Yes, straight from Korea (where this trend started in 1990) is the stone bed. Yes, you read it correctly -- I said the Stone Bed.
The beds are pretty much what they seem -– like a flat bench -- though they aren't made completely of stone. Stone makes up just the top layer of an approximately 4-inch sleeping platform. The beds can be made of quartz, mica, topaz and several varieties of jade, and feature embedded heating coils that give off a low, radiant heat.
What could possibly be the advantages of sleeping on a stone bed?
Well, for starters, they are hypoallergenic, they last forever, and their radiant heat is reported to soothe muscles. Still, they aren't for everyone. These beds are most popular with Koreans with relatives who grew up sleeping on traditional mats on hard surfaces.