Designer Hallmark Database
This page is a work in progress consisting of a small sampling of hallmarks that I have personally viewed, pictured and authenticated to the best of my abilities. I plan to add many more hallmarks collected over the years and detailed commentary as time permits. If anyone has any corrections or additional information to add, please feel free to email me directly at firstname.lastname@example.org. Your educated participation is always welcome and your patience is appreciated.
Jewelry Exchange of Delaware, Inc.
Jewelry Exchange of Delaware, Inc.
This Beautiful ring made by Cartier in the 70's has a block script "CARTIER" hallmark that differs from the more common cursive "Cartier" hallmark better known today. Never the less this piece also has an individual piece number indicative of all Cartier jewelry here clearly visible as "12183". There is also a stamp of "1972" indicating the year of production as well as "18k" indication the purity of the Gold used.
This is another example of an older Cartier hallmark. This one is easy to miss and hidden well. The piece is a simple gold star pin / brooch. Very unassuming at first. On the back it has a noticeable "18k" stamp indicating the purity of the Gold used. After seeing this, many would just assume that this is a nice 18k Star Pin. Upon closer inspection, you will notice a number faintly stamped above, then you know to look further as the number is an indication that this may be a Cartier piece. The number "22402" is a Cartier individual piece number and as you make your way around the piece you find a tiny "CARTIER" stamp on the side of one of the edges of the star.
This is an example of Cartier's more modern "cursive" hallmark. This simple 18kt Rose Gold band is hallmarked "Cartier", "(c)" for Copy-write, "AU750" indicating the purity of the Gold used (750 is the European standard indicating 18kt or 75% pure Gold). As with all Cartier Jewelry, there is an individual piece number "57 BOS832". Additionally there are less known marks including the Standard mark and Sponsor's hallmark that indicate that the piece has been legally found to contain the marked fineness of metal and which goldsmith attested to the fineness of the metal used. These hallmarks all seem to be laser etched rather than stamped.
Mikimoto is the originator of the Cultured Pearl and thus has been the name in designer Cultured Pearl Jewelry for over 100 years. Their Hallmark is simply an "M" in a clam shell accompanied by a mark indicating the fineness of the metal in the clasp used. The example below is marked "750"(750 is the European standard indicating 18kt or 75% pure Gold)
Tiffany & Co.
Over the years, I have found that Tiffany & Co. above all others has the most variations in hallmarking.
This Tiffany & Co. Band is a good example of a modern Tiffany Hallmark. Inside the band is stamped "(c)" for Copy-Write, "1997" for the year of design, "Tiffany & Co.", and "750" (750 is the European standard indicating 18kt or 75% pure Gold).
This Tiffany & Co. piece is a good example of a hallmark that has some wear. You can still make out the "(c)" for copy-write, "1983" for the year of the design, "Tiffany & Co.", and "Paloma Picasso" which is the name of the designer. This is very typical with modern Tiffany &Co. Jewelry as they are know to commission and collaborate with several different designers and all of their individual works are signed accordingly.
Below is a later Paloma Picasso designed Tiffany & Co. piece that shows 3 different hallmark stamps. The first stamp contains the copy-write "(c)", the year "1998" and "Tiffany & Co." all in one stamp. Then there is a second stamp of "18k" indicating the fineness and type of the metal used. Finally there is a third stamp "Paloma Picasso" which is the signature of the designer.
Here is a an example of Tiffany & Co. Wheat Link bracelet that has a simple yet poorly struck "Tiffany & Co." Hallmark stamp which was common of the time period. On the inner tab of the clasp there is also a "585" hallmark stamp (585 is the European standard indicating 14kt or 58.5% pure Gold).