Its very colourful .
Glass fusing occurs when two or more pieces of compatible glass are heated to high temperature in a kiln. Many different colours of glass are available but they must all have the same Coefficient of Expansion (CoE) if the finished article isn't to shatter. It is also important to carefully cool the glass to ensure it is annealed and all stresses are removed. Precise temperature control is critical and each piece of glass has its own categoristic and therefore no two pieces of fused glass are exactly the same once complete.
Dichroic glass has a unique multi-coloured shimmer resulting from a very thin layer of vapourized metals deposited on the surface. This layer has the unusual property of reflecting some colours whilst transmitting others - this categoristic gives the different colours depending on which angle the glass is viewed. It is available in a wide range of colours, textures and patterns, the true beauty of which is difficult to capture in a photo.
Pieces of dichroic glass before firing in a kiln
