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A HISTORY OF INNOVATION
 
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All of these patented ideas were achieved by combining basic
geometry with sense of design in doing so, we achieved
one piece designs that yield common sense solutions to
long standing problems.  Creating the perfect balance
between form and function.

 
In short, every is uniquely designed from the inside out.
 
Kohl Diamond Cutting 1912
 
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For over 100 years we have been developing innovative ways to design and manufacture new ideas that touch every facet of the Jewelry Industry.
These ideas consist of patented ideas such as the InterLock Clasp, EarringLock
earring fastener, the Jewel-Lock Ring System and more continue lead the way in
Jewelry Innovation.

 
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EARRINGLOCK

Patent No. 6,138,917
JEWEL-LOCK RINGS

Patent No. USD604,193 S
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Did you know that in 1890 the patent office was
 going to close due to the lack of patent applications.


 

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INTERLOCK CLASP
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kohl klasp 2 angle wg with chain.jpg
THE BETTER HALF

Patent No. USD604,193 S
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JEWEL-LOCK RING SIZERS
Ring sizers wg(1).jpg
EARRINGlOCK SUPPORT JACKETS
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Oval jacket wg w ring on bottom perp.jpg
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RD side view Dia Dia.jpg
Oval jacket yg w ring on bottom front.jpg
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JEWEL-LOCK MANDREL
Mandrill.jpg

Patent No. USD598791 S
THE AMERICAN SHANK
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Patent No. US d560,135 S
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PRINCESS CUT PRE-NOTCH
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Patent No. US 6,260,384B1
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