BANGLE,VERY FANCY,I DON'T KNOW WHAT IT IS MADE OF

THIS IS A LARGE HEAVY BANGLE WITH ONE BIG STONE IN THE CENTER. I HAVE NO IDEA WHAT THE BANGLE IS MADE OF. I AM NOT A METALLURY SPECIALIST. IT LOOKS KIND OF BRASSY,BUT IF YOU CUT IN IT OR THROW ACID ON IT, IT MIGHT TURN OUT SOMETHING ELSE. I DON'T HAVE THE ACID AND I DONT WANT TO RUIN IT BY CUTTING INTO IT. THE LARGE STONE LOOKS LIKE A TOPAZ,BUT THEN AGAIN,IT COULD BE A PIECE OF GLASS.I DON'T KNOW, I AM NOT A GEMOLOGIST. BUT IN THE MIDDLE OF THE UNDERSIDE THERE IS A TAG THAT SAYS WENDY CELL OR WENDYGELL AND IT ALSO HAS THE c IN THE CIRCLE WHICH MEANS COPYRIGHT MARK. SO IT MIGHT BE DESIGNER JEWELRY. TOO. THE OPENING TO PUT YOUR WRIST THRU IS APPROX. 1 1/2 INCHES LONG.IF THAT HELPS. NO RESERVE.TO BE SOLD TO THE HIGHEST BIDDER