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Tianyu OEC (Moissanite vs Lab Diamond)

sd_flp

Brilliant_Rock
Joined
Jan 24, 2019
Messages
662
A couple years ago I got a 6mm OEC moissanite from Tianyu. I've always wanted one ever since Tianyu really got popular back in 2017. I've tried OECs from Starsgem and Mona, but I wasn't as keen on their OEC cut like Tianyu's. Their GH color OEC moissanite at the time was only $22.50! I'm guessing it might be a little less now, especially since they've really gotten popular with selling lab diamonds.

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Replacing the other OEC moissanite I bought from Mona (another popular Chinese vendor):
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I love this stone and still wear this necklace regularly! I love the small table and "plump" facets!

Because I loved this moissanite so much I knew I wanted to get a lab diamond OEC from them eventually, although I had read from others that getting OECs from Tianyu was a little difficult. They don't produce lab OECs very often and when they do, the quantities are limited. On a whim I reached out to my Tianyu sales rep to ask whether she had any OEC lab diamonds. I was hoping to get one that was at least 1.5 carats and near colorless (G-I). Unfortunately she did not have any near colorless but she did have an uncertified 1.69 D color OEC with VS2 clarity. It just arrived yesterday and I love it! Here it is next to my moissanite:

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The double refraction of the moisssanite makes it hard to take a photo; this is actually the best photo I have of both the diamond and moissanite together from my other attempts.

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I think I prefer the cut of the moissanite a little more because the table is smaller and the crown is slightly higher. But I think both are beautiful. I'm planning to get the lab diamond into a RHR.

As far as which one I prefer...I honestly like both for different reasons and purposes. I like the diamond for rings but for everything else I don't mind if it's a diamond or moissy. I love the pastel flashes that the OEC moissanite has, but I also like the crisp depth that the lab diamond provides. I would love to get some OEC moissy studs in the future but if Tianyu ever decided to make an OEC 5-stone ring in lab diamonds, I'd be all over it!
 
Both of those are lovely stones. =)2
 
Great post and 'reviews'. Off to check out Tianyu now ;)
 
Great post and 'reviews'. Off to check out Tianyu now ;)

Thanks!

If you do decide to buy from them, they are definitely more keen on custom cutting antique cut diamond for you if you decide to get the entire jewelry piece from them, too. I’m sure for very good customers they might make exceptions, but since I’m an occasional buyer, I just get whatever is in stock. :lol:

And the only reason I found this out was because I asked about an OMC/ACC cushion cut ring and the sales rep just so happened to mention that a custom cut lab diamond can be done for this project. :lol-2: I haven’t committed to this project yet, though.
 
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