How to figure out carats of the By the Yard Necklace?

[2v2hunters]

Hi all, I recently acquired three pieces of the single stone By the Yard pendant necklace pre-loved. They are all different sizes and weight. Is there a way to tell the carat of the diamond by looking at just the size of the pendant and weighing the necklace? Or some other way? Thanks in advance!

 

[aileon19]

Hi all, I recently acquired three pieces of the single stone By the Yard pendant necklace pre-loved. They are all different sizes and weight. Is there a way to tell the carat of the diamond by looking at just the size of the pendant and weighing the necklace? Or some other way? Thanks in advance!

I had tried on two different sizes and you couldn't really see any difference. I had tried on the yg 18 inch with 0.8ct and the rg 16 inch 0.7ct.
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*Show Your Tiffany DBTY Necklace!!!*

Hey, if any of you have bought the DBTY necklace from Tiffany Co, no matter it's made of silver, gold or platinum, feel free to post pictures of you items or write something down towards your necklace, here is mine::p

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