Igi kuthibitishwa hpht maabara mzima almasi VS VVS Uwazi
Vigezo vya almasi iliyopandwa kwenye maabara ya hpht
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 zinazokuzwa katika maabara ya hpht
Rangi
rangi ya almasi iliyotibiwa kwa hpht imewekwa katika hali 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 zilizotibiwa 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 katika kuweka daraja la almasi iliyotibiwa kwa hpht 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.