Finetec Mica Colours (Single Pan)

Made of mica, a natural product that offers a wide variety of metallic shades, from gold and silver to iridescent, shining pearl colors. Can be dissolved with water and applied with a brush. Ideal for creating special effects and highlighting. Can be blended. Colors adhere to all absorbent surfaces, such as paper, wood, gypsum, etc

Single pans are bigger than the pans you buy in a palette. They measure about 32 mm in diameter.

Please do keep in mind that this need to be blended with water to create a ink consistency, then applied to the nib with a brush. 
Here's a tutorial on using it: https://thepostmansknock.com/creating-gold-calligraphy-how-to-use-the-finetec-palette