Guide Summary

The 4Cs of Diamond Quality is the universal method for assessing the quality and value of any diamond, anywhere in the world based on their Cut, Colour, Clarity and Carat



Cut has the greatest impact on a diamonds sparkle therefore is the most important of the 4C's                          

Colour grading is the second most important of the 4Cs due to its ability to dull its beauty. The less colour, the higher the grade. 


The most commonly known of the 4Cs refers to the weight of the diamond, however focusing purely on this can leave you with a large yet un-charming diamond.         

Diamond clarity

Clarity is the least important of the  4C's because the flaws it refers to are often unnoticeable to the naked eye. 



All Aurorastone diamonds are delivered with their original unbiased certificates  
with their 4C’s gradings.                              

Diamond Shapes

diamond shapes

Each shape has its own history and characteristics that may affect its  brilliance and price. 

Quality Assurance 

Having supplied some of the UK’s most prestigious and beloved retailers, only the finest diamonds meet our stringent criteria in order to be selected for our collection. All Aurorastone’s diamonds are evaluated by the most stringent independent labs in the world GIA, EGL, and DGC ensuring their  make the Aurorastone cut.

diamond 4C's