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<p>[QUOTE="Bronwen, post: 4165326, member: 5833"]When I played the UV flashlight over a little drawer stuffed with cameos in glass, plastic & ceramic, all the items reflected back the purple light with the exception of one piece, which looked just the same as it does in ordinary light.</p><p><br /></p><p>I purchased the piece when I was still fairly new to cameos because I thought it seemed better quality, that it might be what it appeared to be & not an imitation. The one shop clerk who was always nasty to me was quite certain the cameo was artificial, not unreasonable since the setting is brass. For the price I decided to buy it and remained in doubt about its true nature, finally dismissing hope & consigning it to resin. Until last night. I don't think I ever examined it under magnification before either. This is what I saw:</p><p><br /></p><p>[ATTACH=full]333016[/ATTACH] [ATTACH=full]333017[/ATTACH] </p><p><br /></p><p>The cameo is less yellow & the streaks are less evident under ordinary lighting conditions, where it looks more uniformly creamy in color. I had little acquaintance with ivory when I bought it, nor did I know to look for a signature, so did not spot the initials. </p><p><br /></p><p>It has a trombone clasp & the back is covered over, almost like a picture frame.</p><p><br /></p><p>[ATTACH=full]333027[/ATTACH] </p><p><br /></p><p>If the back were exposed it would have been easier to make the identification. Someone else decided to test for plastic with the hot needle test & must have decided the result was positive or I don't think the brooch would have ended up in a basket of costume jewellery.</p><p><br /></p><p>[ATTACH=full]333028[/ATTACH]</p><p><br /></p><p>I knew what I was seeing last night because I had seen it before with other ivory pieces when examined under UV among items in a wide variety of materials; ivory, both elephant & walrus, just seems to soak up the UV rays, maybe looking slightly yellowed. And we see that a hot needle used on ivory can give a misleading result.</p><p><br /></p><p>Could've put this under Finds, if finding something in your own house counts. Definitely had some fun with the UV. Thanks, [USER=63]@cxgirl[/USER] for prompting me to try the experiment. <img src="styles/default/xenforo/smilies/smile.png" class="mceSmilie" alt=":)" unselectable="on" />[/QUOTE]</p><p><br /></p>
[QUOTE="Bronwen, post: 4165326, member: 5833"]When I played the UV flashlight over a little drawer stuffed with cameos in glass, plastic & ceramic, all the items reflected back the purple light with the exception of one piece, which looked just the same as it does in ordinary light. I purchased the piece when I was still fairly new to cameos because I thought it seemed better quality, that it might be what it appeared to be & not an imitation. The one shop clerk who was always nasty to me was quite certain the cameo was artificial, not unreasonable since the setting is brass. For the price I decided to buy it and remained in doubt about its true nature, finally dismissing hope & consigning it to resin. Until last night. I don't think I ever examined it under magnification before either. This is what I saw: [ATTACH=full]333016[/ATTACH] [ATTACH=full]333017[/ATTACH] The cameo is less yellow & the streaks are less evident under ordinary lighting conditions, where it looks more uniformly creamy in color. I had little acquaintance with ivory when I bought it, nor did I know to look for a signature, so did not spot the initials. It has a trombone clasp & the back is covered over, almost like a picture frame. [ATTACH=full]333027[/ATTACH] If the back were exposed it would have been easier to make the identification. Someone else decided to test for plastic with the hot needle test & must have decided the result was positive or I don't think the brooch would have ended up in a basket of costume jewellery. [ATTACH=full]333028[/ATTACH] I knew what I was seeing last night because I had seen it before with other ivory pieces when examined under UV among items in a wide variety of materials; ivory, both elephant & walrus, just seems to soak up the UV rays, maybe looking slightly yellowed. And we see that a hot needle used on ivory can give a misleading result. Could've put this under Finds, if finding something in your own house counts. Definitely had some fun with the UV. Thanks, [USER=63]@cxgirl[/USER] for prompting me to try the experiment. :)[/QUOTE]
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