ɪn fɹˈæns, ðə tˈɜːm "ˈoʊpəlˌaɪn" ɪz jˈuːzd tə ɹᵻfˈɜː tə mˌʌltɪpəl tˈaɪps ʌv ɡlˈæs, ænd nˌɑːt spəsˈɪfɪkli æntˈiːk kˈʌlɚd kɹˈɪstəl ɔːɹ sˈɛmaɪkɹˈɪstəl, ˌæzˌɪz kˈɑːmənli θˈɔːt, wɪð ˈoʊpəlˌaɪn ˈɔfən ɐ mɪstˈeɪkənliɡˈɪvən tˈɜːm ɹᵻfˈɜːɹɪŋ tə ðə kˈʌlɚɹ əvə pɚtˈɪkjʊlɚ tˈaɪp ʌv ɡlˈæs, ɹˈæðɚ ðɐn ðɪ ˈeɪdʒ, ˈɔːɹɪdʒˌɪn ɔːɹ kˈɑːntɛnt ʌvðə ɡlˈæs.
In France, the term "opaline" is used to refer to multiple types of glass, and not specifically antique colored crystal or semi-crystal, as is commonly thought, with 'opaline' often a mistakenly-given term referring to the color of a particular type of glass, rather than the age, origin or content of the glass.