925 gumhpraw ngu ai gaw, mawn sumli ai shaloi 7.5% magri bang da ai gumhpraw hpe tsun mayu ai. Ndai alloy hta gumhpraw 92.5% hte magri 7.5% lawm nna, mungkan ting hta standard gumhpraw ngu nna, UK mungdan hta Sterling gumhpraw ngu nna chye ma ai.
Gumhpraw asan sha
925 gumhpraw hpe hpraw ai rhodium (dai hpe hpaga lam hta platinum ngu shamying ai) hte chya da ai gaw, gumhpraw a oxidation (sh) sulfidation a majaw hpraw mat ai hte hpraw mat ai hpe shayawm kau lu na matu. 925 platinum n bang ai gumhpraw hpe hpaga lam hta "plain silver" ngu nna tsun ma ai, hpa majaw nga yang, gumhpraw gaw grau nna oxidize aisilyr galaw ai majaw re.
Thai Gumhpraw
Thailand mungdan a laklai ai lam langai rai nna, 925 gumhpraw n-gun rawng ai madang hpe mung hkan sa ai. Htunghking gumhpraw blueing ladat hpe lang nna lata hte galaw ai ndai gumhpraw mawn sumli ai gaw grai ja ai hte n kaja ai lam hpe ninghkap lu ai. Shingra tara lung seng ni, semi-manu dan ai lung seng ni, dusat ni a n-gup, n-gup, n-gup n-gang ni hte shinggrup da ai ndai lung seng ni gaw, maigan htunghking hpe ngang kang ai hku hkam sha lu ai. Madung hku nna, jak-made gumhpraw mawn sumli ai arai ni hta manu grau tsaw ai raitim, langai hkrai hte laklai ai hpe tam ai mari ai ni gaw, shanhte hpe naw ra sharawng nga ma ai. Hairpin hte clip ni hpe dut ai mawn sumli ai nta kaji law law hta mung, Zhejiang hte kaga ginra ni kaw na, Thai gumhpraw (sh) Tibet gumhpraw ngu nna mung shamying ai, shingdaw ai, asak kaba sai synthetic metal amyu langai hpe dut nga ai. Ndai gaw teng sha nga yang, Tibet (sh) Thai gumhpraw tengman ai n re ai sha, lead-tin-hpyen n-gun rawng ai n-gang langai sha rai nga ai.
Ndai hpaga lam hta, Thai gumhpraw ngu ai gaw, Thailand mungdan kaw galaw shapraw ai gumhpraw n law htum 92.5% lawm ai gumhpraw mawn sumli ai hpe tsun mayu ai re.
Miao Gumhpraw
Miao amyu ni gaw gumhpraw mawn sumli ai hpe ra sharawng ai htunghking hpung langai mi re. Gumhpraw mawn sumli ai arai ni hpe Miao ni grai ra sharawng ai rai nna, madung hku nna num ni hpe mawn sumli na matu lang ma ai. Gumhpraw mawn sumli ai arai ni gaw amyu myu rai nna, baw kaw nna lagaw du hkra shara shagu hta mu lu ai, bawnu shingkyit, shingkyit shingkyit, lahpa shingkyit, lahput shingkyit, lata shingkyit, lagaw shingkyit ni lawm ai. Ndai mawn sumli ai arai ni gaw langai hte langai hpe madi shadaw ya nna, hkum tsup ai mawn sumli ai lam yawng hpe shabyin ya lu ai. Miao amyu ni hta, shayi sha langai shangai wa ai shaloi, kanu kawa ni gaw shi a matu hkungran kumhpa hpe lajang hpang wa nna, dai hkungran kumhpa gaw gumhpraw mawn sumli ai arai ni lawm ai.
Labau hta ka da ai hku nga yang, Miao gumhpraw mawn sumli ai lam gaw, Ming hkawhkam prat hta Guizhou a sinpraw dingda daw kaw nna rawt jat wa nna, Miao amyu ni a laklai ai htunghking masa langai byin tai wa sai. Sinpraw Dingda Guizhou de sa du ai ni gaw, manang ni hte dinghku masha ni hpe kumhpa hku nna Miao gumhpraw mawn sumli ai arai nkau mi hpe mari la chye ma ai. Miao gumhpraw mawn sumli ai arai ni hpe kaga alloy (copper zawn re ai) hte 99% gumhpraw hpe bang nna galaw ai. Gumhpraw n-gun gaw 15% hta n-pu kaw sha nga ai. Gat kaw dut shabra ai Miao gumhpraw hta gumhpraw rawng ai lam gaw shayawm wa nga ai, Miao gumhpraw shingkyit langai hpe Yuan loi mi sha manu dan ai rai nna, Yuan 50 daram sha dut shabra nga ai.
Tibet gumhpraw
Madung hku nna gumhpraw n lawm ai, hpraw ai magri (a copper-nickel alloy) a matu fancy mying langai mi re. Htunghking hku yu yang, Tibet gumhpraw hta gumhpraw 30%, magri 70% lawm ai. Raitim, ndai htunghking hku galaw ai "Tibetan gumhpraw" hpe pyi, gat lawk hta n mai mari mat sai, law malawng gaw, hpraw ai magri hte sha galaw shapraw ai rai nga ai.
Kaga nlung ni kaw na galaw nna, mari ai ni hpe hkalem na matu gumhpraw n-gun sha bang da ai gumhpraw masu hpe, jewelry appraisal gaw ntsa lam hpe sha jep yu ai majaw, 999 (sh) 925 gumhpraw ngu nna loi loi hte shut chye ai. Hpa majaw nga yang, jewelry appraisal gaw ntsa lam hpe sha jep yu ai majaw, 999 (sh) 925 gumhpraw hpe n-gun n rawng ai hku shinggrup da ai majaw, jewelry hpe 999 (sh) 925 gumhpraw ngu nna loi loi hte shut chye ai. Gumhpraw mawn sumli ai arai ni hpe jep yu ai shaloi, htuk manu dik ai ladat gaw, gumhpraw mawn sumli ai arai a daw langai hpe lapran kaw nna gang je kau nna, kata daw hpe chyam yu na matu hpaji jaw da ai.
