Mathmatiks Turntable Ring. This would be a great match to my boombox necklace and matching purse. Available on Etsy, this 18 karat yellow gold turntable ring (paved in 2.63 carat diamonds and black diamonds), is going to set you back a bit. $20k to be exact. Which means it's immediately off my radar. But oh oh oh how I so adore this ring! Any generic versions, let us know!