T & C Sapphire &Diamond Ring I have a sapphire and diamond ring stamped T & C with the trademark symbol after it. number 9 stamp inside band I recently inherited a large diamond ring with 5 large diamonds on a gold band. Inside the gold band is stamped / engraved the letter S with a. What do other symbols stamped on jewelry mean? Other than the 925 jewelry stamp the other key stamp is the makers mark. From upper left clockwise. GDJ inside a diamond symbol represents Grieve Diamond Jewellers of Hastings, NZ. The circled R represents Regal Castings Ltd of Auckland. This is definitely a maker's mark - a unique symbol which is used to identify a jeweler's work or a jewelry company's product. Finding out who the maker's mark belongs too though could take quite awhile. A jeweler's maker's mark does not need to be registered in the United States by law, although most jeweler's register their maker's mark with.
2022. 5. 31. · This stamp means that the piece contains at least 14K of pure gold per 24 parts, no less. 14K 585, or simply “585.”. This stamp refers to the amount of gold in the alloy per 1,000 units. 14K gold contains 58.3% pure gold, or 583 grams per thousand, and as such uses a “585” stamp to show its purity. Most modern jewelry will include at least two marks which are engraved, stamped or applied by laser. The first mark will define the material fineness or purity. Examples of gold purity marks include 18k, 750 and 585. Examples of silver purity marks include 925, STERLING, STG and STER. The purity mark is sometimes called a Hallmark. 2020. 10. 30. · Platinum is usually stamped with the abbreviation PLAT or PT. Gold-filled jewelry is covered with a layer of at least 10-karat gold, and it's often stamped with G.F. or R.G.F. G.E. stands for Gold Electroplate. Pure gold is 24 karats, and it's stamped with 999 or 24k. 20-karat gold is stamped with 833 for its 20 to 24 or .833 gold to alloy ratio.