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Cheap Wholesale Jewelry Tell You A Brief History For Crystals
3 pages
Publié par
lincaihong1
Cheap Wholesale Jewelry Tell You A Brief History For Crystals
Looking at history we find that although cut glass was around for 2000 years, it was only in
the second half of the 17th century that pure lead crystal came into existence....
[Plus]
Cheap Wholesale Jewelry Tell You A Brief History For Crystals
Looking at history we find that although cut glass was around for 2000 years, it was only in
the second half of the 17th century that pure lead crystal came into existence.
George
Ravensrcoft an English glassmaker was experimenting with ways to improve the luster and
clarity of his glassware found that by adding lead oxide to his molten mixture changed the
properties of glass very dramatically.
It increased the clarity of glass and increased the
weight and the refractive index of the glass.
The glass also became very soft and it was very
easy to cut this glass without fracturing it.
The popularity of this cut crystal spread so much
that it led to a boom in the markets in Britain.
Eventually it spread all over Europe and
America.
History of crystal dates back thousands of years to the Mesopotamian times.
Lead oxide was
used to enhance the brilliance of glass as used today, but applied in different way.
This was
an alt
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