Huge Hollycraft Opal Glass Moonstone Necklace

Beautiful and dramatic Hollycraft necklace featuring a BIG pendant studded with glass opal or moonstone like stones. Luminous whitish-clear cabochons in textured goldtone, marked on back of pendant "(c) Hollycraft". Pendant measures 2 3/4" x 2 3/4" and the chain is about 20" long. Good vintage condition overall -- fabulous but not perfect -- a few of the stones show slight darkening on back side, and on the back of pendant only is noticeable finish wear down to the silvertone base metal -- none on the front of the pendant. The foldover clasp and attached end piece also show heavy wear. On bottom of pendant is a little nub of metal -- not sure if something is missing or whether it was just created during manufacturing.