1. © 2008 World Gemological Institute JCK Las Vegas May 30, 2008

2. © 2008 World Gemological Institute Who is the World Gemological Institute (WGI)? Over 30 years of diamond grading experience Assured accuracy and reliability in diamond grading –A minimum of 2-3 experienced diamond graders examine every diamond –Six month training program for all new diamond graders State of the art measurement, grading and identification equipment Non-Profit Organization Highest level of ethics and transparency

3. © 2008 World Gemological Institute Institute for Gemological Research The World Gemological Institute is conducting several diamond- related research projects around the globe Diamond research is meant to benefit the diamond jewelry industry as well as the industrial sector’s use of diamond Results of research projects will be presented in peer-reviewed trade journals

4. © 2008 World Gemological Institute Continued Importance of Diamond Grading Reports Retail diamond business has changed much in the last 30 years Most consumers require independent verification of a diamond’s attributes and nature Customers come to sale self-educated by internet, friends and magazines More than anything else, customers are looking for assurance A diamond grading report from an independent laboratory should be an essential selling tool

5. © 2008 World Gemological Institute Goals of WGI’s Diamond Grading Report Program The World Gemological Institute engaged the research division of MVI Marketing Ltd., Jewelry Consumer Opinion Council (JCOC), to discover ways in which diamond grading reports could be used as a sales tool to increase the value and volume of diamonds and diamond jewelry sales The World Gemological Institute plans to apply findings from consumer-targeted research and extensive industry dialogue to all aspects of diamond grading report use, including: –Gemological and grading services –Sales staff training –Consumer education and marketing

6. © 2008 World Gemological Institute Who is the Jewelry Consumer Opinion Council (JCOC)? The Jewelry Consumer Opinion Council (JCOC) is an Internet- based, niche market research service exclusive to the gem and jewelry industries. The JCOC is made up of a sampling panel of consumers throughout North America representing all ages, genders, income levels, buying categories and geographic regions.

7. © 2008 World Gemological Institute Consumer Research Summary Methodology: The Jewelry Consumer Opinion Council (JCOC) conducted this study for WGI between the dates of March 31 and May 21, 2008. The survey was completed by 2,879 JCOC Panel Members. Respondents in this study were from the United States. The results of this study were weighted to match U.S. Census figures. In exchange for completing this survey, panel members received one entry into the current JCOC sweepstakes.

8. © 2008 World Gemological Institute Conducting Online Research When shopping for fine diamond jewelry, do you first conduct research online? Base: All respondents (n = 2,879)

9. © 2008 World Gemological Institute Knowledge of 4Cs Base: All respondents (n = 2,879) Are you familiar with the 4Cs of diamonds?

10. © 2008 World Gemological Institute Topics of Online Research Which of the following do you research online before you make a fine diamond jewelry purchase? Select all that apply. Base: Respondents who conduct online research when purchasing fine jewelry (n = 945)

11. © 2008 World Gemological Institute Online Research - Reassurance When purchasing diamond jewelry set with a significant diamond (1/3 carat or larger), which of the following gives you the greatest reassurance that the diamond you are purchasing is exactly as described? Base: All respondents (n = 2,879)

12. © 2008 World Gemological Institute Grading Report Timing When would you most prefer to see diamond grading reports when shopping for diamond jewelry set with a significant diamond (1/3 carat or larger)? Base: All respondents (n = 2,879)

13. © 2008 World Gemological Institute Support for Branding Initiatives Companies are employing new and exciting branding opportunities to maintain and increase sales Co-branded diamond grading reports strengthen brand equity while also assuring independent certification The World Gemological Institute’s distinctive and luxurious report design sets your product apart The World Gemological Institute provides many customized options to support existing and new branding initiatives –Co-Branded Reports –Custom Inscription Service –Categories for “Ideal” and “Hearts & Arrows” cut classifications

14. © 2008 World Gemological Institute Diamond Grading Report Full size diamond grading report Distinctive and luxurious design 4 Cs clearly displayed “Ideal” and “Hearts & Arrows” cut classifications Diamond profile Plotting diagrams Branded, personal, and/or numeric inscriptions available Store specific or diamond brand available on report

15. © 2008 World Gemological Institute Diamond Precis “Passport” size diamond grading report Distinctive and luxurious design 4 Cs clearly displayed “Ideal” and “Hearts & Arrows” cut classifications Diamond profile Inscription included Branded, personal, and/or numeric inscriptions available Store specific or diamond brand available on report Available for all size diamonds

16. © 2008 World Gemological Institute Speed & Convenience for Israeli Sourced Diamonds $3.73 billion in net polished exports to United States from Israel in 2007 The best and most efficient choice for your diamonds supplied through Israel The World Gemological Institute provides grading results in 3-4 days, guaranteed Quickest supply of needed out-of-stock diamonds with grading reports Faster inscription service for newly ordered diamonds

17. © 2008 World Gemological Institute