Gemstone

The ornamental design for a gemstone, as shown and described.

FIG. 1 is a top plan view of a gemstone showing my new design;

FIG. 2 is a bottom plan view;

FIG. 3 is a front elevational view;

FIG. 4 is a side elevational view;

FIG. 5 is a side elevational view taken in the direction 5--5 of FIG. 1; and,

FIG. 6 is a perspective view.

Patent	Priority	Assignee	Title
5970744,	Dec 01 1998	Tiffany and Company	Cut cornered square mixed-cut gemstone
6363745,	Dec 01 1998	Tiffany and Company	Cut cornered square mixed-cut gemstone
D390155,	Apr 08 1997	BUTTERFLY GEM COLLECTION INC	Butterfly gem cut
D405712,	Jan 07 1997	Ambar Diamonds, Inc.	Gemstone
D411133,	Sep 01 1998		Hexagon shaped diamond
D418444,	Jun 16 1999	William Goldberg Diamond Corp.	Jewelry stone
D419103,	Jan 14 1999	FABRIKANT INVENTORY, LLC	Gem cut
D420935,	Nov 04 1996	Ambar Diamonds Inc.	Gemstone
D442114,	Dec 01 1998	Tiffany and Company	Cut cornered square mixed-cut gemstone
D463315,	May 14 2001	Tiffany and Company	Gemstone
D465430,	Aug 08 2001	Hearts on Fire Company, LLC	Diamond
D502665,	Jul 28 2003		Gemstone
D635050,	Mar 22 2005		Diamond
D876979,	Apr 19 2018	H. K. DESIGNS INC.	Precious stone

Patent	Priority	Assignee	Title
58322,
58323,
58324,
146143,
D250100,	Nov 02 1977		Precious, semiprecious or synthetic cut stone
D324003,	Jul 18 1989	SAADA, SHALOM	Gemstone

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Executed on	Assignor	Assignee	Conveyance	Frame	Reel	Doc
Mar 20 1990	D HAENE, J	Nippon Marketing Partners, naamloze vennootschap	ASSIGNMENT OF ASSIGNORS INTEREST	005260	0326	pdf
Mar 28 1990		Nippon Marketing Partners, naamloze vennootschap	(assignment on the face of the patent)
Nov 13 1997	NIPPON MARKETING PARTNERS	FLANDERS DIAMOND EXPORTERS	CHANGE OF NAME SEE DOCUMENT FOR DETAILS	009027	0690	pdf
May 15 1998	FLANDERS DIAMOND EXPORTERS	KUWAYAMA EUROPE, NAAMLOZE VENNOOTSCHAP	ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS	009367	0355	pdf

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