Where to buy ruby, sapphire, or Sic balls?

[geoff_45]

Where is the best place both price and reliability wise to purchase balls from 4mm and 6mm? Looking to use them for cooling.

Vgoodiez has decent pricing on 4mm but the 6mm are quite expensive but haven’t seen anything better.

 

[Radwin Bodnic]

Chineses online store are well supplied. Some of them have a lot of good feedback and ruby is easy to identify. Should be UV reactive and darkens when you torch them.

 

[Gnemesis]

I've gotten SiC in 3, 4 and 6mm from a company called Beracky via Amazon. Been a minute, tho.