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	<title>GIA 4Cs Blog &#187; Quartz</title>
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	<description>Diamond 4Cs and Gemstone Information</description>
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		<title>Amethyst &#8211; A Variety of Quartz</title>
		<link>http://209.237.165.96/4csblog/2013/amethyst-variety-of-quartz</link>
		<comments>http://209.237.165.96/4csblog/2013/amethyst-variety-of-quartz#comments</comments>
		<pubDate>Fri, 01 Feb 2013 08:00:51 +0000</pubDate>
		<dc:creator><![CDATA[robin]]></dc:creator>
				<category><![CDATA[Birthstones]]></category>
		<category><![CDATA[Gemstones]]></category>
		<category><![CDATA[Amethyst]]></category>
		<category><![CDATA[Quartz]]></category>

		<guid isPermaLink="false">http://4csblog.gia.edu/?p=1680</guid>
		<description><![CDATA[<p><p><img width="300" height="185" src="http://209.237.165.96/4csblog/wp-content/uploads/2013/01/Amethyst_gemcard_top_456-300x185.png" class="attachment-medium wp-post-image" alt="Amethyst_gemcard_top_456" /></p><p>Did you know that amethyst &#8212; February’s dazzling birthstone &#8212; is actually the purple variety of the mineral quartz?</p>
<p>Colorless quartz, known as “rock crystal,”  was primarily used in ancient times to manufacture crystal balls and bowls. Other  varieties include &#8230;</p><div id="crp_related"> </div></p><p>The post <a href="http://209.237.165.96/4csblog/2013/amethyst-variety-of-quartz">Amethyst &#8211; A Variety of Quartz</a> appeared first on <a href="http://209.237.165.96/4csblog">GIA 4Cs Blog</a>.</p>]]></description>
				<content:encoded><![CDATA[<p><img width="300" height="185" src="http://209.237.165.96/4csblog/wp-content/uploads/2013/01/Amethyst_gemcard_top_456-300x185.png" class="attachment-medium wp-post-image" alt="Amethyst_gemcard_top_456" /></p><p>Did you know that amethyst &#8212; February’s dazzling birthstone &#8212; is actually the purple variety of the mineral quartz?<span id="more-1680"></span></p>
<p>Colorless quartz, known as “rock crystal,”  was primarily used in ancient times to manufacture crystal balls and bowls. Other  varieties include the October birthstone citrine, as well as rose quartz, smoky quartz, and tiger’s eye.</p>
<div id="attachment_1784" style="width: 410px" class="wp-caption aligncenter"><a href="http://4csblog.gia.edu/wp-content/uploads/2013/01/33388_400.png"><img class=" wp-image-1784" title="Violetish purple amethyst" src="http://4csblog.gia.edu/wp-content/uploads/2013/01/33388_400.png" alt="Violetish purple amethyst" width="400" height="400" /></a><p class="wp-caption-text">This violetish purple, 23.76-carat cushion cut amethyst is from Brazil.</p></div>
<p>As the most prized member of the quartz family, amethyst boasts several key attributes. It is relatively common, affordable, and as cut stones, can be  found in large sizes across a wide  range of gem cuts and shapes.</p>
<div id="attachment_1785" style="width: 410px" class="wp-caption aligncenter"><a href="http://4csblog.gia.edu/wp-content/uploads/2013/01/1485_400.png"><img class="size-full wp-image-1785" title="1485_400" src="http://4csblog.gia.edu/wp-content/uploads/2013/01/1485_400.png" alt="" width="400" height="323" /></a><p class="wp-caption-text">Cushion cut amethyst.</p></div>
<p style="text-align: left;">To preserve an amethyst’s lustrous color, avoid prolonged exposure to heat or sunlight. If the stone is mounted, use a toothbrush to clean behind  it where dust tends to collect, and  wash it with warm, soapy water. Ultrasonic cleaning is usually considered safe, though steam cleaning is not recommended.</p>
<p>Read up on <a title="GIA Celebrates Birthstones – February’s Empowering Amethyst" href="http://4csblog.gia.edu/2013/gia-celebrates-birthstones-amethyst">amethyst lore</a>, and how wearing one can symbolize personal empowerment.</p>
<p>&nbsp;</p>
<div id="crp_related"> </div><p>The post <a href="http://209.237.165.96/4csblog/2013/amethyst-variety-of-quartz">Amethyst &#8211; A Variety of Quartz</a> appeared first on <a href="http://209.237.165.96/4csblog">GIA 4Cs Blog</a>.</p>]]></content:encoded>
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