|
|
|
|
| ||
Diamond Jewelry Forums
 Picture Gallery
 Video Gallery
 Journal
|
|||
|
|  Search
|  Posted Today
|  Most Active
|  Help
|
||
 »
Home
»  » Diamond Prices and Grading »
 » Colored Stones
»  » How to set pyramid cuts?
|
|
 |
How to set pyramid cuts? |
 |
| P: 8/30/2005 1:48:59 PM | |
Cave Keeper Cut Rock Total Posts: 264 Last Post: 9/23/2005 Member Since: 6/30/2004 |
Does anyone have any ideas on how dark sapphires cut in shapes similar to a pyramid can be set? There's one 2 carat stone described as triangular cabochon, and there's another one just over half a carat that is a 3-sided pyramid with very rounded corners and apex described as pear shape. This kind of shape strikes me as a kind of cut that seems to ignore the main reason (the theory of which I confess I'm not well versed in, in the first place) why the brilliant cut was invented.
Thunder Storm Maker (Grand Master), creating havoc in the Heavens when active. Otherwise just a lazy Cave Keeper, sleeping on a huge pile of tiny glittery rocks, small dazzling stones and big sparkling pebbles. |
| Posted: 8/30/2005 1:48:59 PM | |
|
There are 2 replies to this message. There are 2 replies on this page. |
|
| P: 8/30/2005 2:30:21 PM | |
Michael_E Cut Rock Total Posts: 331 Last Post: 11/24/2009 Member Since: 11/19/2003 |
Cave Keeper, A clear gem with a three sided pavilion will form what is called a "retro reflector" if the facets are cut at just the right angles. One of the neat things about this is that, over a certain band of entrance angles any light ray entering this will be reflected back at the same angle and direction that it entered from, (although not along the same path). You can make all sorts of cool gems using this idea, but they are kind of hard to set. I've got a pale citrine that I cut to another persons design, (can't remember who designed it), using a sort of geodesic dome crown and a retroreflector pavilion that has only three facets. Very bright and interesting stone. I'll post a pic if I can find the darn thing. Anyway, setting something like you've described, with rounded edges, would require some novel setting like wire wrapping or a wide banded bezel, something that could get a grip on it. |
| Posted: 8/30/2005 2:30:21 PM | |
| P: 8/31/2005 4:06:41 AM | |
|
Cave Keeper Cut Rock Total Posts: 264 Last Post: 9/23/2005 Member Since: 6/30/2004 |
Date: 8/30/2005 2:30:21 PM Author: Michael_E : A clear gem with a three sided pavilion will form what is called a 'retro reflector' if the facets are cut at just the right angles. One of the neat things about this is that, over a certain band of entrance angles any light ray entering this will be reflected back at the same angle and direction that it entered from, (although not along the same path).: Now that's the anti-Evil Eye solution! Thunder Storm Maker (Grand Master), creating havoc in the Heavens when active. Otherwise just a lazy Cave Keeper, sleeping on a huge pile of tiny glittery rocks, small dazzling stones and big sparkling pebbles. |
| Posted: 8/31/2005 4:06:41 AM | |
 Previous Page
|
Next Page 
|
Contact Us | Back Home | Privacy Statement | Forum Agreement | Forum Policies | |
| Ideal BB Version: 0.1.5.4.beta1 | Message forum software powered by the Ideal BB |
| |
Pricescope -
Knowledge -
Diamond Prices -
Tools -
Resources -
About
© 2000-2009 Pricescope. Terms of Use Privacy Policy Disclaimer
forum archives
