Northstar Mystery Aventurine boro glass is a brilliant aventurine color that strikes to deep purples and reds. When thinned it turns a pale yellowish amber. Mystery Aventurine is well suited for blown work and stringer application. It is not overly sensitive to reduction and is best worked in a hot neutral flame. For the best strike, kiln striking is the way to go. When using this color heavily encased keep work time to a minimum and kiln anneal thoroughly. Mystery Aventurine looks great over NS-076 Onyx and NS-054 Star White.