Dramatic ivory colored bangle bracelet

Vintage cream colored circle bracelet One side is wider than the other side, very unique and creative Modern looking Has a nice satin finish Excellent condition with tiny marks on one side, that are not noticeable. It was probably originally carved. Is this a Rare Bone by Bakelite, it sells for $247? Or is it antique ivory which sells for even more? Very smooth, it is on the heavy side (like ivory) 2 1/2” opening, 1”-1/2” width, probably good for a medium size hand. From my personal vintage jewelry collection