Species: Natural Opal Type: Crystal Opal Fire: Multicolor Fire and Play of Colors. Color: White, Yellow Shape: Oval Mixed Cut Total Weight: 4.19 ct. Measurements Approx: 6x4 mm. Treatment: No indication of treatment Transparency: Transparent Origin: Ethiopia "Treatment and origin declarations are the opinion of the seller." Shipping with registered tracking number. Poczta Polska. The delivery time in Europe is 12-31 days, while in Asia and America 15-45 days, usually the delivery time is much shorter, but it always depends on the postal employees. Please always track your parcels, and pick them up from the post office of your city if the postman did not deliver the parcel to your home. Sites for tracking the parcel: https://emonitoring.poczta-polska.pl/?lang=en https://parcelsapp.com/ https://m.17track.net/en/track If you have any questions, please send me a private message and I will answer as soon as I can.