Artist Description by Mike Shelbo:
"This is one of my favourite translucent WYSIWYG colours. This brownish olive green transparent is wonderful for solid colour sculpting and works very nicely for blown work as well.
For larger blown work, I recommend sandwiching between a clear tube and another layer of clear or transparent colour, reason being that Beryl is made up of a significant amount of copper. When a heavy copper colour is not encased and on the surface for blown work that will be melted, blown, and manipulated it will tend to react with different amounts of propane and oxygen in your flame mix. So where Beryl may feel similar to working clear, it will prefer working about halfway to three quarters of the flame length away from the tip of your torch in an even mix of gas.
Heavy reduction or propane in the flame mix, very close to the tip of your torch, will react with the copper in the colour causing different surface effects. A very natural tone for your colour palette, Beryl will compliment many other Glass Alchemy colours and when standing alone should be given the opportunity for light to transmit through the colour for best presentation. - Mike Shelbo