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The name Opal comes from three sources. One is the Latin word "Opalus". The second one is from your Greek word "Opalliois" meaning a difference of colour lastly from your ancient Sanskrit word "Upala" meaning precious stone. If one speaks of gemstone over these tongues the saying Opal would be Opallious upala, which suggests precious stone.Which shows of assorted colours when shifted against light. Testing for vitamin C levels in several types of orange can be another favorite science task for many scholars. Thanks to the limited available references on vitamin C levels in citrus juices and just how it degrades as time passes , this website attempt to deliver some info on this issue to assist students find additional references because of their science projects.