2 cm dalle de verre set in .5 cm lead cames. Flat chunks of “slab glass” were sculpted as jewels with small silver hammers to shape them and enhance colours and light transmission. Simple figures or symbols could be added, but the Raults often wove patterns of several colours.
The studio smelted their own dalle de verre outdoors every autumn, for safety and to allow ample space for materials.
Deeply coloured batches of molten glass were made from sand in large cauldrons fired to 1500 Celsius, fired by natural gas from Algeria. The Raults would sometimes toss in trace minerals which produced random colour trails in the finished glass: fresh stock for the upcoming year.
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