Cov khoom

Semi-precious gemstones tuaj nyob rau hauv ntau yam xim, duab, thiab qhov ntau thiab tsawg, muab ntau yam kev xaiv rau cov hniav nyiaj hniav kub thiab cov hom phiaj zoo nkauj.Qee qhov piv txwv ntawm cov gemstones semi-precious muaj xws li amethyst, citrine, garnet, peridot, topaz, turquoise, thiab ntau ntxiv.Txhua lub pob zeb muaj nws tus kheej tshwj xeeb, xws li xim, hardness, thiab pob tshab, uas ua rau nws tus kheej zoo nkauj thiab xav tau.Ib qho ntawm qhov zoo ntawm semi-precious gemstones yog lawv cov khoom siv tau yooj yim thiab pheej yig.Muab piv rau cov gemstones muaj nuj nqis, semi-precious gemstones feem ntau yog yooj yim dua thiab tuaj ntawm tus nqi qis, lawv siv tau ntau yam ntawm cov neeg.Qhov kev pheej yig no tso cai rau cov tib neeg los ua tus tswv thiab txaus siab rau ntau yam gemstone cov hniav nyiaj hniav kub yam tsis tau tawg lub txhab nyiaj.