Elegant DOCTOR WHO TARDIS Ring
Here's a cool looking Doctor Who inspired TARDIS ring that comes from Etsy user DTEK designs. If only wearing the ring allowed you to travel through space and time, that might make the $1,100 price tag worth the purchase. The ring is made to order in platinum, white gold, rose gold, yellow gold, or sterling silver.
Like the Doctor himself, this ring is trendsetting and lovingly unique. It is made using natural SI quality diamonds, G-H color and Natural Blue Sapphires. 1/4 carat total weight.
This comes from the artisan who created the Star Wars lightsaber ring, which you can check out here.