These earring hooks are made from nickel-free, lead-free metal alloys.
They are hypoallergenic.
The gauge of these earrings is 20 mm (common gauge of earring hooks). 
They are sold as a pair.
AVOID getting any water, lotions, perfumes, or oils on these earrings.
 
With its brilliant green colors, these earrings pattern the emerald swallowtail butterfly!  This beautiful creature is native to Southeast Asia. 
 
I hand make each individual piece of jewelry so each piece may vary slightly from what is pictured, perhaps in the hook color or the relative size of the butterfly wing.