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.

 

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[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.