This exciting Daum blue floral vase is very sophisticated. The glass was layered when it was molten, first with a deep blue layer, then with a pale green layer. When the vase was cold it went through the standard acid-etching process, which revealed the flowers and leaves. What makes it special is what happened next. All of the flowers, buds and background were wheel-carved. This required a highly skilled craftsman who spent hours creating the incredible detail which is only possible with wheel-carving. It's a masterpiece. Nice big size at 12" tall and bulbous. Fancy engraved signature along the foot rim. Mint condition.