Question about diamond stud weight

[DuckLovingVegan]

I don't know much about diamonds period. Although I've learned a lot being here on pricescope. My question is when they say a pair of round studs is 6.5mm/1.00 ctw does that means that each stud is 0.5ct which add up to the total carat weight of 1.00? I just bought a set of cz round studs because I wanted to play around with what look good in my ears. The 4mm cz were nice but a little small. The 6.5mm cz were a little too big for me. While the 5mm were just right. I looked up a mm to carat chart and it said 4mm were .23ct, 5mm= .47ct and 6.5mm= 1.00 ct. Do the round cz equal to the same size round diamonds would be? Would that mean to equal 4mm weight I would have to buy two .25 ct diamonds? I'm posting the 5mm in my ears for reference and opinions. Thank you all in advance for the help.

 

[pancake]

Yes, they roughly equate. A well-cut 1ct RB faces up around 6.5mm (although depends on the stone of course). I recently bought my MIL a pair of 0.44ct stones which faced up around 4.9mm each.