No, I doubt the diamonds are plastic but they would look better if they were or if they were not included with the ring.For the positive:The ring design is very attractive - intricate without being flimsy or gaudy. The opal my ring came with had very little color with with only a few strands of light green (acceptable, but barely).For the negative:The four tiny diamonds in it (you can't easily see where they are in the picture - two per side, right before the intricate 'V' on either side of the opal meet on the ring band) are the most lifeless things I have seen. No, they aren't dirty on my ring - they just look like flat plastic - and, when a person notices them when they look carefully, they actually detract from the ring.Would I suggest this purchase?This is a coin toss - from a distance, the ring is still attractive, just don't tell anyone that it has diamonds if you are going to show it off. As such, the price could be lower for what you are actually receiving (ie. not receiving any gain from the 'diamonds')My boyfriend got me this ring as an engagement ring as I've never been a fan of diamonds as a focal point on a ring, I'd rather they have color & personality, & I'm an Oct. baby that loves opal, this ring is very beautiful! It is sturdy, but looks so delicate on the hand, I simply love it! The stone is great quality, has great flare, no cheap blue hue to it, which I appreciate.The ring arrived on time, beautifully packaged. They go to great lengths to make sure customers know they are appreciated. When it comes time for the wedding bands, we know where to come, I'd order from these guys again and again.This Ring I ordered was outstanding for the quality, gold, and price. Most of all the service I received was outstanding. I had to send back the ring due to the size and I'm sure the replacement will also have the same results. Thanks to Amazon and to Direct-Jewerly for all that was done to ensure this customer was very satisified. I would again buy from Direct-Jewerly again for all different the jewerly they carry. Thanks for all that was done help this customer.My wife loved this ring with our sons birthstone. Nice packaging and giftwrap tooNot worth the money and the horrible picture does it justice. Sadly that is true, would not buy from this seller again due to the quality of the box exceeding the quality of the product and the box was not much to look at.Beautiful. It looks so pretty even in person.(: I absolutely love it! I will definitely use Direct-Jewelry in the future.I love it!Cracked oval