Emmons Black with Stone & Silver Tie-Tack & 1 Cufflink Vintage (#6198) The Balck stone may be Onyx & a Shinestone in the middle. The Cufflink measures approximately ¾ inches in diameter & the tie tack is ½ inch in diameter & is ½ inch wide. I was just going to list the tie tack, but maybe someone needs to match their set, so I included an incomplete set. I have no idea what the material is.  They are in very good condition. Please see pix for complete description.

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