Description Opal is often associated with love and desire, and we know you're going to love our Opal Stone Plugs. Stone plugs are an all-natural and stylish addition to any plug collection. A little heavier than steel, these beautiful Stone plugs are great for everyday wear and are the perfect addition to your growing jewelry collection. Product Details Material: Opalite [Synthetic Opal | info] Wearable Area: 6.7mm *Please note that these measurements are based on averages* Class: Stone Color: Glassy with blueish yellowy hints depending on how the light catches it. Believe us, they're gorgeous!