Glossary

Whether you are a seasoned professional or an enthusiast, Porolis Glossary is an invaluable resource that will enhance your understanding, streamline your research, and enrich your communication within the gemstone industry. With our expertise in photomicrography, AI and blockchain, you also learn specialized knowledge on how digital gemmology is applied and transforming the industry.

# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Idiochromatic Gems

The colour in idiochromatic gems come from elements that are an essential part of their chemical composition. These gems generally have only one colour, or show a very narrow range of colours. Peridot is an idiochromatic gem, which is always green, due to one of its essential elements, iron.

Illuminance

The amount of light falling into a patch of unit surface area, measured in lux.

Inclusion

An internal imperfection or characteristic which reduces the clarity or brilliance of a gemstone. Common gemstone inclusions are feathers, crystals, fractures, needles, graining, pinpoints and cavities.

Iridescent

An iridescent material displays many lustrous, changing colours caused by the reflection of light due to inclusions in gemstones.