800 Carats AAA Top Gem Grade Ethiopian Welo Opal Rough all with Fire and Color. Direct from Ethiopia these are Top Grade High Graded lots. Sizes measure each opal from 10mm to 20mm. Weight is large from 5 to 15 carats each opal. Visit our e bay store at.The item "800 Carats AAA Top Gem Grade Ethiopian Welo Opal Rough ALL with Fire and Color" is in sale since Saturday, November 21, 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.