Real diamonds?

[Garabaldi]

Any guesses on if these stones are real? Two are purple. No markings on the metal ring. Not sure what king of metal.

 

[Iron Patch]

Guess... not a chance.

 

[Alchemy]

Very doubtful that a genuine diamond would be set in a non-gold ring.
You can see that the ring isn't gold. Though, the purple stones could be real amethyst, but are probably glass like the clear stone

 

[Garabaldi]

Thought so. Thanks.