Stunning TALL 12" Cylindrical Studio Pottery Vase Blue/Gray SIGNED

Stunning TALL (12" by 3 3/4" wide) Cylindrical Studio Pottery Vase Blue/Gray Tamara Jane? Roswell? I could not make out the signature on the bottom (see 4th photo) Tamara, Tanum, Tamani ? Jane? Island? Roswell, Boswell, Baswell? Tamani Island? Hope someone knows! NICE QUALITY Beautiful shades of ocean blue, with gray slate color stripe. Heavy, weighs 2 lbs. 7 oz. It does have a hairline crack that is not deep and not very noticeable near the top, which is shown in the 3rd photo. Interior is clean. An interesting piece! Ships well protected.