Has Anyone Experienced Gold Bearings? I am thinking about Getting some at Spin Gear In Tokyo
They play like regular bearings, and over time, the gold fades off.
How Long Do they Last?
They last as long as regular bearings.
If you could get me a plane ticket to Tokyo and arrange for me to go to spingear, maybe I could help you decide. 
sorry I just went today…
But the most exciting thing happened…I bought a YYJ yoyo with mirror caps and Shinji Saito was at the shop and signed my yoyo ( in permanent marker)
Well that made the trip all worthwhile then.
cool :o