This silicone mold makes 1 3D diamond shape. It's made to pour resin into and let set, creating 3D votive candle holder.

Size: about 2.17 inch (55mm) in diameter, 3.03 inch (77mm) long

Quantity: 1 mold

Each mold is reusable and makes 1 shape at a time.
Since the cure time for resin can be 24 hours, you might consider stocking up on more than one so you can work on multiples at the same time.