Sara B.
Service was good
Service was good, product not so much. It's a nice ring but not what was represented online. The dimond is a different shape and the band is even different.

Our Story: Jewelry Built on Vision, Grounded in Values At Kōsei Moissanites, we believe that true luxury shouldn’t require compromise. Beautiful, high-grade jewelry should reflect both your personal style and your values. Every piece in our collection is crafted with intention—combining the exceptional brilliance of moissanite with modern, timeless design. Whether you are choosing an engagement ring, celebrating a personal milestone, or creating a custom piece, we craft jewelry meant to capture your unique story.
Koseimoissanites (koseimoissanites.com) has 10 customer reviews on Five Star Index, with an average rating of 3.9 out of 5.
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Sara B.
Service was good, product not so much. It's a nice ring but not what was represented online. The dimond is a different shape and the band is even different.
Michelle J.
Purchased the three stone trilogy engagment ring emerald cut and it came in perfect! Nice packaging , sturdy band. Did not realize the basket was low so need to get a band to match now but looking to get it from Kosei! Customer service was ok. Not sure if it was ai or real.people so cant really comment on that. I did have questions that were answered and my ring was delivered in rhe time specified about 18 days. Would definitely buy more pieces from this company!
Response from KoseimoissanitesSep 1, 2026
Thank you so much for your thoughtful feedback and review! We are thrilled to hear that you love your three-stone trilogy ring and that the band quality and packaging met your expectations. Regarding customer service—we can assure you that our team is made up of real people! We work hard to ensure every question is answered thoroughly, but we are always looking for ways to make our communications feel warmer and more personal. If you need help selecting or designing the perfect wedding band to sit flush with your low-basket setting, please reach out to us directly. We’d be delighted to guide you through matching options, so your ring set fits together seamlessly. Thank you again for choosing us for such a special piece. We look forward to crafting your next design!