Gem stone

The ornamental design for a gem stone, as shown and described.

FIG. 1 is a side view showing the design of the gem stone.

FIG. 2 is a top view showing the design of the gem stone; and,

FIG. 3 is a bottom view showing the design of the gem stone.

Patent	Priority	Assignee	Title
D505091,	Apr 16 2004		Gem stone
D674721,	Jul 20 2012	Le Vian Corporation	Extraterrestrial step cuts in a cushion-shaped gemstone
D674722,	Jul 20 2012	Le Vian Corporation	Parisian honeycomb cuts in a cushion-shaped gemstone
D686937,	Jul 20 2012	Le Vian Corporation	Roll top french cuts in an octagonal gemstone

Patent	Priority	Assignee	Title
D297718,	Aug 08 1984	I. Cohen & Sons Diamond Industry in Orion Factory	Diamond or precious stone
35937,
36359,
D444097,	Sep 18 2000		Crown of a round facetted gemstone

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