gemstones facts Selected as the most interesting among culture related questions in Culture quiz What was used as a unit of mass in the classical times?Carob seed. Carat, a unit of mass equal to 200 mg, is derived from a carob seed (Greek kerátion). People commonly believed that the seeds have unusually low variability in mass. Modern research denied this claim.Created by: globalquiz.orgunits facts » What is the Greek name for amber?Elektron. Words like "electricity" come directly from the name of amber. Already the ancient Greeks noticed that this stone has a certain mysterious property: when rubbed with fur, it begins to attract particles of dust...Created by: Marta_Smolarektechnology facts » Where do you have the best chance to find a natural diamond?Near the volcano. It is sometimes mistakenly believed that diamonds are made from coals. High pressure and heat is required for the formation of diamonds from carbons but these carbons are not the ones that form coal. Diamonds are formed deep under the surface and are brought up during outbreaks of volcanoes.Created by: Monica Stillerminerals facts » Where are emeralds found the most?In Colombia. Colombia is by far the world's largest producer of emeralds, constituting 50–95% of the world production. The Colombian emeralds are also the purest. The emerald trade is at the center of funding of ongoing civil conflict in Colombia, second to drug trade.Created by: globalquiz.orgColombia facts » What colour is emerald colour a shade of?Green. The name derives from the Greek smaragdos (as well as Lat. smaragdus - green). It refers to the characteristic colour of emerald stones.Created by: Paweł Kołodziejczykcolors facts » What colour is sapphire colour a shade of?Blue. The name of the colour comes from sapphire, a blue variety of the corundum.Created by: Paweł Kołodziejczykcolors facts » What mineral is a heliodor gemstone a variety of?Beryl. Heliodor is a yellow transparent variety of beryllium (emerald and aquamarine are also varieties of beryllium). The name derives from the Greek word helios = sun (sun-god) and doron = gift ("gift of the Sun").Created by: Paweł Kołodziejczyknames facts » Play culture quiz and see all the questions.