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    Ultimate Diamond

    4.9 (527 reviews)
    ModerateJewelry, Watches
    Closed 11:00 am - 6:30 pm

    Ultimate Diamond Photos

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    Reviews With Photos

    Jean O.

    Ultimate Diamond provided a once in a life time experience. They did an amazing job with my now Fiancé's, engagement ring. It is absolutely beautiful. While shopping in the Diamond District the moment I stepped foot into the store I felt the "this is it vibe" in my gut. Billy helped me through the entire process. He was very knowledgeable and made me feel comfortable throughout the whole experience, explaining each step of the process of purchasing an engagement ring. He never made me feel pressured in any way and just wanted to ensure that ultimately I was happy with the final product. After showing me a variety of diamonds of all shapes, sizes, clarity and color, finally one stood out and I knew it was the one. We are thrilled with the outcome and hope to work with them again in the near future. I would highly recommend for any jewelry needs. They are a 10/10.

    My engagement ring and wedding band
    May M.

    My fiancé and I are tough customers and have been ring shopping in the diamond district for months!! Then we were recommended by a friend to check Ultimate diamond. We went in on a Saturday without an appointment and Choi helped us out when we walked in. She answered all the million questions and concerns we had & explained everything thoroughly. I told her exactly what I wanted in my engagement ring (even though I changed my setting twice) she was extremely patient with me. if you ever stop by, ask for Choi! She is so respectful of your thoughts and the absolute best there! We even bought my wedding band here & my sister got her engagement ring from here as well from Choi. We will continue to refer our friends to Choi & Ultimate diamond! Thank you Choi for creating the PERFECT diamond engagement ring!

    Michelle Y.

    I originally found Ultimate Diamond on yelp and so happy I did. We worked with Brian, who immediately made us feel at ease that he had our best interests in mind. He taught us how to understand the clarity and color metrics and what ranges best fit our needs. We are picky customers, so it took a few visits -- then Brian pulled off a miracle and found a diamond in Israel that fit the cut proportions we were looking for within the budget we were hoping to spend. Thank you so much to the whole team -- we really love the ring!

    Moe M.

    My husband and I did not know where to start or knew anything about diamonds or engagement rings- we were completely clueless. We live in Houston, Texas and visited a numerous amount of jewelry stores but always left not satisfied. My sisters engagement ring is from Ultimate so when I told her I could not find anything up to par in Texas, she recommended I go to Choi from Ultimate Diamond and I will say, it was the BEST decision we have ever made. We flew into New York to meet with Choi and it only took one visit to start the process of customizing my engagement ring. She was very informative and patient with us and we did not feel rushed or forced into anything which is what I loved about this place. This review is long overdue (we got engaged 11-15-19) but Every time I look at my ring, I have this huge smile on my face. Thank you for making my dream come true Ultimate Diamond!

    Demmi C.

    My fiance got my engagement ring from Ultimate, and I am absolutely obsessed with it. He went to every single shop in the diamond district and did an extremely thorough cost analysis of all the options available, so I know for sure Ultimate was a great option from the start. However, what makes Ultimate even better in my mind is how they helped us out when I lost my first engagement ring (oops) and had to get a replacement through insurance. They worked with my fiance to get the PERFECT replacement diamond in the exact same setting, and in fact the new diamond was even bigger and more beautiful because apparently prices went down slightly during covid and our insurance company gave us our original budget to work with. Lastly, I then went back to the store myself to sort out our engagement bands. Nirvana helped me out and was very patient and kind the whole time. I ended up picking the perfect bands out and feel so excited to collect them! This is besides the point, but the owner's dog is also really REALLY cute. Thanks for the great service and I will definitely be recommending to all my friends who are getting engaged soon ;)

    Andrew L.

    Found this place through Yelp and the reviews don't lie. - place is open on the weekend (huge if you compare it to all the other places in diamond district) - staff is friendly and they're knowledgeable about what they're selling - has a good selection on hand (naturally mined & lab grown diamonds). Diamond consultant: Diana From my personal experience, the whole transaction went smoothly and professionally. I originally met with the owner since everyone was busy, but was later handed off to Diana. After buying an engagement ring, that my fiancé loved, we are now working on picking out our wedding rings with Diana. She's hilarious, knows her stuff and was super helpful. She worked with us to get the best ring for the budget I had. Any issues in regards to to the ring (fitting, thickness of the band, etc) she was able to fix/change even after taking payment and the ring had been in our hands for a couple weeks. Without making this longer than it already is, I just recommend going to these guys for your jewelry needs. Request Diana if you can she a real one.

    3 stone round cut engagement ring
    Lauren S.

    My fiancé and I have had such a great experience with Ultimate over the past year! Last winter we went engagement ring shopping and their team spent nearly 2 hours walking through process and helping us choose my dream ring. We knew that when the time came to purchase wedding bands we had to go back to Ultimate. Nirvana was incredibly helpful and attentive throughout the shopping process. I wasn't set on a band style upon arrival, but she had great insights (both functionality wise and aesthetic wise) to help me choose the perfect style! Would recommend Ultimate Diamond to anyone in NYC looking to tie the knot. PS anytime I'm in midtown, I pop by the store for a quick ring cleaning. I'm in and out in minutes and my ring sparkles like new afterward!

    Fedaa J.

    My now fiancé and I went to the diamond district looking for the perfect ring and just an overall good experience and we got just that at Ultimate Diamond. We walked in after going to a couple of places and had people pushing us towards certain styles and sizes when I just wanted what I asked for. We walked in and were greeted by Diana and she wasn't pushy and just listened so I saw her beautiful ring and asked if I can try something similar and she gave me options for the different settings until I found the one. They also made the process very easy for my fiancé and they were very accommodating. Overall very happy with my ring and experience. Thank you again Ultimate for making this process enjoyable.

    Josh G.

    Where's to begin. From the moment we walked in they made us feel so comfortable. They helped educate myself and my fiancé on rings and diamonds and we're not pushy sales people. They let us think it over and talk things through over the phone. Kareem, was top notch. He was such a gentleman, such a great business person and his helpfulness was amazing. I cannot thank him, Gem, Diana, and the whole Ultimate team enough. They are an amazing jeweler and I would recommend them to anyone and everyone!

    Wedding bands

    High quality services from Billy and the team on helping us find the best wedding bands. They were patient, friendly and informative throughout the entire process. Highly recommended!

    3 carat emerald diamond with (2) .8 carat heart sapphires.
    Christina Z.

    We worked with Gem to design the absolute perfect engagement ring! My fiancé and I were already engaged but wanted to design a ring together. Gem was phenomenal. He walked us through the process and explained everything. He was completely transparent and made us feel like family. He gave us his suggestions but told us to think about it. We went back 3 times before we finally picked the stones and were ready to have the ring made. We just picked it up today and I couldn't stop shaking. It fit perfectly and looked more amazing in person than I could've imagined. Gem picked the most perfect stones and was absolutely spot on with the size and color of the heart sapphires. I can't thank you enough! We'll be back shortly for our wedding bands. I highly recommend Gem and the team at Ultimate Diamond. They're going to be our family jeweler from now on!

    AP Royal Oak
    Edmund L.

    Came by to buy an Audemars Piguet Royal Oak and was helped by Avi. Got very good service and information from him. When I made my purchase he even showed me how the links to the bracelets are removed, which is an experience you wouldn't get even at the AP boutique.

    Engagement Ring prior to mounting

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    Thank you Brandon, glad to hear you enjoyed your experience with us!

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    But it snowed the night before we went, and nearly everywhere was closed except for Ultimate Jewelry Designs.

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    Grand Central Watch - Omega Seamaster Professional

    Grand Central Watch

    4.3(206 reviews)
    0.2 miMidtown East
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    NEW YORK CITY/Midtown: Tucked inside Grand Central Terminal, Grand Central Watch is a true…read morehorological institution, family-owned and expertly run for more than 70 years. Their reputation for watch repair is stellar, with the skill to handle everything from quick battery swaps and band adjustments to intricate restorations and full-service overhauls across all makes and models. If you are looking to sell your piece, they offer trusted appraisals and authentication services. On the flip side, if you are ready to elevate your collection, their curated selection of restored vintage watches and new timepieces is worth browsing. They even repair jewelry, making this a one-stop shop for treasured pieces. All this is backed by a great team with the best customer service. One of our favorite things is their social media content. Their videos are packed with insight, history, and behind-the-scenes knowledge that makes the world of watches feel even more fascinating. Grand Central Terminal is dog friendly, and the team here loves welcoming four-legged visitors. You will find them down the 45th Street passageway near Track 38, ready to help with anything your watch needs. Can't make it in? Their mail-in service keeps your timepiece ticking no matter where you are.

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    Ultimate Diamond - jewelry - Updated May 2026

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