I narrated it as follows in 2012 :
During his long career, Lalique mastered the full range of glass art, from luxury to mass production.
In 1911 he wanted to develop his luxury products in large size, hitherto disadvantaged by high rates of breakage. He began to improve the technique of cire perdue (lost wax) which he was already applying for several years in small bottles.
The first tests were satisfactory. Lalique hired the engineer Maurice Bergelin and entrusted to him the development of this complex process requiring a control of the thermal properties of materials at different stages of heating and cooling.
Executed by Bergelin under the guidance of Lalique in 1913, the 'Roses' vase is an achievement of this pioneering period. Less common than the similar technique for bronze, the verre à cire perdue reproduces its ephemeral wax mould with a great quality of sculpture in the bulk while also allowing the application of a patina.
Each cire perdue glass artwork was unique. Another Roses vase by Lalique is known. The location of a third specimen has been lost.