Posted 4 years ago
I believe the stone on this lovely Taxco, Mexico bracelet is Chrysocolla or azurite which is found in California and Mexico. It's not cracked - natural seam shows up in photo. The bracelet was made by Sigi Pineda (circa 1955) It's marked 277 w/Hecho en Mexico and Sterling stamps - plus a round "eagle or logo" stamp and Sigi Taxco. It has a security catch on clasp. Stone measures 1-1/2" square.
From what I read Sigi Pineda produced lots of sterling and stone jewelry.
I researched this particular bracelet about 5 years ago and found a black onyx for $375. just last year I found a red/black example. I bought this in 1995 at San Diego consignment shop for $30.00.
Welzebub thank you for your updated information about the marks.