EX-VG hpht ilitibu almasi almasi yenye shinikizo la juu la joto
Vigezo vya almasi ya shinikizo la juu la joto
| Msimbo # | Daraja | Uzito wa Carat | Uwazi | Ukubwa |
| 04A | A | ct 0.2-0.4 | 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 | ct 0.8-1.0 | VVS-SI1 | 4.5-5.5mm |
| 10B | B | ct 0.8-1.0 | SI1-SI2 | 4.5-5.5mm |
| 10C | C | ct 0.8-1.0 | SI2-I1 | 4.5-5.5mm |
| 10D | D | ct 0.8-1.0 | 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 Kiwango cha almasi yenye shinikizo la juu la joto
Rangi
Rangi ya almasi yenye shinikizo la juu ya halijoto ya juu hupangwa katika mazingira sanifu ya utazamaji.Wataalamu wa madini huchanganua rangi katika safu ya rangi ya D hadi Z huku almasi ikiwekwa juu chini, kutazamwa kupitia ubavu, ili kuwezesha mwonekano wa upande wowote.
Uwazi
Hutathmini uwazi wa almasi yenye shinikizo la juu kulingana na viwango vinavyokubalika kimataifa katika ukuzaji wa 10X, kulingana na mwonekano, saizi, nambari, eneo na asili ya sifa za ndani na za uso katika ukuzaji huo.
Kata
Wataalamu wa madini kwa jumla uwiano, vipimo na pembe za sehemu hulinganishwa na tafiti za mwangaza, moto, ukoleaji na muundo ili kubainisha Daraja la Kata la almasi zilizotibiwa kwa hpht.
Uzito wa Carat
Hatua ya kwanza ya uwekaji alama wa almasi yenye shinikizo la juu ni kupima almasi.Uzito wa Carat ni kitengo cha uzito cha kawaida cha vito.Uwekaji alama wa almasi ni sehemu mbili za desimali ili kuhakikisha usahihi.
