«21st Century Emerald Cut» by Jim Perkins — Схема дизайнерской огранки

Схема огранки "21st Century Emerald Cut" by Jim Perkins (2010)

Схема огранки «21st Century Emerald Cut» by Jim Perkins (2010)

 

Схема огранки 21st Century Emerald Cut» by Jim Perkins
for dark garnet & sapphire


Angles for R.I. = 1.800
41 + 8 girdles = 49 facets
2-fold, mirror-image symmetry
96 index
L/W = 1.250 T/W = 0.735 U/W = 0.491
P/W = 0.435 C/W = 0.158
Vol./W³ = 0.396


ПАВИЛЬОН (Pavilion)

P1 ··· 90.00° ··· 96-48 ··· SET WIDTH
P2 ··· 90.00° ··· 24-72 ··· SET LENGTH
P3 ··· 42.00° ··· 96-48 ··· CREATE A KEEL
P4 ··· 37.00° ··· 96-48 ··· STEP CUT
P5 ··· 47.00° ··· 96-48 ··· STEP CUT
P6 ··· 37.00° ··· 24-72 ··· MP@ P3 — P4
P7 ··· 42.00° ··· 24-72 ··· MP@ P3 — P5
P8 ··· 47.00° ··· 24-72 ··· MP@ P3 — P5
P9 ··· 42.00° ··· 12-36-60-84 ··· MP@ P7 — P8
P10 ··· 47.00° ··· 12-36-60-84 ··· MP@ P3 — P4
P11 ··· 90.00° ··· 12-36-60-84 ··· MP@ P1-P3 AND P2-P4

КОРОНА (Crown)

C1 ··· 48.40° ··· 96-48 ··· SET GIRDLE HEIGHT
C2 ··· 32.20° ··· 12-36-60-84 ··· SET GIRDLE HEIGHT
C3 ··· 41.00° ··· 24-72 ··· SET GIRDLE HEIGHT
C4 ··· 30.50° ··· 03-45-51-93 ··· Girdle Meet Point (G.M.P.)
C5 ··· 30.20° ··· 21-27-69-75 ··· Girdle Meet Point (G.M.P.)
C6 ··· 17.00° ··· 96-48 ··· MP@ C2 — C4 — C6 & C2 — C5 — C7
C7 ··· 19.30° ··· 24-72 ··· MP@ APEX OF C2
C8 ··· 0.00° ··· Table ··· MP@ C2 — C4 — C6 & C2 — C5 — C7

Диаграмма огранки для скачивания в формате PDF: 21ST-CENTURY-EMERALD-CUT.PDF


Примеры работ в огранке «21st Century Emerald Cut»: Галерея работ


 

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