Ring 18K Lapis Lazuli Signet Ring 18K Yellow Gold Signet Ring, Rings A Lapis Lazuli gold signet ring Ring 18K Lapis Lazuli Signet Ring Signet Ring, Rings RRING240978 Lovely Antique Lapis Lazuli Gold Armorial Signet Ring 18k Gold at. An 18 carat gold signet ring set with an oval lapis lazuli stone. This measures 12x9. 5mm and has a carved intaglio seal engraved onto the stone. (These seem to be floral patterns) The ring is hallmarked Birmingham 2011. Good weight of 7 grams. Could be male or female wear. Size L, we can resize free of charge to P, thereafter please enquire.