Discount on all the photonic crystals up to 40% off
-10% off 1 BIOSKY photonic crystal (colour of choice)
-20% off a set of 2 BIOSKY photonic crystals (colour of choice)
-30% off a set of 6 BIOSKY photonic crystals (red, violet, yellow, white, blue, green)
-40% off a set of 12 BIOSKY photonic crystals (2 red, 2 violet, 2 yellow, 2 white, 2 blue, 2 green)
-10% off BIOSKY STICKER
-30% off a set of 4 BIOSKY STICKER
