The monatomic gold is smaller than the Colloidal Gold . Certainly my Dad has had Colloidal Gold for years to help with Arthritis and I have tried it with no immediate result (pre iodine).
When taking Manna (monatomic Gold) the bright spot in your third eye is immediate (<10s) and works for 2 out of 3 tested so far.
I have always taken it away from iodine; I tend not to mix anything with iodine.
That said, this CG http://www.colloidalgold.net/c-gold.htm
may act differently but what we where able to buy here previously was just like CS, No color no flavor...
EDIT
I should add that we added this Manna to the SCIO db and there is a direct correlation to CG. If you show up wanting CG with a value of 105 you will show up wanting Manna with a value of 140 (more)....
No brand name is given for the CG in the db so I don't know which one Dr. Nelson used to create the entry.