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<p>[QUOTE="Hollyblue, post: 895468, member: 1496"]For many years facet designs were a "trade"secret by private cutters and companies. Actual cutting diagrams were published probably in the 1940's for public use.A faceter's club I belonged to in the 1980's had over 1,200 original diagrams published by that time. A page from a forum discussing design time lines.... <a href="https://usfacetersguild.org/forums/topic/oldest-gem-design-challenge/" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://usfacetersguild.org/forums/topic/oldest-gem-design-challenge/" rel="nofollow">https://usfacetersguild.org/forums/topic/oldest-gem-design-challenge/</a>[/QUOTE]</p><p><br /></p>
[QUOTE="Hollyblue, post: 895468, member: 1496"]For many years facet designs were a "trade"secret by private cutters and companies. Actual cutting diagrams were published probably in the 1940's for public use.A faceter's club I belonged to in the 1980's had over 1,200 original diagrams published by that time. A page from a forum discussing design time lines.... [URL]https://usfacetersguild.org/forums/topic/oldest-gem-design-challenge/[/URL][/QUOTE]
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