COAIThree Sacred Treasures Magatama Stone Pendant Necklace

How do you adjust the length? I can't figure it out.

is green agate for females

Can you just send the magatama bead individually because, i am making an earring and how much ?

are you able to send magatama stone piece seperate ,i dont want the cord. I am making one earring with green agate how much for just one bead alone ?