Starting a diamond painting business in 2026 is a low-barrier, high-potential opportunity in the growing DIY and personalized gift market. This step-by-step guide covers everything from choosing a profitable niche and sourcing reliable suppliers to building a Shopify store and driving traffic through TikTok, Pinterest, and SEO. Whether you’re launching with ready-made kits or custom designs, success comes down to branding, product quality, and smart marketing. If you’re looking to build a sustainable ecommerce business, this guide shows you exactly where to start.