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Voted one of the 12 best of 2000 by Columbis-Willamette Faceters' Guild
| Pin wheel - designed by Jeff R. Graham jeff@faceters.com ©1998 | |
|---|---|
| Angles for R.I. = 1.62 | 49 facets + 12 facets on girdle = 61 |
| 6-fold, mirror-image symmetry | 96 index |
|
L/W = 1.036 T/W = 0.593 T/L = 0.573 H/W = 0.617 |
|
| Vol./W^3 = 0.215 | Brightness at 0 degrees tilt for R.I. = 1.62 85% Light Return |
| Pavilion | |||
|---|---|---|---|
| P1 | 52.00 |
06-10-22-26-38-42-54-58-70-74-86-90 |
Cut to center point. |
| P2(G) | 90.00 | 03-13-19-29-35-45-51-61-67-77-83-93 | Cut girdle, meets on zigzag. |
| P3 | 43.00 | 06-22-38-54-70-86 | Cut to center point, meet girdle |
| P4 | 42.75 | 08-24-40-56-72-88 | Cut to meet P3. |
| P5 | 41.00 | 05-21-37-53-69-85 | Cut to center point, meet P1, P3. |
| Crown | |||
|---|---|---|---|
| C1 | 38.00 |
96-16-32-48-64-80 |
Cut in to form V-girdle. |
| C2 | 32.23 | 01-17-33-49-65-81 | Cut to meet girdle. |
| C3 | 24.77 | 96-16-32-48-64-80 | Cut to meet C1,C2. |
| T | 0.00 | Table | Table Cut to meet C2,C3. |
Pin Wheel - Cutting Remarks
Shown at left is a 9.5x 6.3mm deep ~ 2.88 carat "Pin wheel" cut from Rose Quartz. This material is nice color but a little on the silky side. The pictures look a little fuzzy because of this. The silk caused some interesting color and dispersion when the stone was photographed. The blades of the "Pin Wheel" show pretty well...
Remember those pin wheel toys we all played with as children? I wanted to design a cut that looks like a pin wheel and has a flash like it. This is what I came up with... This is easier than it looks. The girdle and P1 form a zigzag, and the tiers are every other one for meets, when you cut it you will see what I mean. It makes a very nice, interesting stone, 1-16cts. This works well in man-made Sapphire, Spinel and YAG... If you cut this in a lower refractive index (like Quartz) the blade pattern tends to be more pronounced.
Enjoy cutting your "Pin Wheel"... Drop me an email to let me know your results and what you've cut, or feel free to inquire if you have any questions or need some help regarding this design.
Random - Cosine - ISO
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