Rounds

In-Stock Round Lab Grown Diamonds, Ready to Ship

Round brilliant lab grown diamonds are the most timeless and sought after shape for engagement rings and fine jewelry. At Jamming Gems, every round lab diamond we list is in stock and ready to ship, so you don’t have to wait weeks for sourcing or risk delays. Each diamond (over 1ct) is certified, carefully inspected, and ready for fast shipping—perfect for when you want to start your project without the wait.

Looking for something we don’t currently have listed? We also offer a personalized shopping service to help you find the exact lab diamond that fits your specifications. Whether it’s size, color, or clarity, our team can source options quickly and guide you through the selection process.