COLOUR https://perthdiamondcompany.com.au/wp-content/uploads/2016/11/GIA-4CS-COLOUR.mp4 Diamonds generally increase in value as their COLOUR moves from pale yellow to an absence of colour that promotes more reflection and dispersal of light. Even the slightest tinge of yellow or brown in a white diamond will decrease its value. White diamonds are graded on a scale that uses the letters of the … Continue reading 4Cs Colour