The glass can be hot-cast, saving material and labor cost. Crystal is a crystal, can not be reversed after heating melting, so can not use hot casting method, can only use cold processing method such as cutting grinding. Cost of materials, labor, high cost.
Around the first year of the AD, due to the promotion of the Romans and their strict production process, glass achieved great success. Glassblowing (a technique brought to Rome from Syria) enabled artisans (often slaves) to make glass cups and bowls much faster than before. Cheap glasses began to appear on the market. Soon, the popularity of glass among ordinary Romans rivaled that of ceramics. Artists began experimenting with richer forms of art with glass, creating Rose Janus face vases and wine bottles decorated with scenes of nativity. Builders began to use glass for Windows, but because the glass was cloudy and heavy, the purpose was not so much for lighting as for safety and insulation. We find traces of glass Windows throughout Rome and surrounding cities, including luxurious tiles and well-preserved bathhouses in Pompeii.
Mirrors have always held a special place in human culture, serving as reflections of ourselves, both literally and metaphorically. Among the various types of mirrors available today, real silver mirrors stand out for their unparalleled clarity, depth, and aesthetic appeal. Crafted with a layer of silver applied to glass, these mirrors have a timeless quality that resonates with elegance and sophistication.