Concave Diamonds #557, Northwood
Stretch glass collectors also claim this pattern, but it sometimes shows up in Carnival auctions. The pattern is a soft quilting effect, always with a stretch-type iridescence. Complete water sets, like the celeste example above, will include coasters for the tumblers and a lid for the pitcher. Found mostly in celeste with occasional vaseline and rare russett/olive pieces showing up.
Water set, 14 pieces (with coasters and lid)

Celeste blue, 550 (2007), 575 (2009),
   400, 500 (both 2010), 650 (2013), 350 (2016)

Celeste blue, with original Jewel T box, 550 (2008)

Water set, 10 pieces (4 tumblers, coasters, lid)

Celeste blue, 375 (2013)

Water sets, 7 pieces (with lid, no coasters)

Celeste blue, 140, 400 (both 2011),
   200 (2012), 160 (2014), 300 (2016)

Water sets, 7 pieces (no coasters or lid)

Celeste blue, 200-300

Vaseline, 1,300 (2000), 800 (2006), 700 (2007)

Water set, 8 pieces (6 tumblers, lid)

Celeste blue, 385 (2010), 200 (2012), 160 (2014),
   150 (2016)

Water pitcher

Vaseline, 800 (2008)

Water Tumblers

Celeste blue, 20, 30 (both 2012),
   10, 25 (both 2013), 10, 20 (both 2015),
   5, 10, 15 (all 2016)

Olive/russet, 450 (2002), 450 (2012)

Vaseline, 35, 45 (both 2012), 60 (2013),
   20, 45, 115 (all 2014), 50, 55 (both 2015)

Tumbler and coster

Vaseline, 60 (2013)

Tumble up (water jar and small tumbler that stores inside neck), sometimes called a guest set

Blue, 175 (2009)

Celeste blue, 200 (1997), 525 (2000)

Olive/russet, 155 (2004), 100 (2009)

Vaseline, 475 (2009), 475 (2013), 350 (2015),
   1,050 (2016)

Tumble up tumblers only

Blue opaque, 80 (1998)

Celeste, 100 (2004), 30 (2010), 20 (2011),
   35 (2015)

Olive/russet, 45 (2009), 13 (2011), 50 (2012)

Sapphire blue, 20, 35 (both 2011)

Vaseline, 85 (2006), 10 (2009), 50 (2012)

The 6-inch ruffled vases were whimsied from the tumble up bottle minus the handle.

Vases, about 6 inches tall

Celeste blue, 65 (2011), 425 (2013),
   75 (2014), 60 (2015)

Citrine, 65 (2005)

Ice blue, 45 (2007)

Russet/olive, 95, 120, 275 (all 2003),
   85 (2004), 130 (2007), 60 (2015)

Vaseline, 250 (1997), 450 (2003), 85 (2016)

Last updated 1/7/2017

It's not known if this pickle castor was made by Northwood or is from the same line, but, in marigold, it sold as Concave Diamonds at a 2009 auction for $545. Another brought $375 in 2012.