Open Rose - Imperial
This is actually the same pattern as Imperial's Lustre Rose, though collectors have traditionally referred to collar based bowls and plates as Open Rose. So following this simple rule; if it's collar based, it's Open Rose, everything else is Lustre Rose. Imperial and several succeeding glassmakers reproduced this pattern. Colors found in Open Rose include amber, aqua, clambroth, a rare blue, green, Helios, lavender, marigold, purple and smoke.

Above to the left is a 9-inch plate in purple. The small ruffled berry in blue, on the right, sold at the 2012 Heart of America Carnival Glass convention auction. Photo courtesy of Seeck Auctions.

Pictured above is a rosebowl in marigold and a large bowl in teal.