Pair of Vintage Pinart Handcrafted Art Glass Brooches Pins one NWT 1988 Y2K

Pinart Studios made these art glass brooches by hand in 1988. They are rectangular with a modern, abstract design. New on card one is yellow, back and white. The other is the same shape and style but with red, black and white. Very 2K, new wave aesthetic. The artist used kiln temperatures reaching 1400 degrees to fuse multiple layers of colored glass, creating with a smooth, polished finish. Note that the back of the black one has areas where the excess adhesive for the pin is visible. Being sold as a pair. Questions and offers are welcome.