4 carat shaybaar koray dheeman 3 carat 2 karat 1 carat cvd dheeman ah oo qiimahiisu yahay
Cabbirka Dheeman ee Shaybaadhka Koray
Karaatku waa halbeegga miisaanka dheemanka.Carat waxaa badanaa lagu wareersan yahay cabbirka inkastoo ay dhab ahaantii tahay cabbirka miisaanka.Hal carat waxay u dhigantaa 200 milligram ama 0.2 garaam.Miisaanka hoose wuxuu muujinayaa xiriirka cabbirka caadiga ah ee u dhexeeya dheeman ee kordhinta miisaanka carat.Xusuusnow in kasta oo cabbirada hoose ay yihiin kuwo caadi ah, dheeman kastaa waa mid gaar ah.
Dheemanka shaybaadhka ku koray waxa ay raacaan 4Cs isku mid ah (gooyn, midab, caddayn iyo culays carat) habka qiimaynta sida dheemanka dabiiciga ah.Hoos waxaa ku yaal dulmar kooban oo qayb kasta ah: 1. Jar: Waxa ay tilmaamaysaa saxnaanta iyo tayada dheemanka goyntiisa, oo ay ku jiraan cabbirkiisa, summaynta iyo midabaynta.Dheeman si fiican loo gooyay ayaa iftiinka si qurux badan u muujinaya, isaga oo ku daraya dhalaalkiisa.2. Midabka: Waxa loola jeedaa dherjinta midabka dheemanka, kaas oo u dhaxayn kara bilaa midab ilaa huruud, bunni, ama xataa casaan, buluug, ama cagaar.Midabka yar ee dheemanku leeyahay, waa ka qiimo badan yahay.3. Caddaynta: Waxa loola jeedaa joogitaanka ama maqnaanshaha wax kasta oo ka mid ah ku darista ama cilladaha dabiiciga ah ee ku jira dheemanka.Dheemannada leh caddaynta sare waxay leeyihiin ka mid ahaansho yar oo sidaas awgeed waxaa loo tixgeliyaa inay ka qiimo badan yihiin.4. Miisaanka Carat: waxaa loola jeedaa miisaanka dheeman, 1 carat wuxuu la mid yahay 0.2 garaam.Miisaanka carat-ka weyn, ayaa ka sii qiimo badan dheemanka.Si kastaba ha ahaatee, waa in la ogaadaa in dheemanka shaybaarka lagu beeray ay yeelan karaan waxyaabo kala duwan oo kala duwan iyo walxaha raadraaca marka la barbar dhigo dheemanka dabiiciga ah, taas oo saameyn karta sida loo qiimeeyo.Machadka Caalamiga ah ee Gemological (IGI) iyo Machadka Gemological ee Ameerika (GIA) ayaa sidoo kale bixiya warbixinnada qiimeynta dheeman-koray.
Midabka Dheeman ee Lab Koray: DEF
Midabku waa midabka dabiiciga ah ee lagu arki karo dheeman mana isbedelo waqti ka dib.Dheeman aan midab lahayn ayaa u oggolaanaya iftiin badan inuu dhex maro dheeman midab leh, oo sii daaya dhalaal badan iyo dab.Isagoo u dhaqmaya sidii prism, dheemanku wuxuu iftiinka u kala qaybiyaa midabyo kala duwan wuxuuna ka tarjumayaa iftiinkan sida nalal midab leh oo loo yaqaan dab.
Caddayn Dheeman Lab Koray: VVS-VS
Caddayn dheemantu waxa ay tilmaamaysaa joogitaanka wasakhda korkeeda iyo gudaha dhagaxa.Marka dhagax qallafsan laga soo saaro kaarboonka hoose ee dhulka hoostiisa, raadadka yaryar ee walxaha dabiiciga ah ayaa had iyo jeer ku xayiran gudaha waxaana loo yaqaannaa ka mid noqoshada.
Labka Koray Dheemanka Goynta: FIICAN
Goynta waxaa loola jeedaa xaglaha iyo saamiga dheeman.Goynta dheeman - qaabkeeda iyo dhamaystirkeeda, qoto dheer iyo ballaceeda, isku midka ah ee wejiyada - ayaa go'aamiya quruxdeeda.Xirfadda dheemanka lagu gooyo ayaa go'aamisa sida wanaagsan ee uu u iftiimayo iyo sida uu u leexiyo iftiinka.
Tilmaamaha Dheeman Laabka Koray
Koodhka # | Darajo | Miisaanka Carat | Caddayn | Cabbirka |
04A | A | 0.2-0.4ct | VVS VS | 3.0-4.0mm |
06A | A | 0.4-0.6ct | VVS VS | 4.0-4.5mm |
08A | A | 0.6-0.8ct | VVS-SI1 | 4.0-5.0mm |
08B | B | 0.6-0.8ct | SI1-SI2 | 4.0-5.0mm |
08C | C | 0.6-0.8ct | SI2-I1 | 4.0-5.0mm |
08D | D | 0.6-0.8ct | I1-I3 | 4.0-5.0mm |
10A | A | 0.8-1.0ct | VVS-SI1 | 4.5-5.5mm |
10B | B | 0.8-1.0ct | SI1-SI2 | 4.5-5.5mm |
10C | C | 0.8-1.0ct | SI2-I1 | 4.5-5.5mm |
10D | D | 0.8-1.0ct | I1-I3 | 4.5-5.5mm |
15A | A | 1.0-1.5ct | VVS-SI1 | 5.0-6.0mm |
15B | B | 1.0-1.5ct | SI1-SI2 | 5.0-6.0mm |
15C | C | 1.0-1.5ct | SI2-I1 | 5.0-6.0mm |
15D | D | 1.0-1.5ct | I1-I3 | 5.0-6.0mm |
20A | A | 1.5-2.0ct | VVS-SI1 | 5.5-6.5mm |
20B | B | 1.5-2.0ct | SI1-SI2 | 5.5-6.5mm |
20C | C | 1.5-2.0ct | SI2-I1 | 5.5-6.5mm |
20D | D | 1.5-2.0ct | I1-I3 | 5.5-6.5mm |
25A | A | 2.0-2.5ct | VVS-SI1 | 6.5-7.5mm |
25B | B | 2.0-2.5ct | SI1-SI2 | 6.5-7.5mm |
25C | C | 2.0-2.5ct | SI2-I1 | 6.5-7.5mm |
25D | D | 2.0-2.5ct | I1-I3 | 6.5-7.5mm |
30A | A | 2.5-3.0ct | VVS-SI1 | 7.0-8.0mm |
30B | B | 2.5-3.0ct | SI1-SI2 | 7.0-8.0mm |
30C | C | 2.5-3.0ct | SI2-I1 | 7.0-8.0mm |
30D | D | 2.5-3.0ct | I1-I3 | 7.0-8.0mm |
35A | A | 3.0-3.5ct | VVS-SI1 | 7.0-8.5mm |
35B | B | 3.0-3.5ct | SI1-SI2 | 7.0-8.5mm |
35C | C | 3.0-3.5ct | SI2-I1 | 7.0-8.5mm |
35D | D | 3.0-3.5ct | I1-I3 | 7.0-8.5mm |
40A | A | 3.5-4.0ct | VVS-SI1 | 8.5-9.0mm |
40B | B | 3.5-4.0ct | SI1-SI2 | 8.5-9.0mm |
40C | C | 3.5-4.0ct | SI2-I1 | 8.5-9.0mm |
40D | D | 3.5-4.0ct | I1-I3 | 8.5-9.0mm |
50A | A | 4.0-5.0ct | VVS-SI1 | 7.5-9.5mm |
50B | B | 4.0-5.0ct | SI1-SI2 | 7.5-9.5mm |
60A | A | 5.0-6.0ct | VVS-SI1 | 8.5-10mm |
60B | B | 5.0-6.0ct | SI1-SI2 | 8.5-10mm |
70A | A | 6.0-7.0ct | VVS-SI1 | 9.0-10.5mm |
70B | B | 6.0-7.0ct | SI1-SI2 | 9.0-10.5mm |
80A | A | 7.0-8.0ct | VVS-SI1 | 9.0-11mm |
80B | B | 7.0-8.0ct | SI1-SI2 | 9.0-11mm |
80+A | A | 8.0ct + | VVS-SI1 | 9mm+ |
80+B | B | 8.0ct + | SI1-SI2 | 9mm+ |