Gypsum Locality: Red River Floodway, Winnipeg, Manitoba, Canada (Locality at mindat.org) Size: 9.4 x 4.9 x 4.5 cm. This specimen consists of excellent, very aesthetic, razor-sharp, golden color, gem, “fishtail”-twinned crystals of Gypsum sitting atop a “ball” of Gypsum which is comprised of several single bladed crystals. The largest twinned crystal measures 4.3 cm long. This “floater” crystal formed in a calcium clay/sediment and has no point of attachment whatsoever. The color is very attractive for the species as well. The material is typically very fluorescent as well. Ex. Brian Kosnar Collection.