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The ornamental design for a gemstone, as shown and described.
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FIG. 1 is a front and right side view of a gemstone showing my new design.
FIG. 2 is a plan view thereof.
FIG. 3 is a bottom view thereof.
FIG. 4 is a cross-section thereof.
FIG. 5 is a top perspective thereof.
FIG. 6 is a bottom perspective thereof; and,
FIG. 7 is a side perspective thereof.
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| D489638, | Apr 21 2003 | K R GEMS & DIAMONDS INTERNATIONAL | Diamond |
| D492910, | Jul 07 2003 | My Diamond Place Ltd. | Diamond |
| D503354, | Aug 27 2003 | Precious stone cut | |
| D510887, | May 13 2004 | My Diamond Place Ltd | Diamond |
| D512937, | Sep 14 2004 | Gemstone | |
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| D534831, | Jul 14 2003 | Stone cut | |
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| D674133, | Oct 22 2011 | Davinci Industrial Inc. | Display light |
| D743295, | Mar 20 2014 | Gemstone | |
| D757598, | Mar 20 2014 | Gemstone |
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