Up to -40% off all the photonic crystals!
From November 10 to 20
-10% off 1 BIOSKY photonic crystal (any selected colour)
-20% off 2 BIOSKY photonic crystals (any selected colour)
-30% off 6 BIOSKY photonic crystals (red, violet, yellow, white, blue, green)
-40% off 12 BIOSKY photonic crystals (2 red, 2 violet, 2 yellow, 2 white, 2 blue, 2 green)
-10% off 1 BIOSKY STICKER
-30% off 4 BIOSKY STICKER