You’re in the right place for lab-grown diamond.By now you already know that, whatever you are looking for, you’re sure to find it on Tianyu gems.we guarantee that it’s here on Tianyu gems.The product is anti-bacterial. It is treated with bacteria resistant agent which can effectively kill staphylococcus aureus, colon bacillus, and other types of germs. .We aim to provide the highest quality lab-grown diamond.for our long-term customers and we will actively cooperate with our customers to offer effective solutions and cost benefits.