Irregular Hexagon Natural Nut Button

Txij li thaum xyoo pua 19th, cov neeg Italians tau hloov cov kaus ntxhw no rau hauv cov nyees khawm, uas yog siv nyob rau hauv lub ntiaj teb no tshwj xeeb tshaj plaws zam. Niaj hnub no, tib neeg tsis tsuas yog siv cov txiv hmab txiv ntoo tej yam yees siv no los ua cov khaub ncaws siab kawg nkaus xwb, tab sis kuj yog cov txiv hmab txiv ntoo nyuaj rau txhua yam khoom siv, chess pieces, suab paj nruag reed thiab lwm yam. Botanical ivory tau nrov heev hauv xyoo 1920 thiab 1930s. Kev lag luam txheeb cais qhia tau hais tias ntawm ib lub sijhawm, cov nyees khawm ua los ntawm botanical ivory suav txog 20 feem pua ​​​​ntawm kev ua lag luam, yog li nws yog ib qho ntawm cov khoom tseem ceeb ntawm lub sijhawm. " Nws tau maj mam hloov los ntawm cov yas, uas yog pheej yig dua los ua. yuav luag tsis nco qab, tsuas yog ob peb yam khoom plig me me tab sis tam sim no maj mam rov qab los.

A. Cov nqi raw khoom: qhov tseem ceeb tshaj plaws ntawm cov nqi ntawm cov txiv hmab txiv ntoo txiav.

Raws li ob tus yam ntxwv ntawm kev tiv thaiv ib puag ncig ntshiab thiab cov ntaub ntawv tsis tshua muaj, qhov kev ntsuam xyuas ntawm cov khoom muaj nqis ntau dua. Raws li ib feem tseem ceeb ntawm tus nqi, tus nqi ntawm cov khoom siv raw tau nce siab rau xyoo no, nrog kev nce ntxiv ntawm ntau dua 60%. Tsis tas li ntawd, lub voj voog kev txiav txim los ntawm thawj 90 hnub rau qhov kev txiav txim tam sim no mus rau qhov khoom xa tuaj dawb yuav ze li ib xyoos, tsis suav nrog lub sijhawm xa khoom. Nws qhov tsis txaus yog qhov pom tseeb dua.

B, -- seem

①. Vim cov yam ntxwv ntawm cov txiv hmab txiv ntoo buckle, xim sib txawv yog inevitable nyob rau hauv cov txheej txheem dyeing, ua rau cov khoom seem seem.

(2) Kuj tseem yuav muaj kev poob hauv cov txheej txheem ntawm cov cuab yeej hloov pauv thiab cov khoom ntws

C. Cov nqi tsim khoom (nrog rau cov nyiaj ncaj qha thiab cov nqi tsim khoom, thiab lwm yam)

D, -- Cov nuj nqis ib ntus (nrog rau cov nuj nqis tswj hwm, kev siv nyiaj txiag, nqi muag, thiab lwm yam)