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This exquisitely crafted work would be a beautiful addition to any crystal collection and a wonderful souvenir for anyone who has seen Notre Dame in Paris, France.
Many of these products have been highly praised by state officials and have been selected to be the nation and government presents sent to chiefs of state of over 30 countries, including the USA, UK, France, Canada, Japan, and Singapore. They have also won 21 prizes in some professional competitions, including the China Artists and Arts Masterpieces Exhibition and the China Travel Souvenir Design Competition.
These exquisitely crafted miniature monuments are made from the finest materials. Using K9 Optical Crystal and 24K Gold plated accents assures you of quality.
71 x 61 x 45 mm or
2.79 x 2.40 x 1.77 inches
Gross Weight: 260g (0.5lb)
This is the difference between optical crystal and crystal.
K9 Optical Crystal is extremely hard and clear. This permits specialized polishing to produce a surface that transmits light with little or no distortion, which sparkles with diamond like brilliance when cut into facets. Its precise optic effects, developed for the scientific requirements of lens makers, also make it the finest engravable surface for artistic impression. Optical crystal pieces also have the distinction of being lead free, and are available in a variety of solid forms.
Crystal refers to particularly clear, hard glass with superior ability to transmit and reflect light. Lead crystal, so named because it contains lead, is familiar to many due to its traditional use in cut glass tableware. However, there are several types of crystal, many of which do not contain any lead.
Lead oxide when added to the molten glass gives lead crystal a higher index of refraction than normal glass, and consequently greater "sparkle". There is a strong perception within the industry that lead crystal products command premium prices, so they continue to use lead oxide to inflate prices. "But manufacturers are now under pressure to adopt alternatives to lead crystal," says Professor Nick Priest of Middlesex University in the United Kingdom. "The use of lead involves risks to workers and to the environment. Countries such as Denmark and the United States are attempting either to ban or restrict its use in consumer products."
However, lead-free optical crystal glass has a refractive index higher than 1,52 which makes it especially useful for works of art to provide a luxurious character, with high lustre and light transmittance.
Notre Dame information:
Proceeded by a Gallo-Roman temple to Jupiter, a Christian basilica, and a Romanesque church, construction of Notre-Dame de Paris began in 1163 during the reign of Louis VII. Pope Alexander III laid the foundation stone. The idea to replace the Romanesque church occupying the site - the Cathedral of St. Etienne (founded by Childebert in 528) - was that of Bishop Maurice de Sully (who died in 1196). (Some accounts claim that there were two churches existing on the site, one to the Virgin Mary, the other to St. Stephen.) Construction was completed roughly 200 years later in about 1345.
The choir was completed in 1182; the nave in 1208, and the west front and towers circa 1225-1250. A series of chapels were added to the nave during the period 1235-50, and during 1296-1330 to the apse (Pierre de Chelles and Jean Ravy). The transept crossings were build in 1250-67 by Jean de Chelles and Pierre de Montreuil (also the architect of the Sainte-Chapelle). It was essentially completed according to the original plans.
Since then it has been restored and modified several times.