Igi sertifikatlangan hpht laboratoriyasida yetishtirilgan olmos VS VVS Clarity
hpht laboratoriyasida yetishtirilgan olmos 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 hpht laboratoriyasida yetishtirilgan olmos standarti
Rang
hpht bilan ishlov berilgan 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
Xalqaro miqyosda qabul qilingan standartlarga muvofiq hpht bilan ishlov berilgan olmoslarning ravshanligi 10X kattalashtirishda, bu kattalashtirishda ichki va sirt xususiyatlarining ko'rinishi, o'lchami, soni, joylashuvi va tabiatiga ko'ra.
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
Hpht bilan ishlangan olmoslarni 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.
