Grape, 773 along with Dark Plum, 775 were the first purple tones in the borosilicate palette. Grape, 773 is a dark translucent rod and the rich nature of its color really pops when applied over white. In sculpture it will reflect black and transmit purple light.
Working Tip: Work in neutral flame to avoid reduction (gray streaks).
Artist Description by Mike Shelbo
This transparent purple is a what you see is what you get color that works amazingly. I love Grape for coiling bubbles and making solid color tubing sections, also for solid sculpture and marble work.
Grape is one of the only borosilicate colors available that works almost identically to clear glass in the way that it is smooth and creamy, melts easily, holds its heat very well and can be worked for very long amounts of time in the flame and kiln without any fatigue to the surface of the glass. Use with Glass Alchemy Warm Yellow for overlays and Glass Alchemy Green Sparkle for unique honeycombing and surface patterning.