Nebula Opal, or Oparex, is a heat-hardened resin with a mixture of silica. Different from lab-grown synthetic opal with high silica percentage, it only contains 25% silica. We can create this ring in almost any color you desire, simply add a note in the cart at checkout and we will find the customization right for you. HOW RINGS ARE MADE Each ring is custom cut using a diamond bit and lapped to your ring size using a lathe and jeweler's mandrill, the inside and outside of the ring are sanded and polished to a glass like finish making it true eye candy! Turn around time on a ring is 4 weeks depending on our order volume. CUSTOMIZING YOUR RING This ring will be made to order in your size, if you would like any other customization or general questions/suggestions feel free to send me a message! SIZING YOUR RING We handcraft your ring to your specific size, please be sure your ring size is accurate! It is highly recommended you have your finger sized by a local Jeweler. SHIPPING All rings ship for free in the United States. All orders will ship within 4 weeks. Any additional taxes or tariffs on international orders are the responsibility of the buyer. RETURNS If a ring is damaged in transit it can be returned for a full refund, we however cannot accept returns on rings with a misstated size from the buyer.