Equivalent of this in center CZ stone carats?

[DreamingOfDiamonds]

Here is the image & the stats per the website:

Silver Halo Cubic Zirconia Wedding Engagement Promise Ring #R1658-01

This halo ring will light up your finger with incandescent radiance. Crafted with fine 925 sterling silver, rhodium plated, nickel free. Main stone features premium grade 0.45 carat round cubic zirconia (5mm) in 4-prong setting. Accented with 0.17 ct.t...

www.berricle.com

Stats/Specs:

• Stone: Main stone features premium quality 0.45 carat (5mm) round cubic zirconia in 4-prong setting. Accented with 0.17 ct. tw. round CZ in micro pave setting.

 

[Bron357]

Do you mean equivalent diamond carat weight for mm size?
A 5mm diamond will be slightly more carats as diamond has higher specific gravity (more dense) so .50 carats of diamond for 5mm round size.

 

[DreamingOfDiamonds]

Do you mean equivalent diamond carat weight for mm size?
A 5mm diamond will be slightly more carats as diamond has higher specific gravity (more dense) so .50 carats of diamond for 5mm round size.

OK thanks, yes I was wondering b/c the Berricle site says "0.45"? wasn't sure though. Thank you