Does the mantle have diamonds?

Excuse me, could you please clarify something for me? I'm a bit confused about the mantle you mentioned. Does it actually have diamonds embedded in it? I'm asking because I've never heard of such a thing and I'm quite curious. Diamonds are known for their rarity and beauty, so it would be quite remarkable if a mantle were adorned with them. Could you elaborate on this point? I'd really appreciate it if you could provide more details about this unusual feature.