MagiCicadas

https://www.collectorsweekly.com/stories/204753-large-victorian-silver-gold-and-opal-cicada

Late 1800's brooch. Silver clad with engraved yellow and rose gold. Victorians loved symbolism in their jewelry. The cicada is a symbol of rebirth and immortality. This piece was probably intended as a token of eternal love.

Cicadamania.com

Eggs hatch and tiny nymphs make their way to the ground to burrow into the earth and feed on tree roots for the nest 13 or 17 years

After 13 or 17 years the nymphs emerge, tunneling their way up from under the ground. Their front legs are enlarged and perfectly adapted for digging.

thesmallermajority.com

When finally ready to molt, cicada nymphs climb trees and other tall objects, and transform into beautiful adults. This individual is a member of the Brood X, which emerged in 2004.

Newly emerged (eclosed) periodical cicadas are almost snow white, but within a couple of hours their body darkens and their exoskeleton becomes hard.