Agakomo Isoko y'ibanze y'ibitekerezo kuri aka gakomo yabaye gusubiza agaciro ibikoresho bidafite agaciro. Guhuranya icyuma cyagiye umukara na zahabu, ifeza n'amabuye y'agaciro ntabwo byongera gusa ubwiza bw'ibyo bikoresho mu buryo buzuzanya ahubwo bikabyara isano nshya. Aka gakomo kari kafite ubutumwa runaka. Ikusanyirizo Ryihariye rivuga ku gihe kirashira. Ibintu byose bizasenyuka ariko urabona kandi ibyo ibihe bya geologiya ku isi bishobora kubyara, ibuye rya boulder opal ryerekana ibyo. Ibikoresho bitandukanye biha ikintu ishingiro rifatanye bityo imbaraga z'igutekereza ntabwo zizakwibasirwa na gato.

Izina ry'umushinga : Private Collection, Izina ryabashushanya : Petra Boehler, Izina ry'abakiriya : Petra Boehler.

Soma ibiganiro biheruka n'ibiganiro kubijyanye no gushushanya, guhanga no guhanga udushya hagati yumunyamakuru wubushakashatsi hamwe nabashushanyo bazwi kwisi yose, abahanzi nabubatsi. Reba ibishushanyo mbonera bigezweho hamwe n'ibihembo byatsindiye ibihembo byabashushanyo bazwi, abahanzi, abubatsi n'abashya. Menya ubushishozi bushya kubijyanye no guhanga, guhanga udushya, ubuhanzi, igishushanyo mbonera. Wige ibijyanye nigishushanyo mbonera cyibishushanyo mbonera.