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Does anyone know about a mark JM on a 14 kt ring? - The ...

    https://community.ebay.com/t5/Archive-Fine-Jewelry-Gems/Does-anyone-know-about-a-mark-JM-on-a-14-kt-ring/td-p/1336552
    Jul 12, 2010 · According to my trademark book, the plain initials JM was used by Jamms Inc., Jerry Madison Jewelry, and J. Mourad Co.Estimated Reading Time: 3 mins

Jm Jewelry Etsy

    https://www.etsy.com/market/jm_jewelry
    Peter Pan Metal Stamped Quote Cuff Bracelet - Second Star to the right and straight on 'til morning - JM Barre, literary jewelry ABookwormCreates 5 out of 5 stars (315)

A guide to what jewelry stamps and what they mean – Think ...

    https://thinkengraved.com/blogs/news/a-guide-to-what-jewelry-stamps-mean
    Apr 29, 2021 · For gold, the stamps are 375, 585, 750, 916, 990 and 999. For silver, the stamps are 800,925,958 and 999. For platinum, the stamps are 850, 900, 950 and 999. Please refer to the photo to see what the stamps look like as well as the essay’s office stamp. That covers the most common stamps on gold jewelry. There may be some other variations or ...Estimated Reading Time: 7 mins

Jm sterling Etsy

    https://www.etsy.com/market/jm_sterling
    Native American Green Turquoise Sterling Silver Ring, Navajo Jewelry, James Mason, Marked JM, Rings Size 7. zephyrvintage. 5 out of 5 stars. (1,734) $75.00 FREE shipping. Favorite. Add to.

Guide to Stamps and Inscriptions on Gold Jewelry

    https://www.raregoldjewelry.com/guide-stamps-inscriptions-gold-jewelry
    Feb 20, 2013 · @Jennifer – Sorry for the delay. The 14K stands for 14 karat which is about 58% pure gold. The “M” stamp could be a couple different jewelers. One of the more notable possibilities would be I. Michelson. Take a look at this website to see some of the possibilities for who the “M” stamp might identify… Jewelry stamps starting with M

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