Asking Opinions on $$$$ Value

When I was looking for a present, I saw this and liked it. I thought it was interesting. It's supposedly lava, in 9k gold. It's supposedly hand carved and depicts the Spanish artist Jusepe Di Ribera. The broken one I bought is far superior IMO for beauty and uniqueness.

Without looking this up. What do you think the actual value of this is? If you had money, how much would you pay for this?

I think it's a fair price if it's actually hand carved lava. But, I'm beginning to wonder if I know the difference when it comes to something being sold as hand carved lava.