Victorian Gold Engraved Seal Opening Locket Cufflinks

An extremely unusual pair of beautifully made locket cufflinks, circa 1860. Each face opens out, making four lockets in total. They are in 18 caratThe unit of weight for a diamond or other gemstone and also for a pearl. Abbreviated ‘ct’, 1 carat is equal to 0.2 grams. In reference to gold, a unit of purity or fineness of gold and gold alloy, expressed as a number out of 24 parts by weight, e.g. ’24 carat’ signifies pure gold, ’18 carat’ 18/24th gold in the alloy, et cetera.  Also abbreviated as ‘c… yellow gold and a good weight.