I don’t think it’s a male. I don’t see any saddle feathers/big tail feathers, the comb and wattles aren’t that big, and there are no spurs. He/she looks pretty hen-ly to me.
I’m not that good at this though, so I’m not that sure
I’m not a pro, but I believe it’s a cockerel. Sapphire Gems/Blue Plymouth Rocks are a sex-linked hybrid, and only males have barring like yours is showing.