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a colourless glass composed of almost pure silica, resistant to very high temperatures and transparent to near-ultraviolet radiation, üle 99% ränidioksiidi SiO2 sisaldav klaas
kvartsilasi . EKI terminibaas Esterm. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//esterm/kvartsilasi/1/fin (20.06.2026)
