This document outlines an instructional design plan for an online course to teach diamond shoppers how to select a diamond. The course will cover the 4Cs of diamonds (cut, color, clarity, carat), diamond shapes, certification types, pricing factors, and scams to avoid. Learners will complete lessons, quizzes, and a case study. Formative evaluation will involve one-on-one and group sessions. A summative evaluation survey will assess if learners feel prepared to select a diamond and provide feedback to improve the course. A prototype of Lesson 1 has been created using Dreamweaver.