Pob zeb diamond tus nqi - Yuav ua li cas yog pob zeb diamond muaj nuj nqis?

Tus nqi ntawm cov pob zeb diamond yog txiav txim siab los ntawm: kev coj noj coj ua ntau pua xyoo, kev nyiam nyiam kev coj noj coj ua thiab kev hloov pauv tsis tu ncua thiab zam zam. Lub gemstone tseem muaj nuj nqis rau qhov txawv tshaj plaw ntawm pob zeb diamond thiab nws qhov tseem ceeb tsis kam tiv thaiv cov tshuaj lom neeg thiab thermal yam. Yog hais tias peb kuj coj mus rau hauv tus account qhov tshwj xeeb rarity thiab fascinating kev zoo nkauj ntawm faceted pob zeb, nws yog ib qho yooj yim to taub yog vim li cas pob zeb diamond hu ua precious pob zeb. 

Rough diamonds thiab lawv cov nqi

Tom qab privatization ntawm De Beers nyob rau hauv 2001, lub tuam txhab, raws li ib feem ntawm nws pricing txoj cai, txiav txim siab tsis qhia tus nqi rau ntxhib pob zeb diamond muag los ntawm Diamond Trading Co. Txawm li cas los xij, ib tsab ntawv tshaj tawm los ntawm Bonas-Couzyn Ltd., kev lag luam pob zeb diamond ntxhib thiab kev tshawb fawb brokerage thiab pom ntawm De Beers, qhia tau hais tias tus nqi ntawm cov pob zeb diamond ntxhib tau nce ntau dua 2009% txij li lub Tsib Hlis 25. (Table 1). Qhov kev nce no feem ntau yog vim qhov zoo sawn 1 thiab dodecahedral crystals (sawing 2) thiab chips. Txij li cov nqi polished tsis tau nce vim muaj kev kub ntxhov thoob ntiaj teb thiab kev muag khoom los ntawm lub tsev khaws khoom, peb tuaj yeem cia siab tias yuav nce ntxiv ntawm tus nqi ntawm polished pob zeb diamond los ntawm kev yuav khoom tshiab.

Antwerp Pob Zeb Diamond Index

Qhov Performance index, tsim los ntawm Higher Pob Zeb Diamond Council (HRD), qhia tau hais tias qhov kev hloov nyob rau hauv nruab nrab nqi rau pob zeb diamond - 0,50-1,00 carats, clarity los ntawm magnified clarity (LC) rau VS2 thiab cov xim ntawm lub purest dawb. (E) dawb (H) - nyob rau hauv lub lag luam Antwerp (Belgium). Cov ntaub ntawv luam tawm qhia tias nyob nruab nrab ntawm 1973 thiab 2008 (noj 1973 li 100%), tus nqi rau 0,50 carat pob zeb diamond tau nce ntau dua 165%, thiab cov nqi rau 1,00 carat pob zeb diamond tau nce ntau dua 270%. Tus nqi siab tshaj plaws rau polished pob zeb diamond tau mus txog 1980% thiab 402,8% raws li hauv 636,9, thiab tom qab ntawd txog xyoo 1985 lawv tau txo qis rau 182,6% thiab 166,0% raws li. Cov nqi pob zeb diamond tau nce qeeb tab sis tsis tu ncua txij li xyoo 1985 (table 2, graph 1).

Keeb kwm kev loj hlob tiam sis hauv cov nqi pob zeb diamond

Cov nqi hauv Teb Chaws Asmeskas las rau cov pob zeb zoo nkauj ntawm 1,00-1,39 carats, loupe clarity (LC) thiab purest whiteness (D) tau nce li ntawm 1960% ntawm 2010 thiab 840 (Daim duab 2). Yog vim li cas rau qhov nce siab ntawm cov nqi yog qhov tsis muaj cov khoom siv raw, vim tias tsuas yog li 750 pob zeb diamond ntawm qhov zoo no tau tsim txhua xyoo. Nyob rau hauv lem, kom tau txais xws li ib tug me me pob zeb, lub extraction ntawm kwv yees li 800 tons ntawm kimberlite yog yuav tsum tau. Gareth Penny ntawm De Beers tau hais hauv kev xam phaj hauv xyoo 000 tias kev tsim khoom txuas ntxiv ntawm cov theem saum toj no tuaj yeem ua rau kev ua tiav ntawm cov nyiaj tso cia uas tsim cov pob zeb zoo nkauj hauv 000 xyoo tom ntej. Raws li kev txheeb xyuas ntawm Antwerp Center rau Kev Lag Luam Ntiaj Teb hauv Pob Zeb Diamond (Belgium), tus nqi rau cov pob zeb diamond polished tau nce txhua xyoo los ntawm 2010% hauv 20-1949. Nyob rau hauv lub xyoo caum tom ntej, los ntawm 1960 mus rau 15, tus nqi nce piv rau xyoo dhau los yog raws li nram no:

• Xyoo 1960-1970 - 155% yog ';
• Xyoo 1970-1980 - 52% yog ';
• Xyoo 1980-1990 - 32% yog ';
• Xyoo 1990-2000 - 9% yog ';
• Xyoo 2000-2010 - 68%.

  Nyob rau hauv lub xyoo tom ntej no, ib tug tseem ceeb nce nyob rau hauv tus nqi ntawm high-zoo pob zeb diamond yuav tsum tau cia siab rau ob peb lub laj thawj: 1) lub ntiaj teb no kev lag luam yog rov qab los yog los ntawm kev lag luam ntsoog, feem ntau yog Asmeskas kev lag luam, lub ntiaj teb loj tshaj plaws pob zeb diamond noj (ntau tshaj 50%); 2) muaj qhov tsis txaus ntawm cov khoom siv raw khoom zoo thiab tus nqi rau nws loj hlob tas li; 3) pob zeb diamond deposits maj mam depleted, thiab lub neej xav tau ntawm cov mines underground twb teem rau 2020; 4) Kev thov rau polished pob zeb diamond yog loj hlob sai hauv cov lag luam Esxias tshiab (Tuam Tshoj, Kauslim Teb, Taiwan).

Txheeb xyuas qhov xav paub - pob zeb diamond loj tshaj plaws hauv ntiaj teb!