The opaque colours tend towards high colour saturation and so a little goes a long way. Dots made with the opaque Reichenbach 104 glasses on a base bead of a very soft opaque colour (for example Effetre White) have a "bleed" effect rather than a crisp edge when melted down.

Annealing Temperature range is 505- 520 Celsius. 

Working notes: In raw rod Mystic Pink is a transparent pink. Once heated it shifts to a variegated opaque pink. A little stiff to work and you need to be careful not to over heat as it get white spots if burnt.