Beautifully carved, this little brooch measures just over 1 1/2" long x 1" across.  It may be celluloid, but the striations on the back may lead you to think "bone".  I'll leave that for the experts :) The roses are very intricate; however, they have holes in the middle.  I'm not certain that these weren't intentionally put there, or they may have held rhinestones at one point.  I have checked with my 10x loupe and there is no glue residue - it is a cleanly drilled hole.  Regardless, this vintage beauty is in excellent condition.