Forums
New posts
Search forums
What's new
New posts
Latest activity
Members
Registered members
Current visitors
Charts
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Gemstones, Minerals & Fossils
Lapidary
5 carat Lowmead amethyst
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Help Support Prospecting Australia:
This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Message
<blockquote data-quote="Lefty" data-source="post: 269367" data-attributes="member: 2976"><p>Quite a nice colour I thought. This photo is in incandescent light, in natural light it is a deeper tone of purple - but the stone is not dark. Approx 5 carats and 11mm across.</p><p></p><p><img src="https://c1.staticflickr.com/9/8451/28450867224_d6e690c888_c.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>A simple design - Jeff Graham's "Lighthouse" slightly modified - but rather effective. Four-fold and six-fold symmetry and a smaller number of larger facets supposed to work well for deeper colours. It worked well here anyway.</p><p></p><p>Is it still four-fold symmetry if the crown is two-fold mirror image symmetry but the pavilion is four-fold? It's the pavilion that's doing the job of reflecting the light back up.</p></blockquote><p></p>
[QUOTE="Lefty, post: 269367, member: 2976"] Quite a nice colour I thought. This photo is in incandescent light, in natural light it is a deeper tone of purple - but the stone is not dark. Approx 5 carats and 11mm across. [img]https://c1.staticflickr.com/9/8451/28450867224_d6e690c888_c.jpg[/img] A simple design - Jeff Graham's "Lighthouse" slightly modified - but rather effective. Four-fold and six-fold symmetry and a smaller number of larger facets supposed to work well for deeper colours. It worked well here anyway. Is it still four-fold symmetry if the crown is two-fold mirror image symmetry but the pavilion is four-fold? It's the pavilion that's doing the job of reflecting the light back up. [/QUOTE]
Verification
Post reply
Gemstones, Minerals & Fossils
Lapidary
5 carat Lowmead amethyst
Top