Los ntawm kev pom kev, kev tsim ntawm ob qho tib si ntuj thiab hluavtaws muaju yog nyob ntawm qhov kub thiab txias. Ntuj muaju crystallize maj mam sib sib zog nqus hauv av nyob rau hauv kub thiab siab, thaum hluavtaws muaju nyob rau hauv ceev ceev crystallization los ntawm kev tswj tsis xws li kub, concentration, thiab pH. Cov txheej txheem tswj tau crystallization no tso cai rau cov khoom siv hluavtaws kom ua tiav cov qauv siab dua hauv purity, transparency, thiab loj.
Nyob rau hauv cov nqe lus ntawm daim ntawv thov, siv lead ua blocks yog dav siv vim lawv lub cev thiab tshuaj lom neeg lub zog. Nyob rau hauv kev lag luam hniav nyiaj hniav kub, siv lead ua blocks raug txiav mus rau hauv gemstones ntawm ntau yam duab thiab ntau thiab tsawg los ua necklaces, bracelets, tsej, thiab lwm yam hniav nyiaj hniav kub; lawv ci ntsa iab luster thiab ntau yam xim yog nrov heev nrog cov neeg siv khoom. Nyob rau hauv kev lag luam sector, siv lead ua blocks yog siv los tsim cov cuab yeej kho qhov muag, cov khoom siv hluav taws xob, thiab cov khoom siv hluav taws xob zoo vim lawv qhov siab hardness thiab lub teeb kis tau zoo. Tsis tas li ntawd, cov pob zeb siv lead ua kuj tau siv hauv kev tsim cov thoob dej yug ntses, ntxiv qhov kov ntawm qhov thiab paub tsis meej rau cov thoob dej yug ntses.
