I am intrigued by the back of gold iPhone Xs. It looks like a different color (hue?) in different reviews.
While looking at several YouTubes, it hit me: It's like the milky iridescent colors in Mother of Pearl. I wonder if that was the original inspiration for the back.
https://www.jewelrysupply.com/Mother-of-Pearl-Cabochon-18x13mm_p_17430.html
from Wikipedia: it's
[...] an organic-inorganic composite material produced by some molluscs as an inner shell layer; it also makes up the outer coating of pearls. It is strong, resilient, and iridescent.
While looking at several YouTubes, it hit me: It's like the milky iridescent colors in Mother of Pearl. I wonder if that was the original inspiration for the back.
https://www.jewelrysupply.com/Mother-of-Pearl-Cabochon-18x13mm_p_17430.html
from Wikipedia: it's
[...] an organic-inorganic composite material produced by some molluscs as an inner shell layer; it also makes up the outer coating of pearls. It is strong, resilient, and iridescent.