  <HTML><!-- InstanceBegin template="/templates/gabarit_Pierre_ok.dwt" codeOutsideHTMLIsLocked="false" --> <HEAD> <!-- #BeginEditable "doctitle" -->  <meta http-equiv="Content-Language" content="fr"> <title>Gemsbrokers - &#140;il de tigre</tITLE> <meta name="description" content="Oeil de tigre: caractristiques, gemmologie et principaux centres de taille et de ngoce"> <meta name="keywords" content="oeil de tigre, gemmologie, oeil de, quartz, crocidolite, inde, march, calcdoine, lapidaire, rfraction, birefringence, duret, mythes, cabochon, acheter, poids spcifique, composition chimique, caracteristiques, refraction"> <!-- #EndEditable -->  <META content="text/html; charset=iso-8859-1" http-equiv=Content-Type> <META content="Fireworks Splice HTML" name=description> <script language="JavaScript"> <!-- function MM_jumpMenu(targ,selObj,restore){ //v3.0   eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");   if (restore) selObj.selectedIndex=0; }  function openPictureWindow_Fever(imageName,imageWidth,imageHeight,alt,posLeft,posTop) { 	newWindow = window.open("","newWindow","width="+imageWidth+",height="+imageHeight+",left="+posLeft+",top="+posTop); 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                   acheter</u></em></font></strong></a></font></div></td>               <td background="../../menu_elements/divers_navigation/fond_sous_menu.gif"><div align="center"><font size="3"><strong><font face="Times New Roman, Times, serif"><em><u><a href="caract.htm">Caract&eacute;ristiques</a></u></em></font></strong></font></div></td>               <td background="../../menu_elements/divers_navigation/fond_sous_menu.gif"><div align="center"><font size="3"><strong><font face="Times New Roman, Times, serif"><em><u><a href="mythes.htm">Mythes                    et r&eacute;alit&eacute;s</a></u></em></font></strong></font></div></td>               <td background="../../menu_elements/divers_navigation/fond_sous_menu.gif"><div align="center"><font size="3"><strong><font face="Times New Roman, Times, serif"><em><u><a href="choisir.htm">Choisir</a></u></em></font></strong></font></div></td>               <td background="../../menu_elements/divers_navigation/fond_sous_menu.gif"><div align="center"><font size="3"><strong><font face="Times New Roman, Times, serif"><em><u><a href="provenances.htm">Provenances</a></u></em></font></strong></font></div></td>             </tr>           </table>                    </div>       <!-- #EndEditable --></TD>       <td height="24"></td>     </TR>     <TR>        <TD valign="middle" height="29" colspan="2"> <div align="center">            <input type="button" value="Previous" onClick="history.back()" name="button">         </div></TD>       <td></td>     </TR>     <TR>        <TD height="18">&nbsp;</TD>       <TD width="52"></TD>       <TD width="14">&nbsp;</TD>       <TD width="66" valign="top" bgColor=#FFFFFF>&nbsp; </TD>       <TD width="497" valign="top" bgColor=#FFFFFF>&nbsp;</TD>       <TD width="41" valign="top" bgColor=#FFFFFF>&nbsp;</TD>       <TD valign="top" bgColor=#FFFFFF>&nbsp;</TD>       <td></td>     </TR>     <TR>        <TD colspan="3" rowspan="3" valign="top"> <table width="100%" border="0" cellpadding="0" cellspacing="0" bgcolor="#99CCCC">           <!--DWLayoutTable-->           <tr>              <td width="14" height="600">&nbsp;</td>             <td width="109" valign="top" bgcolor="#99CCCC"><!-- InstanceBeginEditable name="sous menu" --><font face="Arial, Helvetica, sans-serif" size="2"><a href="../agate/caract.htm">Agate</a>        <br>       <a href="../aigue_marine/caract.htm">Aigue marine</a><br>       <a href="../alexandrite/caract.htm">Alexandrite</a><br>       <a href="../ambre/caract.htm">Ambre</a><br>       <a href="../amethyste/caract.htm">Am&eacute;thyste</a><br>       <a href="../chrysoberyl/caract.htm">Chrysob&eacute;ryl</a> <br>       <a href="../chrysoprase/caract.htm">Chrysoprase</a><br>       <a href="../citrine/caract.htm">Citrine</a><br>       <a href="../corail/caract.htm">Corail</a><br>       <a href="../cornaline/caract.htm">Cornaline</a><br>        <a href="../cristal_de_roche/caract.htm">Cristal de roche</a><br>         <a href="../diamant/caract.htm">Diamant</a> <br>       <a href="../emeraude/caract.htm">Emeraude</a><br> <a href="../grenat/caract.htm">Grenat</a><br>       <a href="../grenat_demantoide/caract.htm">Grenat demantoide</a> <br>       <a href="../grenat_mandarin/caract.htm">Grenat mandarin</a><br>       <a href="../grenat_tsavorite/caract.htm">Grenat tsavorite</a><br>       <a href="../iolite/caract.htm">Iolite</a><br>       <a href="../jaspe_sanguin/caract.htm">Jaspe sanguin<br>       </a><a href="../labradorite/caract.htm">Labradorite</a><br>       <a href="../lapis_lazuli/caract.htm">Lapis lazuli</a><br>       <a href="../oeil_de-chat/caract.htm">Oeil de chat</a><br>       <a href="../oeil_de-tigre/caract.htm">Oeil de tigre</a><br>       <a href="../onyx/caract.htm">Onyx</a><br>       <a href="../opale/caract.htm">Opale</a><br>       <a href="../peridot/caract.htm">P&eacute;ridot</a><br>       <a href="../pierre_de_lune/caract.htm">Pierre de lune</a><br>       <a href="../pierre_de_soleil/caract.htm">Pierre de soleil</a> <br>       <a href="../quartz_aventurine/caract.htm">Quartz aventurine</a><br>       <a href="../quartz_fume/caract.htm">Quartz fum&eacute;</a><br>       <a href="../quartz_rose/caract.htm">Quartz rose</a><br>       <a href="../quartz_rutile/caract.htm">Quartz rutile</a><br>       <a href="../rubis/caract.htm">Rubis</a><br>       <a href="../saphir/caract.htm">Saphir<br>       </a><a href="../spinelle/caract.htm">Spinelle<br>       </a><a href="../tanzanite/caract.htm">Tanzanite</a><a href="../spinelle/caract.htm">        </a><br>       <a href="../topaze/caract.htm">Topaze</a><br>         <a href="../tourmaline/caract.htm">Tourmaline</a><br>       <a href="../turquoise/caract.htm">Turquoise</a><br>       <a href="../zircon/caract.htm">Zircon</a><a href="../saphir/caract.htm">        </a></font><!-- InstanceEndEditable --></td>           </tr>         </table></TD>       <TD height="40" align="center" valign="middle"> <div align="center"><!-- #BeginEditable "Arri%8Fre" --><!-- #EndEditable --></div></TD>       <TD rowspan="5" valign="top"><!-- #BeginEditable "Texte principale de rubrique" -->        <div align="left">          <table width="100%" border="1" bgcolor="#FFFFFF" bordercolor="#FFFFFF">           <tr bgcolor="#99CCCC">              <td width="40%"><font face="Verdana, Arial, Helvetica, sans-serif" size="2" color="#000000"><b>Couleur</b></font></td>             <td width="60%"><font face="Verdana, Arial, Helvetica, sans-serif" size="2" color="#000000">Jaune                brun &agrave; rouge brun</font></td>           </tr>           <tr>              <td width="40%"><font face="Verdana, Arial, Helvetica, sans-serif" size="2" color="#000000"><b>Famille</b></font></td>             <td width="60%"><font face="Verdana, Arial, Helvetica, sans-serif" size="2" color="#000000">Quartz</font></td>           </tr>           <tr bgcolor="#99CCCC">              <td width="40%"><font face="Verdana, Arial, Helvetica, sans-serif" size="2" color="#000000"><b>Composition                chimique</b></font></td>             <td width="60%"><font face="Verdana, Arial, Helvetica, sans-serif" size="2" color="#000000">SiO<sub>2</sub></font></td>           </tr>           <tr>              <td width="40%"><font face="Verdana, Arial, Helvetica, sans-serif" size="2" color="#000000"><b>Syst&egrave;me                cristallin</b></font></td>             <td width="60%"><font face="Verdana, Arial, Helvetica, sans-serif" size="2" color="#000000">Hexagonal</font></td>           </tr>           <tr bgcolor="#99CCCC">              <td width="40%"><b><font face="Verdana, Arial, Helvetica, sans-serif" size="2" color="#000000">Duret&eacute;                (Echelle de Mohs)</font></b></td>             <td width="60%"><font face="Verdana, Arial, Helvetica, sans-serif" size="2" color="#000000">                7</font></td>           </tr>           <tr>              <td width="40%"><font face="Verdana, Arial, Helvetica, sans-serif" size="2" color="#000000"><b>Poids                sp&eacute;cifique</b></font></td>             <td width="60%"><font face="Verdana, Arial, Helvetica, sans-serif" size="2" color="#000000">2,66                &plusmn;0,20</font></td>           </tr>           <tr bgcolor="#99CCCC">              <td width="40%" height="25"><font face="Verdana, Arial, Helvetica, sans-serif" size="2" color="#000000"><b>Indice                de r&eacute;fraction</b></font></td>             <td width="60%" height="25"><font face="Verdana, Arial, Helvetica, sans-serif" size="2" color="#000000">1,544                - 1,553</font></td>           </tr>           <tr>              <td width="40%"><font face="Verdana, Arial, Helvetica, sans-serif" size="2" color="#000000"><b>Bir&eacute;fringence</b></font></td>             <td width="60%"><font face="Verdana, Arial, Helvetica, sans-serif" size="2" color="#000000">0,009</font></td>           </tr>           <tr bgcolor="#99CCCC">              <td width="40%"><font face="Verdana, Arial, Helvetica, sans-serif" size="2" color="#000000"><b>Caract&egrave;re                optique</b></font></td>             <td width="60%"><font face="Verdana, Arial, Helvetica, sans-serif" size="2" color="#000000">Uniaxe                +</font></td>           </tr>         </table>         <p align="left"><font face="Verdana, Arial, Helvetica, sans-serif" size="2" color="#000000">Le            quartz est le min&eacute;ral le plus commun dans la cro&ucirc;te terrestre            et en tant que gemme, c&#146;est aussi le plus commun des min&eacute;raux.            Dans l&#146;air, sous la forme de tr&egrave;s fines particules en suspension,            il raye les autres gemmes de moindre duret&eacute;. Le quartz existe            dans une plus grande vari&eacute;t&eacute; de formes, de types de formation            et de noms que n&#146;importe quel autre min&eacute;ral.<br>           </font><font face="Arial, Helvetica, sans-serif" size="2" color="#000000"><br>           <b> <span style='font-size:14.0pt;font-family:&quot;Times New Roman&quot;;color:black'><font face="Arial, Helvetica, sans-serif" size="3" color="#000000"><b><u>Principaux            centres de taille et de n&eacute;goce class&eacute;s par ordre d'importance<font size="2"><a name="centres"></a><a name="centres"></a></font></u></b></font></span></b></font></p>         <table width="100%" border="1" bordercolor="#FFFFFF" bgcolor="#FFFFFF">           <tr>              <td width="38%"><font face="Verdana, Arial, Helvetica, sans-serif" size="2" color="#000000"><b>&#140;il                de tigre cabochon</b></font></td>             <td width="62%"><font face="Verdana, Arial, Helvetica, sans-serif" size="2" color="#000000">Allemagne,                Hong Kong, <a href="../jaipur/jaipur.htm">Inde</a></font></td>           </tr>           <tr>              <td width="38%"><font face="Verdana, Arial, Helvetica, sans-serif" size="2" color="#000000"><b>&#140;il                de tigre colliers</b></font></td>             <td width="62%"><font face="Verdana, Arial, Helvetica, sans-serif" size="2" color="#000000">Hong                Kong, Allemagne, <a href="../jaipur/jaipur.htm">Inde</a></font></td>           </tr>           <tr>              <td width="38%"><font face="Verdana, Arial, Helvetica, sans-serif" size="2" color="#000000"><b>&#140;il                de tigre</b> <b>grav&eacute;s</b></font></td>             <td width="62%"><font face="Verdana, Arial, Helvetica, sans-serif" size="2" color="#000000">Hong                Kong, Allemagne, <a href="../jaipur/jaipur.htm">Inde</a></font></td>           </tr>           <tr>              <td width="38%"><b><font face="Verdana, Arial, Helvetica, sans-serif" size="2" color="#000000"></font></b></td>             <td width="62%"><font face="Verdana, Arial, Helvetica, sans-serif" size="2" color="#000000">&nbsp;</font></td>           </tr>           <tr>              <td width="38%" height="21"><b><font face="Verdana, Arial, Helvetica, sans-serif" size="2" color="#000000"></font></b></td>             <td width="62%" height="21"><font face="Verdana, Arial, Helvetica, sans-serif" size="2" color="#000000">&nbsp;</font></td>           </tr>         </table>       </div>       <!-- #EndEditable --></TD>       <TD valign="middle" colSpan=2 rowSpan=2 align="center"> <div align="center"><!-- #BeginEditable "Avant" --><a href="mythes.htm"><img src="../gabarit_images/fleche_avant.gif" width="38" height="25" border="0"></a><!-- #EndEditable --></div></TD>       <td></td>     </TR>     <TR vAlign=top>        <TD height="2"></TD>       <td></td>     </TR>     <TR vAlign=top>        <TD height="558"></TD>       <TD>&nbsp;</TD>       <TD>&nbsp;</TD>       <td></td>     </TR>     <TR vAlign=top>        <TD height="23">&nbsp;</TD>       <TD></TD>       <TD>&nbsp;</TD>       <TD></TD>       <TD>&nbsp;</TD>       <TD>&nbsp;</TD>       <td></td>     </TR>     <TR vAlign=top>        <TD height=58 colSpan=3 valign="top"><img src="../../elements_communs/gif_transparent.gif" width="122" height="52"></TD>       <TD></TD>       <TD></TD>       <TD></TD>       <td></td>     </TR>     <TR vAlign=top>        <TD height=27 colSpan=7 align="center" valign="top"><!-- #BeginEditable "copyright" -->  <p align="center"><font face="Arial, Helvetica, sans-serif" size="1" color="#000000"><a href="../copyright.html">Copyright           2002 Gemsbrokers Tous droits r&eacute;serv&eacute;s.</a></font></p>       <!-- #EndEditable --></TD>       <td></td>     </TR>   </TBODY> </TABLE> <!--------------------------- STOP COPYING THE HTML HERE ---------------------------> <table width="123" border="0" cellpadding="0" cellspacing="0">   <!--DWLayoutDefaultTable-->   <tr>      <td width="123" height="901">&nbsp;</td>   </tr> </table> </BODY> <!-- InstanceEnd --></HTML>  
