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Lydia's Barion
Lydia's Barion
Designed by Bob Keller bkeller@rockhounds.com Copyright 2000Angles for R.I. = 1.54 157 facets + 24 facets on girdle = 181 4-fold, mirror-image symmetry 96 index L/W = 1.000 T/W = 0.598 T/L = 0.598 P/W = 0.530 C/W = 0.150 H/W = (P+C)/W+0.02 = 0.700 P/H = 0.757 C/H = 0.214 Vol./W^3 = 0.291 Brightness at 0 degrees tilt for RI = 1.54
COS = 65.6 ISO = 69.4
Pavilion for Light to Medium Color Quartz 1 42.70 02-06-10-14-18-22-26-30-34-38-42-46-
50-54-58-62-66-70-74-78-82-86-90-94Cut to center point G2 90.00 05-19-29-43-53-67-77-91 Match 1, establish size G3 90.00 03-21-27-45-51-69-75-93 Meet G1,1 G4 90.00 01-23-25-47-49-71-73-95 Meet G2,1 5 65.00 05-19-29-43-53-67-77-91 Meet 1,G2, make level girdle 6 65.76 03-21-27-45-51-69-75-93 Meet G1,G2,5 7 66.13 01-23-25-47-49-71-73-95 Meet G2,G3,6 8 42.00 04-20-28-44-52-68-76-92 Meet 1,6,7 - culet 9 42.14 12-36-60-84 Meet G2,5 - 1,8 - culet Crown A 50.00 05-19-29-43-53-67-77-91 Match G2 establish upper girdle line B 50.00 03-21-27-45-51-69-75-93 Meet G2,G3,A C 50.00 01-23-25-47-49-71-73-95 Meet G3,G4,B D 40.00 05-19-29-43-53-67-77-91 Match A E 40.00 03-21-27-45-51-69-75-93 Meet A,B,D F 40.00 01-23-25-47-49-71-73-95 Meet B,C,E G 30.00 05-19-29-43-53-67-77-91 Match D H 30.00 03-21-27-45-51-69-75-93 Meet D,E,G I 30.00 01-23-25-47-49-71-73-95 Meet E,F,H J 20.00 05-19-29-43-53-67-77-91 Match G K 20.00 03-21-27-45-51-69-75-93 Meet G,H,J L 20.00 01-23-25-47-49-71-73-95 Meet H,I,K T 0.00 Table
GemCad Ray Traces for RI = 1.54 Random Model Cosine Model ISO Model
Angles for R.I. = 1.63 157 facets + 24 facets on girdle = 181 4-fold, mirror-image symmetry 96 index L/W = 1.000 T/W = 0.598 T/L = 0.598 P/W = 0.511 C/W = 0.150 H/W = (P+C)/W+0.02 = 0.681 P/H = 0.751 C/H = 0.220 Vol./W^3 = 0.291 Brightness at 0 degrees tilt for RI = 1.63
COS = 78.0 ISO = 83.3
Pavilion for Light to Medium Color Topaz / Tourmaline 1 41.70 02-06-10-14-18-22-26-30-34-38-42-46-
50-54-58-62-66-70-74-78-82-86-90-94Cut to center point G2 90.00 05-19-29-43-53-67-77-91 Match 1, establish size G3 90.00 03-21-27-45-51-69-75-93 Meet G1,1 G4 90.00 01-23-25-47-49-71-73-95 Meet G2,1 5 64.22 05-19-29-43-53-67-77-91 Meet 1,G2, make level girdle 6 65.00 03-21-27-45-51-69-75-93 Meet G1,G2,5 7 65.38 01-23-25-47-49-71-73-95 Meet G2,G3,6 8 41.00 04-20-28-44-52-68-76-92 Meet 1,6,7 - culet 9 41.13 12-36-60-84 Meet G2,5 - 1,8 - culet
GemCad Ray Traces for RI = 1.63 Random Model Cosine Model ISO Model
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