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However, during the Tang dynasty (618–907), when the synthetic vermilion was introduced, that color became darker and richer. The poet Bai Juyi (772–846) wrote in a song poem praising Jiangnan, "the flowers by the river when the sun rises are redder than flames", and the word he used for red was the word for vermilion, or Chinese red. [27]
Other varieties of color-changing garnets exist. In daylight, their color ranges from shades of green, beige, brown, gray, and blue, but in incandescent light, they appear a reddish or purplish/pink color. [25] This is the rarest type of garnet. Because of its color-changing quality, this kind of garnet resembles alexandrite. [26]
The color and properties derive from a structure that is a hexagonal crystalline lattice belonging to the trigonal crystal system, crystals that sometimes exhibit twinning. Cinnabar has been used for its color since antiquity in the Near East , including as a rouge -type cosmetic , in the New World since the Olmec culture, and in China since as ...
The fruit and nut of S. acuminatum are collected from the tree, or the nut from a dropping of the emu; wild harvest remains as the primary source for the widely used fruit. This was the method adopted by the colonists after their introduction to it. [ 31 ]
The name langgan has undergone remarkable semantic change.The first references to langgan are found in Chinese classics from the Warring States period (475-221 BCE) and Han dynasty (206 BCE-220 CE), which describe it as a valuable gemstone and mineral drug, as well as the mythological fruit of the langgan tree of immortality on Kunlun Mountain.
It wasn’t until the 18th century that marmalades were made with other fruit like oranges. Membrillo or marmelada is a classic sliceable quince paste that shines on a cheese platter.
In gemology, the presence of such inclusions is regarded as 'diagnostic' for natural demantoid (i.e. these inclusions are not found in any other green gemstone). [13] Some gemstones are more valuable for their inclusions, [14] and 'horsetails' can be regarded as desirable features in demantoid, as they are taken as an indication of prestigious ...
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