Gumhpraw ngu ai chemical element silver (Ag) hte hpawng de da ai manu dan ai nhprang rai rai nna, san seng ai hpraw nsam hte n-gun ja ai nhprang nsam rawng ai. Chemical hku nna n-gun n rawng ai raitim, sulfur hte loi loi sha kayau nna gumhpraw sulfide byin wa ai majaw, gumhpraw htinggaw a ntsa hpe nsam galai mat nna, nsam galai mat chye ai. Shi a shadawn shadang gaw 10.49 re. Shi a ngang kang ai lam gaw 2.5-3 re. Shi a hka lim ai shara gaw 961.93℃re. Dai gaw grai ductile (ja hpang lahkawng ngu na) rai nna, katsi ai hte wan n-gun hpe atsawm sha htawt sit lu ai. Gumhpraw gaw, mawn sumli ai bungli hta lang ai nlung rai tim, grai n-gun ja ai majaw, kaga n-gun (copper, zinc, nickel zawn re ai) ni hte kayau kaya galaw chye ai. Standard gumhpraw hta gumhpraw 92.5% lawm ai. Ndai prat hta, gumhpraw hpe nsin sin mat nna, htoi tu ai hpe sum mat chye ai majaw, ja hte platinum hta manu grai yawm ai majaw, manu n dan ai mawn sumli ai arai ni hta jai lang chye ma ai. Gumhpraw gaw, electronic arung arai ni hta grai kaja ai conductivity hte, hkrak tup hkrak re ai jak amyu myu a matu jai lang ai jak ni zawn re ai, hpaga lam hta mung jai lang mai ai lam law law nga ai.
925 sterling gumhpraw gaw gumhpraw mawn sumli ai lam hta mungkan ting na madang rai nga ai. [Madung: Lahta na gaw garan nna, n seng ai daw langai zawn rai nga ai:] Gumhpraw mawn sumli ai arai ni hpe, madung hku nna, "Sterling" ("S" shing nrai "Sterling") ngu ai ga si kadun hpe ka da ai. Sterling gumhpraw hpe S925 ngu masat da ai. Gumhpraw kaja hpe S990 ngu masat da ai. Raitim, mungdan law law gaw gumhpraw mawn sumli ai arai ni hpe ndai masat kumla n bang ma ai.
Kaga hpraw ai manu dan ai nlung dazik ni:
Platinum, Pt (Pt850/900/950/990/999) ngu masat da ai.
Platinum: Ja hpraw, madung hku nna ja hte galaw da ai.
Gumhpraw: Chemical masat kumla Ag (Latin ga Argentum kaw na Arg- gaw Indo-Europe ga hku nsam hpraw hte nsam htoi tu ai hpe madi madun ai npawt nhpang langai mi re). Atomic nambat 47, dai gaw galai shai ai nlung langai mi re. Gumhpraw gaw shingra tara hta shi a lawt lu ai hkrang hta grai n law ai hku byin pru wa ai, madung hku nna gumhpraw hpawng de ai lung seng ni hku nna byin pru wa ai. Gumhpraw gaw chemical hku nna n-gun n rawng ai, n-gun n law ai, manu dan ai. Raitim, nbung hte wan n-gun hpe grai kaja hkra shalai ya lu ai, tsi mawan ni a majaw loi loi hte n hkrat sum ai, n-gun n rawng ai hte n-gun n rawng ai.
