To preserve the beauty and longevity of opal jewelry, it is important to take certain precautions. Avoid sudden changes in temperature, as opal tends to dry out. This can cause cracks in the stone and spoil its beautiful appearance. In addition, avoid contact with chemicals found in perfume, hairspray, cream, etc. Store opal jewelry in a dry, cool and dark place when not in use, and clean them gently with a soft cloth as needed.