Chinese smokey quartz sunglasses, 12th century. phoneus-on-hold Follow if I was chilling in the
TIL that, in 12th century China, sunglasses with lenses made from smoky quartz were used by court judges to mask their facial expressions and appear impartial. : r/todayilearned
Treasure of the Week: Antique Chinese Sunglasses « The Pankou
Bead, smoky quartz (heated / irradiated), light to medium, 15x10mm top-drilled flat teardrop, B grade, Mohs hardness 7. Sold per 15-1/2" to 16" strand. - Fire Mountain Gems and Beads
Cutler and Gross 1399 Smoky Quartz Glasses | italist
Sunglasses, smoky quartz - China - 19th century - Catawiki
Treasure of the Week: Antique Chinese Sunglasses « The Pankou
The oldest known sunglasses, from 12th century China : r/pics