How much is a brand new 10k white gold cl ring with a blue saphirespinnel and 18 1-pt cubitzirconium worth?

i won a free cl ring from jostens that i could choose, i chose one that cost about $530 and i don't really think it is worth that much, i got it for free, but i'm just curious what it's worth is: 10k white gold, blue sapphire spinel in middle surrounded by 18 1-pt cubit zirconia, cross on one side of the ring, school mascot on the other, if interested