AAA Top Gem Grade Natural Welo Opal Rough Unsearched Bags. Full of Fire and Flash. Sizes range from 3 to 15 carats in these premium lots.The item "AAA Top Gem Grade Natural Ethiopian Welo Opal Rough Unsearched Bags" is in sale since Tuesday, November 10, 2020. This item is in the category "Jewelry & Watches\Loose Diamonds & Gemstones\Loose Gemstones\Opal\Other Opals". The seller is "desertstararizona" and is located in Tucson, Arizona. This item can be shipped worldwide.