Be one of the first 100 to book an Appointment this week, and get 15% OFF your first Appraisal. Labtrade is a full service Gem lab with more than fifty thousand completed Appraisals. We specialize in evaluating Jewelry, Diamonds, Gemstones and Watches for Insurance and for Selling. Have a Question? Call 702-220-5500 - Certified Appraisal on first piece on any item type is $119.00, two to four pieces $60.00 each. Additional discount available for volume over 5 pieces.