Gemstone

I claim the ornamental design for a gemstone, as shown.

FIG. 1 is a side elevational view of a gemstone showing my new design;

FIG. 2 is a top plan view;

FIG. 3 is a bottom plan view; and,

FIG. 4 is a perspective view.

Patent	Priority	Assignee	Title
6604382,	Nov 07 2000	OOSHIMA, TOSHIAKI	New-cut diamond shape
D426488,	Apr 05 1999		Gemstone
D439864,	Nov 22 1999		Diamond
D447082,	Feb 14 2000		Diamond
D460711,	Jan 10 2001	Whirlpool Corporation	Diamond or precious stone
D462290,	Jun 12 2001	Diamintangibles International, Ltd.	Precious stone
D478529,	May 17 2002		Gemstone
D528460,	May 27 2005	Z INVESTMENT HOLDINGS, LLC	Diamond
D696974,	Apr 05 2012		Gemstone
D711280,	Nov 25 2013	Diamintangibles International, Ltd.	Diamond
D727785,	Aug 08 2014	STERLING JEWELERS INC	Multiple facet gemstone
D743295,	Mar 20 2014		Gemstone
D757598,	Mar 20 2014		Gemstone
D829124,	Nov 11 2016	Realization Desal AG	Cut stone
D879649,	May 28 2018	LUCKY EYE LIMITED	Diamond
D883134,	Nov 11 2016	Realization Desal AG	Cut stone
D883847,	Nov 11 2016	Realization Desal AG	Cut stone
ER149,
ER2650,

Patent	Priority	Assignee	Title
3788097,
141258,
143471,
D286387,	Mar 21 1984		Diamond
D287232,	Mar 21 1984		Diamond
D297718,	Aug 08 1984	I. Cohen & Sons Diamond Industry in Orion Factory	Diamond or precious stone
D311881,	Oct 05 1987		Precious stone
D316984,	Sep 05 1988	Seiki Shinsha Co. Ltd.	Precious stone
DE2014965,

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