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I-Koroit opals wuhlobo lwamatshe ayigugu aziwa ngamaphethini awo ayingqayizivele nemibala egqamile. Zivame ukusetshenziselwa ubucwebe futhi zifunwa kakhulu ngabaqoqi. Uma unentshisekelo yokwengeza i-opal ye-Koroit eqoqweni lakho, ungase uzibuze ukuthi la matshe atholakala kuphi.
I-Koroit opals itholakala esifundeni saseKoroit eQueensland, e-Australia. Lesi sifunda siseningizimu-ntshonalanga yesifunda, cishe amakhilomitha angu-30 ukusuka edolobheni laseWarwick. Isifunda saseKoroit saziwa ngamadiphozithi aso acebile ama-opals, asembiwe iminyaka engaphezu kwekhulu.
Kunezimayini ezimbalwa esifundeni saseKoroit ezikhiqiza ama-opals ekhwalithi ephezulu. Lezi zimayini zisetshenziswa yizinkampani ezincane nezinkulu, futhi zisebenzisa amasu ahlukahlukene ukuze zikhiphe ama-opal emhlabeni. Inqubo ye-opals yezimayini ingaba yinkimbinkimbi, futhi idinga abasebenzi abanekhono ukuqinisekisa ukuthi amatshe akhishwa ngokuphepha nangempumelelo.
Ngaphezu kwezimayini esifundeni saseKoroit, ama-opals angatholakala nakwezinye izingxenye ze-Australia, kanye nakwamanye amazwe emhlabeni jikelele. Amanye amazwe akhiqiza ama-opals ahlanganisa i-Ethiopia, iMexico, kanye ne- I-united states.
Sekukonke, isifunda saseKoroit eQueensland sithathwa njengenye yezindawo eziphambili zokuthola ama-opals ekhwalithi ephezulu. Uma unesithakazelo ekuqoqeni lawa matshe ayigugu amahle, i-opal ye-Koroit kufanele nakanjani icatshangwe.