has been treatedUsually the largest single share
The signatureA maker such as David Webb or Salavetti, correctly signed and matching known workCan multiply the value of an otherwise similar piece
Metal and weightPlatinum, 18K or 14K, and how many grams of it there areSets the floor — the piece is never worth less than this
ConditionWorn prongs, replaced stones, re-cut shanks, refinished surfacesMoves the price both ways, and must be disclosed
Rarity of the designHow often a piece like it actually comes to marketSmall effect on common designs, large on scarce ones

Want the same logic applied to something you already own? That is a different question with four different answers — see how much is my jewelry worth, or order a written appraisal.

How to Buy

Fastest

Ask on WhatsApp

Send the piece you are looking at and ask anything — more photographs, weight, measurements, condition. You get a person, not a chatbot: +1 786 907 8883.

Negotiable

Make an Offer

Every product page has a Make an Offer button, and several pieces are listed as or best offer. A serious offer gets a straight answer, not a sales sequence.

In person

Private Appointment

We see clients by appointment in Miami, at the Seybold Building in the downtown diamond district. The case holds more than what is listed online.

Not in Miami? Pieces ship fully insured by FedEx, with the shipment covered by a jewelers policy through IFS. If nothing here is right, join the private sourcing list and tell us what you are hunting for — a lot of what we find never reaches the public listings.

Read Before You Buy

Frequently Asked Questions

Is everything in the collection one of a kind?

Almost always, yes. Estate pieces come in one at a time, so what you see is usually the only one we have. When a piece sells it comes off the site rather than being restocked.

Can I see a piece in person before buying?

Yes, by appointment in Miami at the Seybold Building. We do not take walk-ins. Message us on WhatsApp and we will arrange a time and confirm the meeting details with you directly.

How do I know a signed piece is genuine?

Every piece is examined before it is listed: metals tested against their hallmarks, stones checked under magnification, and signatures compared with known work from that maker. Anything replaced or repaired is disclosed in the listing.

Do you negotiate on price?

On many pieces, yes — several are listed as or best offer, and every product page has a Make an Offer button. Pieces priced close to their material and stone value have less room to move.

How is a piece shipped and is it insured?

Pieces ship by FedEx, fully insured, with the shipment covered by a jewelers policy through IFS. Nothing is sent uninsured, whatever the value.

Can I get an appraisal for the piece I buy?

Yes. We write independent appraisals for insurance and estate purposes, and can prepare one for a piece you buy from us. Pricing and turnaround are on the appraisals page.

What if you do not have what I am looking for?

Tell us. We source to order through the Miami trade and our own network, and members of the private sourcing list see those pieces before they are listed publicly.

Seen Something You Like?

Ask us anything about a piece before you commit — weight, condition, extra photographs, or what it is honestly worth.