M Letter Initial Monogram Diamond Charm Necklace 0.65 Carat Total 18K Gold. Jewelry for everyday should be Symbolic of you and represent you. This M Letter Initial Charm Necklace is perfectly easy to carry but leaves a lasting imaging on your world. Looks like heirloom necklace especially with the stunning diamonds that are plate prong set in a lovely handwritten designer font. Available only in 18K White & Yellow Gold.