The ColleVilca crystal is among the best crystal available on the market.
Tests performed demonstrate that it is the most transparent and one of the very best for its brilliance.
It is a unique combination of Sonority, Brilliance, Transparency and Dishwasher Resistance.
Its Brilliance is characterised by a high Refraction Index nD >1.56
(measurement made according to regulations in the visible field at 589.3 nm).
Its Transparency is matchless if one thinks that a glass thickness of 30 mm transmits light achieving a value of L >95.5, unique in its kind (L air = 100), determined according to CIE 1976 L*a*b*.
Unique Dishwasher Resistance for lead crystal compliant to EN-12875 standards, guaranteeing a minimum of 500 wash cycles, which in normal practice would correspond to an unlimited use of the article over time!!!
Its residual colour is close to absolute white (air), also determined on a thickness of 30 mm. In fact, the colour factor (F) is remarkably low (0.013).
Last but not least, its Sonority is achieved thanks to the particular lead content, which produces a long, unmistakable and persistent sound frequency, which will never be equalled by lead-free glass or crystal.
A balanced composition that allows full compliance with the regulations presently in effect. (69-493 CEE)
These results are truly striking and the values would even improve if they were determined at lower thicknesses!!
But the purpose of presenting values at higher thicknesses is that of demonstrating that ColleVilca not only produces goblets, but also other articles, and that quality is guaranteed for the entire product range and for all thicknesses.
