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<p>[QUOTE="Bronwen, post: 416933, member: 5833"]No, I wouldn't. I think they probably got their information from the alexandrite site I mentioned.</p><p><br /></p><p><a href="http://www.alexandrite.net/chapters/chapter7/" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.alexandrite.net/chapters/chapter7/" rel="nofollow">http://www.alexandrite.net/chapters/chapter7/</a></p><p><br /></p><p>'First synthetic color-change corundum was grown in 1909 and used as an alexandrite imitation.'</p><p><br /></p><p>I researched synthetic corundum & found that 1909 was when small synthetic rubies came on the market, used mainly in watches. Sapphire blue turned out to be difficult & it took a while to develop it. They also had to work out growing larger crystals. I have seen jewellery with these stones described as Victorian because seller was going by the style, usually of a ring, which they then date to the 1890s. I have never, ever seen an item with a color change sapphire that could be decisively placed to a time any earlier than 1940, although suspect they were probably available in the USSR somewhat before that. Some sellers in the US have tales of how the stone or the finished piece was brought back by a relative in military service, stationed in Egypt or North Africa after WWII.[/QUOTE]</p><p><br /></p>
[QUOTE="Bronwen, post: 416933, member: 5833"]No, I wouldn't. I think they probably got their information from the alexandrite site I mentioned. [URL]http://www.alexandrite.net/chapters/chapter7/[/URL] 'First synthetic color-change corundum was grown in 1909 and used as an alexandrite imitation.' I researched synthetic corundum & found that 1909 was when small synthetic rubies came on the market, used mainly in watches. Sapphire blue turned out to be difficult & it took a while to develop it. They also had to work out growing larger crystals. I have seen jewellery with these stones described as Victorian because seller was going by the style, usually of a ring, which they then date to the 1890s. I have never, ever seen an item with a color change sapphire that could be decisively placed to a time any earlier than 1940, although suspect they were probably available in the USSR somewhat before that. Some sellers in the US have tales of how the stone or the finished piece was brought back by a relative in military service, stationed in Egypt or North Africa after WWII.[/QUOTE]
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