Emeralds are soft gemstones that need extra care when compared to rubies and sapphires, so here are a few basic tips that can help you preserve the lustre of your emerald:

● Avoid perfume, hand sanitizers, and any strong liquids.

● It’s highly recommended to apply olive oil once a month to protect the stone from dryness. 

● The best way to clean emeralds is to soak them in warm, soapy water. Ensure that you avoid harsh detergents that might remove or dilute oils from the stone, and never soak emeralds in solvents such as alcohol, acetone, or paint thinner.