You are viewing a fine quality pair of 14K yellow gold cufflinks. They measure around the stone 17mm by 13mm or just under 3/4" by 1/2". The swivel bar measures 3/4" long. The gap measures 3/8". They are marked 14K and K.J.. I believe the initials are a maker's mark. The Jade is "untreated" and polished in a cabochon stone. They weigh 10.5 grams in total.