The definition of wholesale is "the sale of goods for resale." You might have purchased an item at below the most common retail price but, it is still purchased at the retail level, you are the end user
Licensing signifies formal permission, granted by a government-appointed, or recognized board. To date, licensing exists only for real estate appraisers, NOT a gemologist/ jewelry appraiser
GIA does not certify diamonds; they grade them. According to GIA, unacceptable are the following, "GIA Certified", "GIA Certified Diamonds" or, "GIA Diamond"