Moissanite vs. DiamondMoissanite and diamond engagement rings are often compared due to their similar appearance, but there are some differences between the two. Diamonds are the most popular choice for engagement rings and have a higher value and prestige than moissanite. However, diamonds are much more expensive than moissanite and have a higher environmental impact. Moissanite, on the other hand, is a more affordable and environmentally friendly alternative to diamonds that can offer the same stunning sparkle and durability.