For those not familiar with the decor, it's made by placing heavy threads of contrasting colored glass on a parison (the rounded glob of molten glass) and pulling those threads all over the surface of the object in a random pattern. When ready, the vase is softly iridized; a lighter application up top gradually increasing as you go down. A good illustration is pic 4, where the top is light in color and smooth in texture. As you go down, and more iridescence is applied, the color darkens and begins to reflect shades of purple and blue until you reach the base - where it lightens again.
Notice the change in texture as well. Called King Tut in early catalogs, it came to be known as "Coil" as another, more refined pattern was developed.. Its stands 10 tall and is in wonderful, damage-free condition. The pontil was broken off and left as is; not ground and polished.
Although the vase is unmarked. I was provided screenshots of a couple of marked pieces - one with a photo and the other in the narrative (pics 10 and 11). Is a published example of the decor. FOR THE LANDSCAPE PICS (6, 7, 8), TURN THE IMAGE TO VIEW FULL SIZED. The item "DURAND BLUE AURENE VASE WITH COIL DESIGN" is in sale since Saturday, January 4, 2020.This item is in the category "Pottery & Glass\Glass\Art Glass\North American\Other North American Art Glass". The seller is "bigdady1955" and is located in Dover, Delaware. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Dominican republic, Panama, Trinidad and tobago, Guatemala, El salvador, Honduras, Jamaica, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Montserrat, Turks and caicos islands, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Ecuador, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Peru, Pakistan, Paraguay, Reunion, Viet nam, Uruguay, Russian federation.