Related Clues:

• Spectrum-showing object
• Waterfall spray
• Glass triangle that separates light into the colour spectrum
• Cut-glass form
• It separates a beam of white light into colours
• A dispersive one is commonly triangular
• Spray-bottle output
• Drizzly day phenomenon
• Light-bending crystal
• Optical device used to invert an image
• Optical separator
• Light-splitting device
• Governess is sort of solid
• Worthing nurse, a solid figure
• Pair with a system to produce crystal