EX-VG hpht bilan ishlangan olmoslar yuqori bosimli yuqori haroratli olmos
Yuqori bosimli yuqori haroratli olmosning parametrlari
| Kod # | Baho | Karat Og'irligi | Aniqlik | Hajmi |
| 04A | A | 0,2-0,4 ct | VVS VS | 3,0-4,0 mm |
| 06A | A | 0,4-0,6 ct | VVS VS | 4,0-4,5 mm |
| 08A | A | 0,6-0,8 ct | VVS-SI1 | 4,0-5,0 mm |
| 08B | B | 0,6-0,8 ct | SI1-SI2 | 4,0-5,0 mm |
| 08C | C | 0,6-0,8 ct | SI2-I1 | 4,0-5,0 mm |
| 08D | D | 0,6-0,8 ct | I1-I3 | 4,0-5,0 mm |
| 10A | A | 0,8-1,0 ct | VVS-SI1 | 4,5-5,5 mm |
| 10B | B | 0,8-1,0 ct | SI1-SI2 | 4,5-5,5 mm |
| 10C | C | 0,8-1,0 ct | SI2-I1 | 4,5-5,5 mm |
| 10D | D | 0,8-1,0 ct | I1-I3 | 4,5-5,5 mm |
| 15A | A | 1,0-1,5 ct | VVS-SI1 | 5,0-6,0 mm |
| 15B | B | 1,0-1,5 ct | SI1-SI2 | 5,0-6,0 mm |
| 15C | C | 1,0-1,5 ct | SI2-I1 | 5,0-6,0 mm |
| 15D | D | 1,0-1,5 ct | I1-I3 | 5,0-6,0 mm |
| 20A | A | 1,5-2,0 ct | VVS-SI1 | 5,5-6,5 mm |
| 20B | B | 1,5-2,0 ct | SI1-SI2 | 5,5-6,5 mm |
| 20C | C | 1,5-2,0 ct | SI2-I1 | 5,5-6,5 mm |
| 20D | D | 1,5-2,0 ct | I1-I3 | 5,5-6,5 mm |
| 25A | A | 2,0-2,5 ct | VVS-SI1 | 6,5-7,5 mm |
| 25B | B | 2,0-2,5 ct | SI1-SI2 | 6,5-7,5 mm |
| 25C | C | 2,0-2,5 ct | SI2-I1 | 6,5-7,5 mm |
| 25D | D | 2,0-2,5 ct | I1-I3 | 6,5-7,5 mm |
| 30A | A | 2,5-3,0 ct | VVS-SI1 | 7,0-8,0 mm |
| 30B | B | 2,5-3,0 ct | SI1-SI2 | 7,0-8,0 mm |
| 30C | C | 2,5-3,0 ct | SI2-I1 | 7,0-8,0 mm |
| 30D | D | 2,5-3,0 ct | I1-I3 | 7,0-8,0 mm |
| 35A | A | 3,0-3,5 ct | VVS-SI1 | 7,0-8,5 mm |
| 35B | B | 3,0-3,5 ct | SI1-SI2 | 7,0-8,5 mm |
| 35C | C | 3,0-3,5 ct | SI2-I1 | 7,0-8,5 mm |
| 35D | D | 3,0-3,5 ct | I1-I3 | 7,0-8,5 mm |
| 40A | A | 3,5-4,0 ct | VVS-SI1 | 8,5-9,0 mm |
| 40B | B | 3,5-4,0 ct | SI1-SI2 | 8,5-9,0 mm |
| 40C | C | 3,5-4,0 ct | SI2-I1 | 8,5-9,0 mm |
| 40D | D | 3,5-4,0 ct | I1-I3 | 8,5-9,0 mm |
| 50A | A | 4,0-5,0 ct | VVS-SI1 | 7,5-9,5 mm |
| 50B | B | 4,0-5,0 ct | SI1-SI2 | 7,5-9,5 mm |
| 60A | A | 5,0-6,0 ct | VVS-SI1 | 8,5-10 mm |
| 60B | B | 5,0-6,0 ct | SI1-SI2 | 8,5-10 mm |
| 70A | A | 6,0-7,0 ct | VVS-SI1 | 9,0-10,5 mm |
| 70B | B | 6,0-7,0 ct | SI1-SI2 | 9,0-10,5 mm |
| 80A | A | 7,0-8,0 ct | VVS-SI1 | 9,0-11 mm |
| 80B | B | 7,0-8,0 ct | SI1-SI2 | 9,0-11 mm |
| 80+A | A | 8,0ct + | VVS-SI1 | 9 mm+ |
| 80+B | B | 8,0ct + | SI1-SI2 | 9 mm+ |
4C Yuqori bosimli yuqori haroratli olmos standarti
Rang
Yuqori bosimli yuqori haroratli olmos rangi standartlashtirilgan ko'rish muhitida baholanadi. Gemologlar neytral ko'rinishni osonlashtirish uchun olmos teskari joylashtirilgan holda, D dan Zgacha rang oralig'ida rangni tahlil qiladilar.
Aniqlik
Yuqori bosimli yuqori haroratli olmosning tiniqligini xalqaro miqyosda qabul qilingan standartlarga muvofiq 10X kattalashtirishda, ichki va sirt xususiyatlarining ko'rinishi, o'lchami, soni, joylashuvi va tabiatiga ko'ra baholanadi.
Kesish
Gemologlar umumiy nisbatlar, o'lchovlar va faset burchaklari hft bilan ishlov berilgan olmoslarning kesish darajasini aniqlash uchun yorqinlik, olov, sintilatsiya va naqshni o'rganish bilan solishtiriladi.
Karat og'irligi
Yuqori bosimli yuqori haroratli olmosni tasniflashning birinchi bosqichi olmosni tortishdir.Karat vazni qimmatbaho toshlar uchun standart og'irlik birligidir.To'g'riligini ta'minlash uchun olmosni ikki o'nli kasrgacha baholang.
