Color shifting skulls and hand wired glass beads on chain and silk.
The sparrows are solid cast resin skull with pigments brushed into the surface of the mold so that they are fused to the skull. This is a color-shifting pigment, so it changes based on angle of view and light.
Made from molds taken from the real thing, they also pack a lot of detail.
Last photo is for the scale of the skull only.
Necklace is adjustable based on how tightly you tie the silk.