Each rectangle is a mosaic of opaque, egg yolk and translucent, ethereal genuine amber. Beautifully inlaid and polished smooth. Substantial and appealing design. Marked 925, JK and what looks like a national hallmark that cannot be seen clearly due to the deep impression/misstrike. It has been tested and is guaranteed Sterling. Additional photos have been added to provide every effort in accuracy. 7/8" wide by 7.24 wearable length. Ca., 1960's and is in very good condition. Wears perfectly!