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Michael Valitutti marks his jewelry this way. See pic attached.
NG is not a Standard Jewelry Abbreviation and it's possibly a maker's mark particular to New Generation Jewelry of Los Angeles. Jewelry manufacturers and designers use maker’s marks or stamps that feature their logo, initials, trademarks, or company names to specify who made the jewelry. It provides proof that the jewelry item was made by the designer or jewelry maker and is considered "signed". These marks are registered by an Assay Office. 10K indicates the purity of the gold
"The marking ESPO or also found as ESPO-FLEX are the marks of Esposito Jewelry, Inc. a costume jewelry company located in Providence Rhode Island, USA. These marks were first used in 1951." I cut and pasted the above answer from http://www.modernsilver.com/MYSTMARKS.html
9k 9 Karat Gold usually sold in the UK10k10 Karat Gold
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The jewelry mark "FJG" on 14KT 363 jewelry typically indicates the manufacturer or designer's initials, with "14KT" denoting the gold purity (14 karats) and "363" likely representing a specific design or model number. Jewelry marks serve as a way to identify the creator and provide information about the quality and authenticity of the piece. To get precise details about the maker, it may be helpful to consult a jewelry expert or reference specific databases that track such marks.
MJ1 on Italian jewelry typically refers to a specific maker's mark or design number used by a jeweler or manufacturer. Such marks help identify the brand or artisan responsible for the piece, ensuring authenticity and quality. In the context of Italian jewelry, which is known for its craftsmanship and artistry, these marks can also indicate the style or collection to which the jewelry belongs. Always consider consulting an expert for precise identification and valuation.
The AK11 some jewelry stands for Alaska Silver. Other marks such as just an AK sometimes stand for a particular jewelry smith.
417 on jewelry means 10k gold.
Not always the jewelry is stamped, however, no stamp doesnt mean it is not genuine.
Silver Marks A stamping of 925 in silver jewelry means that it is sterling silver and contains 92.5 percent pure silver, with the rest being other
I have a cameo ring that is marked 450, do you know what carat that is?