A solid 18ct white gold split shank elegantly supports a single lab grown 5ct alexandrite in this romantic ring design. Precision cut into a heart shape, the stone is almost internally flawless and boasts terrific colour changing qualities. Take a look at alexandrite in natural light and you'll see intense flashes of emerald green mixed with hints of blue. Observe alexandrite in incandescent light and the stone will change to a deep purple. Unsurprisingly, this unique colour changing property makes alexandrite one of the rarest and most sought after gemstones on the market.Single 5ct lab grown alexandrite. Heart cut. Available in sizes A-Z including half sizes.Lab grown gemstones hold the same optical and physical properties as their natural counterparts and offer a superlative cut, colour and clarity. Size: 10.4 mm (0.41 in). Material: 18ct White Gold. Total metal weight: 3.1 gr. 1 heart shaped lab grown alexandrite (10 x 10 mm) = 5 ct. Colour: Colour Changing. Stone cut: Heart Shaped