Vintage Jewelry Experts
Sell vintage jewelry in Chicago. Decatique Studios buys Trifari, Eisenberg, costume & fine jewelry. 40+ years expertise. Free appraisals, consignment & direct buyouts.
Where heritage meets heart
For nearly four decades, we've dedicated our lives to the art of discovering hidden treasures. What started as a passion for collecting in the 1980s has grown into Chicago's most trusted source for vintage jewelry and collectibles.
We're not just dealers–we're experts. We specialize in signed costume jewelry from the golden age: Trifari, Eisenberg, Coro, Hobe, Miriam Haskell, and dozens of other designers. We know the marks, the makers, and the market.
"They take their job seriously, they sweat over every object and detail, and they are honest.
Whether you're selling a single piece or an entire collection, we offer consignment, direct buyouts, and free appraisals. With 11,000+ items sold on eBay and a 99.7% positive rating, your treasures are in expert hands.
Ivan & Diane Bilic
Nearly 40 years of combined expertise
From vintage costume jewelry to fine jewelry, gold, silver, and coins — we buy it all with fair, transparent pricing.
That 'old pin' from grandma's jewelry box? It might be a valuable Trifari. We specialize in identifying signed costume jewelry from the 1920s–1970s.
Estate jewelry deserves expert eyes. We buy engagement rings, Rolex watches, and heirloom pieces with appraisals that reflect true market value.
Skip the pawn shop. We pay based on daily market rates plus collectible value—not just melt weight.
Inherited a coin collection? We evaluate everything from Morgan dollars to gold bullion, explaining what makes each piece valuable.
From your first call to payment, we make selling your jewelry straightforward and stress-free.
Call or send photos. We'll discuss your collection and schedule a convenient home visit at no cost.
Ivan & Diane personally assess each piece, researching maker marks and current market values.
Choose immediate payment or consign for potentially higher returns through our eBay store.
Families who trusted us with their most treasured possessions.
A mere review is inadequate to describe the remarkable accomplishments of Decatique. Ivan and Diane brought professionalism, expertise, and genuine care to what could have been an overwhelming process. They exceeded every expectation.
Less than one week after the 3-day sale was over, he provided a check and detailed accounting, while also cleaning out the house. The entire process was smooth, professional, and far exceeded our expectations.
The team demonstrated great care and respect for our mother's vast collections. They handled a four-floor house filled with books and antiques with professionalism and expertise.
I 100% would put them up against any other team and without a doubt know they would be better! Their knowledge, attention to detail, and genuine care made all the difference.
98% of the contents of the house was addressed. Their thoroughness was remarkable – they found value in items we would have simply discarded.
Ivan is the best. In the Chicagoland area when it comes to finding a trustworthy estate sale company, there are few as smart as Ivan and Diane.
Hidden Treasures
Recent discoveries from Chicago-area estates. These pieces were nearly thrown away—until we looked closer.
Found in a box marked "donate," this 1880s mourning brooch was nearly given away. We identified genuine 14K gold with Celtic knot border craftsmanship.
Found in a "donate" box • Sold for $1,200
The family called it "junk jewelry." We identified it as a signed Weiss piece from the 1950s—valuable to collectors who know what to look for.
Called "junk jewelry" • Sold for $425
Inherited without provenance. Our gemologist identified genuine Baltic amber with gold filigree work—worth 20x what the family expected.
Thought it was glass • Sold for $680
Part of a 400-piece estate collection. This signed Weiss choker was one of several designer pieces hidden among costume jewelry.
From 400-piece estate • Sold for $295
Marked "silver" — turned out to be sterling with genuine opal center. A $520 surprise found in a $5 jewelry lot.
Found in $5 lot • Sold for $520
In its original box, untouched for 80 years. Genuine garnet stones and seed pearls the family assumed were costume.
In original box • Sold for $780
Browse 1,000+ verified vintage jewelry pieces, coins, and collectibles. Every item is professionally photographed, authenticated, and backed by our 40 years of expertise.
We specialize in signed vintage costume jewelry: Trifari, Eisenberg, Coro, Hobe, Miriam Haskell, Weiss, Kramer, and more. We also buy Victorian, Art Deco, and bakelite pieces, sterling silver, and select fine jewelry.
No, unlike many competitors, Decatique Studios does not charge setup fees. Our commission is only earned when items sell.
We serve the Greater Chicago metropolitan area, including the North Shore (Evanston, Wilmette), Northwest Side, and surrounding suburbs.
We only take on one or two clients at a time, ensuring your collection gets our undivided attention. With 40 years of combined experience and 11,000+ items sold, we identify hidden value others miss.
Our expertise includes signed costume jewelry (Trifari, Eisenberg, Coro), fine jewelry and gold, vintage collectibles, antique furniture, art, and mid-century modern pieces.
Yes! We offer buyout services for entire collections or individual pieces. We also offer consignment through our eBay store for items that may benefit from targeted online exposure.
We photograph, research, and list your items on our eBay store. When items sell, you receive your share. With 11,000+ items sold and a 99.7% positive rating, your pieces are in expert hands.
Call us at (773) 719-0508 or email [email protected]. You can also send photos of items you're curious about. We offer free, no-obligation consultations.
Contact us for a free, no-obligation evaluation. We serve Chicago and the entire North Shore.
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