Help determining the depth of a set stone

[KLC]

I have a 6.5 mm round brilliant moissanite that I want to have a semi mount made for. The vendor is asking for the depth in mm but all I know is the percentage. Can I multiply the % by the diameter to get the mm? 62.5%×6.5mm= 4.03mm?

 

[Peary]

Did the moissanite vendor provide that diagram? Can you just ask the moissanite vendor to measure the stone for you, if they still have it?