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The Alexandrite effect has also been observed in some other minerals, such as fluorite, sapphire, kyanite, monazite, spinel, garnet, tourmaline, and rare-earth oxalates. Not to be confused with the alexandrite effect, some minerals also exhibit pleochroism. The former is a response to different wavelengths of light in general, the latter an ...
Virtually all gemstones that show the "alexandrite effect" (color change or 'metamerism') show similar absorption/transmission features in the visible spectrum. This is an absorption band in the yellow (~590 nm), along with valleys of transmission in the blue-green and red.
Midget Gems (also known as Mini Gems) are chewy, firm sweets similar to wine gums but much harder. They are manufactured from sugar and glucose syrup , corn starch and/or various other starches, animal gelatin , and various colourings and flavouring .
Rock candy or sugar candy, [1] also called rock sugar, or crystal sugar, is a type of confection composed of relatively large sugar crystals. In some parts of the world, local variations are called Misri , nabat [ 2 ] or navat .
Pure crystals of garnet are still used as gemstones. The gemstone varieties occur in shades of green, red, yellow, and orange. [54] In the United States it is known as the birthstone for January. [2] [55] [56] It is also the birthstone of Aquarius and Capricorn in tropical astrology. [57] [58] The garnet family is one of the most complex in the ...
Dreamcast (NTSC version) The Dreamcast [a] is a home video game console developed and sold by Sega.The first of the sixth generation of video game consoles, it was released in Japan on November 27, 1998, in North America on September 9, 1999, and in Europe on October 14, 1999.
Despite the similarity of their names, chrysoberyl and beryl are two completely different gemstones, although they both contain beryllium. Chrysoberyl is the third-hardest frequently encountered natural gemstone and lies at 8.5 on the Mohs scale of mineral hardness , between corundum (9) and topaz (8).