National Association of Watch & Clock Collectors
Encourages interest in the art and science of timekeeping
Gem e Wizard
Digital gem color analysis and pricing
Jewelers Security Alliance – Stolen Jewelry Website
A stolen jewelry web site
A computer program with an extensive set of “tools” including diamond weight estimators, colored stone weight estimators, a pearl grader, a diamond cut grader, a round diamond recutting analyzer and the Gemstone Database.
An online gemological forum
Bureau of Labor Statistics – Consumer Price Indexes
Produces a monthly data on changes in the prices paid by urban consumers for a representative basket of goods and services.
A non-invasive diamond identification and registration system.
Complete diamond, colored stone, and pearl pricing
An eclectic look at the gem industry and the rest of the universe
Precious metal pricing and trading
An online platform for jewelry industry professionals
Diamond news and pricing
Appraiser Under Oath
A site for personal property appraisers focusing on the legal side of appraising
A consumer advocacy site for all things diamond
Sarin is a developer of Diamond Grading systems, Gemology Tools and rough diamond optimization systems
OGI Systems Ltd. develops advanced technology for the diamond industry
Hearts & Diamonds Education – Brian Gavin
A site designed to educate consumers and retailers and clear up any confusion about what qualifies as a true hearts and arrows cut.
The Jewelry Loupe Blog
A magazine-blog for jewelry lovers, makers and connoisseurs.