A FANCY-COLOURED DIAMOND AND DIAMOND RING The cushion-shaped diamond weighing 3.00cts within a double four-claw setting, to brilliant-cut diamond belt and shoulders, mounted in platinum and 18K gold, ring size L¾ Accompanied by a report from the GIA laboratory in America, stating that the diamond weighing 3.00cts is natural Fancy Yellow, VVS1 clarity (with laser inscriptions). Report number 1186260235, dated February 21st 2018 Diamonds that come in colours beyond the normal colour range of D to Z are known as Fancy-Coloured Diamonds. They can come in a myriad of colours from deep yellows and browns to as pinks, oranges, blues and greens. Tiffany’s famous yellow diamond - a cushion-shaped Canary Yellow diamond - has firmly planted the desire for this wonderful yellow hue to grace our fingers or neckline. Yellow diamond engagement rings sported by Hollywood stars, such as Olivia Palermo, Jennifer Lopez, Heidi Klum and Jessica Alba prove that our adoration of yellow diamonds is steadfast. However, this love affair with yellow diamonds is nothing new and there is a long history of extraordinary yellow diamonds that have gained fame, both as exquisite examples of the beautiful nature of diamonds and because of the famous people who either wore, bought or sold them. Some examples of notable yellow diamonds are The Allnatt (cushion-cut diamond, Fancy Vivid Yellow 102.29ct), The Florentine (irregular nine-sided shape, Light Yellow, 139ct), The Incomparable (shield- shaped step-cut, Fancy Brownish Yellow, 407.48ct) The Mouna (cushion-cut diamond, Intense Yellow, 112.53ct), The Porges (Asscher-cut, Yellow, 78.53ct) and The Red Cross (cushion-cut, Canary Yellow, 205.07ct). Fancy coloured diamonds are far more rare than diamonds in the normal colour range. A diamond, particularly a yellow one that shows colour that's deeper or more intense or vivid than a Z colour stone, moves it from the ranks of normal coloured diamonds and into the realm of fancy-coloured diamonds. This rarity has a profound impact on diamond value. Understanding and describing colour when it comes to precious gemstones can be challenging. The 3 elements used to describe colour are hue, tone and saturation. The hue of a stone is the basic impression of a colour. But in order to get a complete picture of colour, you have to also consider tone and saturation. Tone is the amount of lightness or darkness in a colour and saturation is the strength, purity or intensity of the hue. The GIA uses an official grading system to describe the combined effect of tone and saturation on the diamonds hue. The scale is divided into 9 categories as follows: Faint Very Light Light Fancy Light Fancy Fancy Intense Fancy Dark Fancy Vivid A diamond’s cut can have an influence on its apparent colour and the bigger the diamond, the more obvious the colour.