Rosetta Lace sphere 3.25 in Polka Dot Agate is so

Polka Dot Agate is so named for it's polka dot pattern

Agatized dinosaur bone (often called "gembone") from Utah is fossilized bone where cellular structure has been replaced by silica-rich minerals like agate

This sphere does have a very small chip as seen in the pics

royal blue tectosilicate mineral—often veined with white calcite—known for its association with logic

Its primary constituent is silicon dioxide (SiO₂)

Rosetta Lace sphere 3.25 in Polka Dot Agate is so2. 6lbs. 92mm or 3. 75" approximately. Rosetta lace jasper sphere. Material is out of Mexico. A subvariety of Mexicos famous Crazy Lace Agate, Rosetta lace agate was actually the first ever mined pieces of Crazy lace mined in the 1950s! Unlike the crazy, sporadic banding of crazy lace, Rosetta lace has more muted, swirly, watercolor like patterns. It has the same scarlett, cream, and white coloring as high quality crazy lace as well!