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Damigeron (4th century) [4] wrote about its property to make rain, solar eclipse, and its special virtue in divination and preserving health and youth. A Christian tradition states that the red spots come from blood falling upon the stone during the crucifixion of Jesus, as he was stabbed in the side by a Roman soldier. [ 5 ]
The Opificio delle pietre dure, literally meaning "Workshop of semi-precious stones", is a public institute of the Italian Ministry for Cultural Heritage based in Florence. It is a global leader in the field of art restoration and provides teaching as one of two Italian state conservation schools (the other being the Istituto Superiore per la ...
Historic rhinestone copy of the Florentine Diamond, made in 1865 in Paris by the L. Saemann company [1] Rhinestones on a tiara Rowenta enamel rhinestone compact. A rhinestone, paste or diamante is a diamond simulant originally made from rock crystal but since the 19th century from crystal glass or polymers such as acrylic.
[1] [2] For many centuries, it was the most sought-after goal in alchemy. The philosopher's stone was the central symbol of the mystical terminology of alchemy, symbolizing perfection at its finest, divine illumination, and heavenly bliss. Efforts to discover the philosopher's stone were known as the Magnum Opus ("Great Work"). [3]
Pyrite cubic crystals on marl from Navajún, La Rioja, Spain (size: 95 by 78 millimetres [3.7 by 3.1 in], 512 grams [18.1 oz]; main crystal: 31 millimetres [1.2 in] on edge) Pyrite's metallic luster and pale brass-yellow hue give it a superficial resemblance to gold , hence the well-known nickname of fool's gold .
The stone circle consists of thirteen stones and has a diameter of 11.4 metres. The stone circle is not a perfect circle, but is a ring with a flattened east side (13.4 metres north–south by 12 metres east–west). The stones have an average height of three metres. The ring covers an area of 124 square metres.
[2] [4] Supposedly, in 1974 Austrian engineer Ernst Wegerer (or Wegener) visited the Banpo Museum in Xi'an, Shaanxi, where he saw two of the Dropa stones. [6] It is said that he inquired about the discs but received no information, although he was allowed to take one in his hand and photograph them up close. By 1994 the discs could no longer be ...
[4] [5] Most gemstones are hard, but some softer minerals such as brazilianite may be used in jewelry [6] because of their color or luster or other physical properties that have aesthetic value. However, generally speaking, soft minerals are not typically used as gemstones by virtue of their brittleness and lack of durability.