A stunning ring crafted from 9ct white gold set with a central octagon shaped blue sapphire with single cut diamonds either sidesapphire jewellery particularly blue sapphires are steeped in royal tradition lady dianas and now kate middletons ceylon sapphire engagement ring is one of the most popular sapphire jewellery pieces in the royal collectionadmired for their striking beauty and strength and being a girls best friend diamonds are the precious stone emblematic of the greatest rom