Late Victorian Sash Belt Buckle Brooch With Amethyst Glass Acorns

Victorian sash brooch.
With glass and metal acorns.
Also with metal acorn leaves.
Purple glass is prong set.
May be missing an acorn.
Center of brooch acorn cup has an opening.
See photos.
C clasp closure.
Fair condition.
Measures approximately 2.5 inches by 1.5 inches.