Moissanite and diamonds are compared on various attributes. While diamonds are the hardest material at 10 on the Mohs scale, moissanite is nearly as hard at 9.25. Both are highly durable. Moissanite offers a more affordable option than diamonds, with price determined by size and quality. Though diamonds have unmatched brilliance, moissanite also exhibits high brilliance through fire and sparkle. While diamond mining has ethical and environmental concerns, moissanite is lab-created with no mining involved, providing a more sustainable option.