1. Diamond Nails

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Castro Valley, CA

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Diamond Nails

3.5 (288 reviews)
Closed • 9:30 am - 7:00 pm
Updated 2 weeks ago

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Services - Diamond Nails

Manicure

Manicure and pedicure

Nail fill-in

Diamond Nails Photos

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Recommended Reviews - Diamond Nails

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Reviews With Photos

Bebe D.

Ready to celebrate America 250! Kelly is amazing! She makes me look like a millionaire!

Acrylic beachy nails
Melany M.

Amazing nails!! I loved my nails so so much thank you! Definitely will be coming back for a new set. ladies were wonderful and friendly!

Jenna L.

I really love this nail salon. All of the ladies are super friendly and they always get me in and out quickly. I would say it's probably my favorite nail salon in the East Bay area. Julia has done my nails the last few times and she always does a thorough and great job. They have a huge variety of colors to choose from. It's also always a relaxing and decompressing environment. The prices are also very fair. I've been to other salons in the area where they definitely up charge for every little thing. The only downside of this place is sometimes it's hard to find parking. But I always go very early in the morning so I never have an issue. I will definitely be coming back here!!! Julia is my go to girl and she's super friendly and great!

Kelly!!!!!! You ready for an amazing job. Go to Kelly. Kelly has done my nails for over a decade. I couldn't be more excited. I lucked up and got an appt last minute once I found her. Service is amazing. Hospitality is making a come back. Being pampered is part of the experience. It's our self care. Take good care of yourself and go see Kelly!

I have been coming here for years. These ladies are fantastic. I got a 4th of July nail design. The lady hand painted it. Its absolutely gorgeous!!

Enjoying the massage chair before and after my manicure and pedicure
Melissa L.

I've come to Diamond Nails since I moved to California in 2010. These ladies are the absolute best. Relaxing massage with pedicure and Lisa serves flawless nails every time. Beautiful atmosphere and chill place to be 7 days a week.

Cat eye nails!

Just had my nails done with Kelly at Diamond nails. She did a fantastic job with cat eye nails. I'm so pleased I found her.

Thank you Kelly!

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Reviews are mixed. Many highlight the friendly staff, a clean and well-decorated salon, and quality manicures and pedicures.

Read the full review summary in the app

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11 years ago

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7 years ago

This pLace is a hell hole. Terrible, if any, customer service. Had a few issues with infected toenails etc...will never go back!

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12 years ago

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7 years ago

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10 years ago

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7 years ago

Great! service, friendly welcoming staff and clean environment. Definitely will come back.

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17 years ago

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11 years ago

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11 years ago

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10 years ago

Love this place, my nail girl hooked it up!!!!! I can't wit to go back it's like she played violin with my toes when massaging my feet!!

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6 years ago

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9 years ago

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9 years ago

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7 years ago

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10 years ago

Continuously go back to this shop! Kathy is great and makes my nails gorgeous! Highly recommended for quality and value!

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9 years ago

Friendly regardless of who you are. Linda and Lisa are really nice and asked about your family.

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12 years ago

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Page 6 of 8

Ask the Community - Diamond Nails

Hi, I've been looking for Kelly (who used to work at Mimi's), does she now own Diamond Nails?

I'm not sure if Kelly worked at Mimi's, but she used to own The Nail Salon and now owns Diamond Nails.

Don’t See Your Question? Ask Away!

Review Highlights - Diamond Nails

“Linda (the owner) is always very accommodating and Lisa and the other technicians are very nice.”

Mentioned in 35 reviews

Read more highlights

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If you're a first-timer like me, make an appointment with Jenneath! She is so talented and makes…read moreyou feel super comfortable during the entire process. I was recommended by my boss to come see Jenneath since she has been getting her lashes done by her for a while, and they look great! I'm going to Disneyland for the weekend and didn't want to wear too much makeup, so I decided to give eyelash extensions a try, and they look AMAZING! I am so happy with the results! They give me the perfect amount of POP to my eyes without having to wear any eye makeup. My natural lashes are super sparse and grow straight down, so I always have to curl them and apply mascara, or for any special occasions I'll wear falsies. Now I can save myself all that time and effort and just wake up with bomb lashes! Thank you, Jenneath, for the beautiful lashes and the great service :)

So I'm a regular eyelash extensions woman. I've been getting eyelash extensions for the past 3…read moreyears. For 2 of those years, I was going salon to salon and couldn't find the perfect person UNTIL I CAME TO JEANETTE! I've been seeing her for almost a year now (I come regularly every 3 weeks) and she is TRULY THE BEST! She uses the best quality products and is just amazing. I have stubborn straight Asian lashes, but that's not an issue for Jeannette. She does "volume lashes" for me shchi means she puts three extensions PER LASH. I get compliments almost daily on my lashes. For my wedding, Jeannette made them a little longer and it was perfect! She is a superstar. After I moved from CV, I thought about looking elsewhere but I know nobody can do it as great as Jeanette so I will commute the hour to see her!

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I've been going to Jenny at Brow+ K-Beauty Lab in Castro Valley for about a year now, and I can…read morehonestly say it has become one of my favorite self-care rituals. I stay consistent with my monthly facials, and the difference in my skin has been incredible. My skin is glowing, healthy, and aging beautifully! Since meeting Jenny, I always renew my 5-visit pass - who doesn't want to be pampered and glowing?! When I first started in late 2025, I didn't realize how much intentional self-care could benefit not only my skin, but my soul too. Each visit feels like an investment in myself. Jenny is absolutely amazing. She is attentive and intentional throughout the entire session, carefully prepping my skin and giving it the love and care it needs. I always leave feeling refreshed with that beautiful, glass-like glow! The studio on Redwood Road in Castro Valley is chic, stylish, comfortable, and impeccably clean, which makes the entire experience even better.

Booked a Tuesday appointment for a back facial, because I've been searching everywhere for one in…read morethe East Bay and I was so excited when I found her website listing one for $120 for 60 minutes! Booked through the website, Paid my deposit and everything and was super excited for the experience. The description is: "Treat your back to a luxurious Back Facial that improves elasticity, hydration, and texture while stimulating collagen production for firmer, more youthful skin. With deep cleansing, exfoliation, and nourishing masks, this rejuvenating treatment revitalizes dry or uneven skin on your back, leaving it smoother and brighter." Got the confirmation text and email and confirmed everything. When I got there, Jenny very kindly informed me that she actually no longer does the back facials, she only does face facials now. I was definitely disappointed, but I had already driven there and had the day off, so I opted for the 10 step Korean facial instead ($199 before tip). She said that she was currently doing an offer for $199 instead of $300+, so I figured why not. This one is 90 minutes instead of 60 minutes. If it's your first time coming, I would recommend getting there 5 mins ish before your appointment so you can park and find the entrance to her room - there's a lot of other businesses here so I did have to take a lap to find the right door in the hallway. Pros: The whole facial experience was actually pretty great - the whole place is clean, easy parking out front. And it's very involved, in a good way. it includes massage to the face, shoulder, neck, arms, as well as all the regular facial stuff like extractions and a mask. She also uses the Plasonic machine (which can feel hot like it's burn/zapping your skin) but you can tell her if it feels too hot and she'll change the settings. She got rid of my blackheads with an ultrasonic skin scrubber and extracted all my whiteheads. There's also red light therapy. The studio is super clean, and Jenny is super sweet and nice, definitely easy to trust the Korean lady. I definitely would not mind coming back for another facial - I left there with my skin feeling super soft, she gave me some skincare tips, and it's a great location if you live in Castro Valley or San Leandro. I would definitely recommend wearing comfortable and thinner pants, because it gets pretty hot in the room with all the treatments. My highest praise would include that the extraction part wasn't as painful as other facials I've had, and the shoulder/neck/arm massage was surprisingly really helpful in relieving some pain I had from work! Cons: - I think it was really hard for me to give a 5, since I feel like I fell for false advertising thinking I was coming for a back facial. Things worked out in the end and I was due for a facial anyway - but I would have done some things differently (like not washed my hair beforehand, since it got a lot oilier after the scalp massage) if I had known I wasn't getting the back facial. Her service is great and I would highly recommend her for facials - and it sounds like her microblading is well appreciated too - but just be aware there are NO back facials here.

Photos
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Diamond Nails - othersalons - Updated October 2026

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