<prompt> Bhala okuqhubekayo kwalesi sigaba - Umbono wokuqala wempahla yemali wahlongozwa nguV. L. Yanin. Usosayensi wathi indima yemali yokukhokha okuncane ingafezwa yimikhiqizo ethile efanayo futhi esakazeke kakhulu eRussia Yasendulo - njengobuhlalu be-crystal ne-cornelian, ngokuvamile obuphawulwe ezinqolobaneni zemali, izibambo zengilazi ezinemibala ehlukahlukene, kanye ne-ovruch slate spindle whorls. Lezi zinsimbi zazitholakala ngokuphindaphindiwe ziqoqwe kanye nezinsimbi, futhi ngesikhathi kuvubukulwa ePskov, ngokwesibonelo, zatholakala esikhwameni semali esinemali yaseNtshonalanga Yurophu. Lapho u-V. L. Yanin ehlanganisa amabalazwe wokusabalalisa izibambo zengilazi kanye ne-slate spindles whorls, futhi wabuye waveza imingcele yendawo yokujikeleza kwemali ngaphambi kokuhlasela kwamaMongol  <response>: , ukuqondana kwazo okuningiliziwe kwatholakala. Umcibisholo we-slate spindle ungaba uhlamvu lwemali. Kwakungenakwenzeka ukuzenzisa, ngoba idiphozi ye-pink slate e-Ovruch kwakuwukuphela kwayo eMpumalanga Yurophu. EChina, ngokwenye yezinguqulo, i-spindle yaba uhlobo lokuqala lwezinhlamvu zemali ezinembobo eyisikwele. 