Yes however not all colloids can be made at home due to the need of consistent high voltage. In fact only colloidal silver has successfully been procured at home with kits such as those available by SilverLung
. Realm Dynamics has experimented with colloidal gold devices made available on the internet mainly through collodial gold machines
which proved to be disastrous. We report time and money lost in addition to a danger of such units catching on fire due to the unsustainable high voltage. The creator of these devices is aware of their flaws but continues to sell them in hopes of gaining more money from unsuspecting clients. Stay away from these devices in particular.