The ruby is considered one of the four precious stones, with the others being the sapphire, the emerald and the diamond. Ruby is red corundum, while a

Created naturally over many years, pearls are categorized as organic gem material and are amongst the oldest of precious gems. Every pearl is unique

The diamond is the world’s most popular and sought after gemstone with around 26,000 kilograms (57,000 lbs.) of diamonds being mined around the world

The chromium and vanadium present in emerald produce its vibrant colour, which is stable against light and heat and so will not fade.