It is believed that the three stones in a three stone engagement ring with diamond band symbolize the past, present, and future of a couple’s relationship. On the other hand, several customers who are buying three stone diamond rings claim that the three stones in these rings stand for fidelity, love, and friendship. So, if your loved one is looking for an engagement ring with deeper meanings, then it is best to get her a three stone engagement ring with a diamond band. It can be said that Meghan Markle is responsible for the recent popularity ofd three stone diamond rings. Of course, the engagement ring that Prince Harry gifted to the Suits’ star was a stunning three stone diamond ring. The center stone in Meghan Markle’s ring was sourced from Botswana, a country known for its ethical sourcing of diamonds. The other two stones in the ring belong to the personal collection of Harry’s mother, Princess Diana. The cost of Meghan Markle’s diamond ring is estimated to be around $350,000.