14K Late Victorian Banded Agate Pendant

Late Victorian so-called 'bull's eye' banded agate, approx. 130 carats, is set in 14K gold with a heavy crenellated marquise surround, with black enamel surfaces and later added loops to wear as a pendant.  Measures 1-5/8" x 2" x 1/2". 36 grams.