Daoimeanan air a làimhseachadh le EX-VG hpht daoimean àrd-bhrùthadh teòthachd àrd
Paramadairean daoimean àrd-bhrùthadh teòthachd àrd
| Còd # | Ìre | Cuideam Carat | Soilleireachd | Meud |
| 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+ |
4C Inbhe daoimean àrd-bhrùthadh teòthachd àrd
Dath
Tha dath daoimean le cuideam àrd aig teòthachd àrd air a rangachadh ann an àrainneachd seallaidh àbhaisteach.
Soilleireachd
Ìrean soilleireachd daoimean àrd-bhrùthadh teòthachd àrd a rèir inbhean ris an deach gabhail gu h-eadar-nàiseanta aig meudachadh 10X, a rèir faicsinneachd, meud, àireamh, àite agus nàdar feartan a-staigh agus uachdar aig an àrdachadh sin.
Gearr
Bithear a’ dèanamh coimeas eadar cuibhreannan iomlan gemologists, tomhasan agus ceàrnan aghaidh le sgrùdaidhean air soilleireachd, teine, spealadh agus pàtran gus an ìre gearraidh de na daoimeanan air an làimhseachadh le hpht a dhearbhadh.
Carat cuideam
Is e a’ chiad ìre ann an rangachadh daoimean àrd-teòthachd cuideam an daoimean.Is e cuideam carat an aonad cuideam àbhaisteach airson leacan-uaighe.Tha rangachadh daoimean gu dà ionad deicheach gus dèanamh cinnteach à cruinneas.
