Northstar Amber/Purple boro: Of the striking colors in the borosilicate palette the Amber/purples are some of the most exciting. NS-013 is the first in a series of five Amber/Purple colors. It is well suited for sculpture and moderately thin blown work. The color can produce pale yellows to ambers to a deep purple. To yield the most vibrant purples, work in a hot neutral to slightly oxidizing flame. Reduction will affect the strike. Try encasing your favorite Amber/Purple with NS-032 Violet, or NS-031 Lavender. To enhance NS-013 Amber/Purple try backing it with NS-054 Star White.