Details about LOT 6 ANCIENT ISLAMIC ROMAN CARVED BLUE GLASS BEADS - Good Quality Bead - RARE -See original listing
12 Feb, 2014 19:16:42 GMT
Approximately £10.55(including postage)
[ 7 bids ]
6 ANCIENT ISLAMIC ROMAN CARVED BLUE GLASS BEADS
EXCEPTIONAL ANCIENT BEAD
I will combine shipping
Glass making was invented more than 2,000 years before the Roman Empire
The terms "Roman" or "Roman-period" glass are used to describe glass production from 100 BC to AD 400 within the boundaries of the Roman Empire.
Since approximately 1500 BC colored Roman Glass was made in Egypt, Palestine and Syria (Mesopotamian Empire). With the growing Roman Empire also the glass blowing techniques spread.
With the invention of the blowing pipe technique glass making was completely modernized and glass was able to be shaped freely by hand. Under the reign of the first Emperor Augustus (1st century BC) glass making became an industry in the Roman Empire.
Roman glass was made by using sand, alkali, sodium carbonate, coloring agents (metals) and was formed with burning seaweed and lime. Roman glass was produced in a large range of colors, patterns and frequently complex techniques. Metals were also used to make many colorful variations. Copper was used to make turquoise to light blue, green, red or opaque red colored glass. Some addition of cobalt made the glass dark blue. Yellowish and purple glass was created by the use of manganese and antimony to make the glass opaque yellow or opaque white. Also iron was used to make a light blue, green, brown and black color.Iridescence and opalescence on many ancient glass pieces is caused by the chemical decomposition of glass, the consequence of extended burial and the humidity and acid in the soil.
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