I have a quick question on the 300 rings.  Does anyone know whether the diamond in the 300 ring is cubic zirconia?  I know that it is on the "freebie" or regular siladium ring. I'm just wondering whether it is on the 300 10k gold ring as well.

Also, I have the same question for the Eagle Design 300 10k gold ring as well.

The reason I'm asking is because I shot my 2nd 300 game last night and I'm considering on upgrading it later on.