- 14k white gold;
- moissanite stones. 
 
Moissanite rings are becoming an increasingly popular choice - for all the best reasons. Moissanite is the second hardest to diamonds on the Mohs hardness scale. Based on rankings from 1 to 10, diamonds are a 10 and moissanite is a 9.25-9.5. Moissanite is a very durable option for an engagement ring stone, especially since the material doesn't scratch easily.