Sculpted Droplets. Indigo stream art glass with black glass base includes imprint and silver color-fill on base only. Each art glass is individually blown. They will have variances in size, shape, and color. No two pieces will be identical. Small air bubbles and flaws are characteristics in these unique, one of a kind, handmade items. Imperfections and blemishes are inherent and non-avoidable. Art glass should only be considered if this is acceptable.