How does moissanite compare to diamond?

• Very similar hardness (9.25+ vs 10), but lower value makes moissanite a bit less brittle, less prone to chipping and more durable overall
• Higher refractive index (2.65–2.69 vs 2.42), which gives moissanite more brilliance and sparkle compared to diamonds
• Lower Abbe number. It means that moissanite tends to disperse light into colors more than diamond, giving moissanite more fiery or rainbow colors
• Usually lab-produced, so much more ethical in general, and much higher clarity on average
• It’s waaay cheaper

So for anyone going for a diamond ring, I suggest trying moissanite instead. The only thing that diamond has going for it in this comparison is just decades-long PR. It’s not even a fun gem chemistry-wise, it’s just carbon. Moissanite, on the other hand, is SiC :)