https://farm5.staticflickr.com/4696/40156633072_95722616a9_b.jpg https://farm5.staticflickr.com/4618/25317839917_8b30969ff7_b.jpg https://farm5.staticflickr.com/4696/39477824554_0128bc5438_b.jpg Chalcedony "Chalcedony" also known as "stone marrow" is a quartz, SiO? Cryptocrystalline body collectively, It is a variant of quartz (cryptocrystalline), a cryptocrystalline, colored quartz gemstone. With grease luster to shiny glass, waxy light. A mineral composed of silicon dioxide, translucent or opaque crystals, General milky white, gray, hard texture. Chalcedony was formed at low temperature and low pressure conditions, appeared in the voided rock, Hydrothermal veins, hot spring deposits, clastic sediments and weathered shells. Chalcedony is regarded as a gem by people, and the well-known agate is the same kind of mineral. Implicit crystal quartz ribbon structure is agate, No strip structure, the same color of cryptocrystalline quartz is chalcedony. "Chalcedony" is one of the oldest types of ores in human history, Common main colors: transparent to milky white, gray. Natural chalcedony has a heat dissipation, often not easy to wear water, will bring the more ice through. Color chalcedony; commonly known as ice-chalcedony and ice chalcedony. Is the chalcedony family, the most scarce a species. In the jewelry industry is classified as a sequence of colored stones. Chalcedony ice in the most representative product - Jinshui Bodhi. Ice kind of chalcedony, with its clear texture of clear Ying, natural, bright color advantages, Has become the new darling Choi Po market. "Chalcedony" must take off first before taking a hot bath or soaking in hot springs; Because chalcedony will be afraid of heat, if continuously with a hot shower a few days, Or often work at high temperatures near the fire, Chalcedon will dry due to dehydration, become less transparent, So try to avoid long time in the over-temperature environment. https://farm5.staticflickr.com/4661/40189634931_13930f4f61_b.jpg https://farm5.staticflickr.com/4610/40156633092_0448f13ff6_b.jpg https://farm5.staticflickr.com/4720/40189634741_c83762ae5d_b.jpg [ product features ] Round polished chalcedony. Quiet and lovely. Crystal pure. No trace of impurities. Full of water Semi-transparent gel jelly. Material: natural ore Madagascar chalcedony. Gold alloy fall Taiwan. Size: Ore: 29.5 mm long and 17.5 mm wide and 12 mm thick. https://farm5.staticflickr.com/4621/40189635281_c7c386cae2_c.jpg https://farm5.staticflickr.com/4753/40189635081_f255b06206_c.jpg https://farm5.staticflickr.com/4604/39477824794_fa7310f893_c.jpg [ Precautions ] 1 natural ore please avoid exposure to heat, hard objects collide. Go to the beach to play, sunbathing, hot springs and so should not wear jewelry, And maintain moisture, and occasionally can be placed in the water, keep moist, The usual wear to play touch, human sebum can be its internal structure, Play a protective role, make the natural ore more shiny beautiful. 2 jewelry maintenance. Usually do not wear, can be placed in zipper bag collection. Metal can be cleaned with silver polishing cloth or toothpaste. After cleaning, please dry the water. 3 color may be different for each monitor screen. There will be a slight color difference. Please consider the above. 4 Museum photos and introduction of goods. Has tried to describe the status of the goods. If you want to know, please contact us.