Blue Gemstone, a little mesmerising as it seems to be Metallic materials on the inside. It's STUNNING in person.
Measurements in cms in pics and size guide as shown on Anna & the prop.
The chain is a little old but the pendant is gorgeous and you could remove it and put it on any other chain of your choice.
Pendants this beautiful don't come cheap. The price reflects the value of the pendant, not the chain so much.