9 6 , ▁in ▁context ▁with ▁be ads ▁as ▁well ▁as ▁with ▁other ▁glass ▁objects . ▁ ▁Ven et ian ▁che v ron ▁be ads ▁are ▁drawn ▁be ads , ▁made ▁from ▁glass ▁can es , ▁which ▁are ▁sh aped ▁using ▁specifically ▁constructed ▁star ▁m ould s . ▁The ▁first ▁che v ron ▁be ads ▁were ▁made ▁towards ▁the ▁end ▁of ▁the ▁ 1 5 th ▁century , ▁consisting ▁of ▁ 7 ▁layers ▁of ▁altern ating ▁colours . ▁They ▁usually ▁have ▁ 6 ▁fac ets . ▁Un like ▁their ▁later ▁counter parts , ▁they ▁were ▁not ▁always ▁made ▁with ▁the ▁standard ▁ 1 2 - point ▁star ▁m ould . ▁By ▁the ▁beginning ▁of ▁the ▁ 2 0 th ▁century , ▁ 4 ▁and ▁ 6 - layer ▁che v ron ▁be ads ▁appear ▁on ▁various ▁sample ▁cards . ▁According ▁to ▁records ▁kept ▁at ▁the ▁Soci eta ▁Venez iana ▁Con ter ie ▁of ▁Mur ano , ▁they ▁stopped ▁making ▁che v ron ▁can es ▁during ▁the ▁ 1 9 5 0 s . ▁Che v ron ▁be ads ▁are ▁still ▁being ▁made ▁in ▁Ven ice ▁today , ▁al beit ▁in ▁very ▁small ▁quantities . ▁ ▁Che v ron ▁be ads ▁can ▁be ▁composed ▁of ▁a ▁varied ▁number ▁of ▁consecutive ▁layers ▁of ▁colored ▁glass es . ▁ ▁The ▁initial ▁core ▁is ▁formed ▁from ▁a ▁mol ten ▁ball ▁of ▁glass ▁( called ▁a ▁" g ather ") ▁that ▁was ▁m elt ed ▁in ▁a ▁furn ace . ▁If ▁the ▁glass worker ▁is ▁making ▁be ads