Write an engaging introduction to the International Gem & Jewelry Show in Novi, highlighting its significance as a unique marketplace for gem enthusiasts. Explore the captivating processes behind the formation of gemstones, emphasizing the geological factors that contribute to their beauty and rarity. Incorporate interesting facts about specific gems featured at the show, weaving in their historical and cultural significance. Discuss the excitement of discovering rare finds and the art of jewelry-making as a blend of science and craftsmanship. Conclude with an invitation for readers to experience the wonder of gems firsthand at the event.