BiveiRetro Antique Brass Chakra Necklace Hexagonal Prism Gemstone Quartz Crystal Stone Healing Pendant (Pack of 5)

Do guys buy and wear all of these or only the "masculine" colors?

How many chains come in the variety pack?

I bought the three pack and the clear quartz stone fell out of the pendant the first time I wore it. How would I go about getting it fixed or replaced

Is this plastic?