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<p>[QUOTE=&quot;Ision, post: 2902066, member: 17064&quot;]I am familiar with those portraits from your link above.&nbsp; They are characters from &quot;Ivanhoe&quot; and &quot;A <i>Christmas Carol</i>&quot; by Dickens.&nbsp; The top two are from Ivanhoe, and the bottom is a portrait of the spirit of Christmas from Dickens.&nbsp; Note the glaze colors are the early green and brown, which were the safest and most stable.</p><p><br /></p><p>My two green tiles have an extremely small celled and tight crazing, which may only be seen if one looks carefully from up close.&nbsp; Most all antique majolica tiles will display some crazing, which is a glaze feature created when the tile is made.&nbsp;&nbsp; All glazes were created from various chemical formulations by professional chemists of the Victorian era.&nbsp; Each chemist created their own formulations, or modified formulas they found in texts, or took from other chemists.&nbsp; </p><p><br /></p><p>If a chemist produced a desirable glaze, whose properties were stable enough, that chemist had a job, as it was the chemist, who owned the glaze formula, NOT the tile maker.&nbsp; So, if a maker liked a particular glaze, they sought out the chemist responsible and tried to hire them in order to obtain the use of this chemist&#039;s glaze palette.&nbsp; If the chemist quit, or was fired, he took his glazes with him.</p><p><br /></p><p>All glazes were trade secrets, as was the manner by which the clays used were mined, refined, and processed...as was the technique used to create a tile.</p><p><br /></p><p>Some companies became popular simply because of their glaze colors, offering colors other companies could not make.&nbsp; Others became popular because their glazes did not CRAZE, or their tiles did not craze as much, and this resulted in a higher priced tile.</p><p><br /></p><p>Wedgwood simply had good chemists.[/QUOTE]</p><p><br /></p>

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