Diamond Mattress Discount Codes & Verified Offers for October 2026
Browse 27 manually checked Diamond Mattress Promo Codes for October 2026, including Discount Codes, current discounts and exclusive deals. Expired offers are removed regularly.
Diamond Mattress offers 0 coupon codes and 27 deals as of October 2026. Today's top offer: Military Discount: 20% Off All Items. Codes are verified and updated daily.
Active military personnel and veterans receive 20% off. Verification of military service is required.
Selected floor models are available for purchase at a special rate. Quantities are very limited.
Purchase a Flurry Lux Cooling Hybrid mattress and get free cooling pillows. This offer is automatically applied.
Sleep better with up to 20% off hybrid mattresses this week, including cooling and natural latex options.
Discover discounted mattresses at reduced prices. These items are available while supplies last.
First responders receive a 15% discount on their order. Verification of status is required to access this offer.
New customers receive a discount on their initial purchase. Sign up for the newsletter to get this offer.
Police, fire, and EMS personnel get a discount. Valid identification is necessary.
Purchase any mattress and receive two complimentary pillows. This offer provides added value.
Upgrade your sleep with $300 off select Diamond Mattress memory foam mattresses. Experience comfort and support tonight.
Medical professionals can receive a discount on their purchases. Present valid ID to qualify.
Teachers qualify for a 15% discount on mattresses and accessories. Proof of educator status is required.
Certain adjustable bases are available at a 15% discount. This applies to specific models listed.
Black Diamond mattresses are available starting at $899. This pricing applies to the base model of the series.
Educators are eligible for a percentage off their order. A valid teacher ID is needed.
Grateful Hybrid mattresses begin at a price point of $999. This offer is for the entry-level size.
Split King Mattresses are available with a $200 price reduction. This offer applies to all split king models.
Upgrade your sleep with 20% off Natural Latex Mattresses. This discount applies to a range of premium sleep solutions for ultimate comfort.
Receive a complimentary mattress protector with any mattress purchase. This is a limited-time bundle deal.
Sleep soundly with $300 off Dreamstage Hybrid Mattresses. Experience comfort and support for less.
Receive complimentary delivery for any mattress order. No minimum purchase is required for this benefit.
All mattress purchases qualify for free standard shipping. No minimum purchase amount is required for this offer.
Students can get 15% off their mattress purchase. A valid student ID is necessary for verification.
Queen size mattresses are discounted by up to $350. The exact discount depends on the mattress model chosen.
Select memory foam mattresses are priced at less than $799. This includes specific models and sizes.
Celebrate Presidents Day with a significant discount on many mattress models. This is a seasonal promotion.
During the Memorial Day sale, receive up to $400 off select mattresses. The discount varies by mattress model.
Customer Reviews
Comfortable and arrived fast
Needed a new mattress, so I went with the Grateful Hybrid. It's super comfortable, really like it. It arrived two days earlier than the tracking said, which was cool. The whole process was pretty smooth, no complaints. I'd definitely tell a friend to check them out if they need a mattress.
Love my new bed!
Oh my goodness, I am so happy with my new Black Diamond Mattress! It's incredibly comfortable, I'm sleeping so much better now. The delivery was surprisingly quick, it actually arrived two days earlier than the tracking said. Setting it up was simple, and it looks fantastic. I will absolutely be buying from Diamond Mattress again in the future, and I've already told my sister about them!
Great value on new mattress
I was really looking for a good deal on a new mattress and hit the jackpot with their Memorial Day sale. I got a Flurry Lux Cooling Hybrid for a great price, saving a few hundred bucks. Plus, they threw in a free mattress protector bundle, which saved me even more. It felt like I got a lot of bang for my buck. The delivery was fast, and setting it up was easy. I definitely feel like I got excellent value for my money, and the mattress is super comfortable.
Still a great bed
This is my third purchase from Diamond Mattress, this time I got the Ethos Natural Hybrid. I've bought from them before during other holiday sales, and they've always been consistent. The quality is reliable, and the delivery was on time as usual. They're my go-to for mattresses now, never had an issue with any of my orders.
Quick delivery, comfy pillow
I ordered a Shredded Memory Foam Pillow. It arrived quickly, well-packaged. The pillow is comfortable and supportive. Exactly what I needed. No fuss, good product.
Good mattress for the price
I bought the Flurry Lux Cooling Hybrid during their Presidents Day sale. Got a decent discount, saved about $300, which made it much more affordable than some other brands I was looking at. Free shipping was a nice bonus too, didn't have to worry about extra costs there. It feels like a solid mattress for what I paid, definitely felt like good value overall.
Love my new bed!
I just got the Black Diamond Mattress and it's incredible! The comfort is amazing, I slept so well last night. It was such an easy purchase, and the delivery team was really efficient. I'm so happy with it. I will absolutely shop here again!
Good mattress, decent delivery
I ordered a Grateful Hybrid mattress during their Presidents Day sale. The website was easy enough to navigate, and the discount code applied without any issues. Shipping was free, which was a nice bonus. The mattress arrived in about 8 days, a little slower than I expected, but it was well-packaged. Setup was straightforward, and the mattress itself is quite comfortable, a noticeable upgrade from my old one. I also got the free pillows, but they were just okay. Overall, I'm happy with the purchase. The quality seems solid for the price I paid.
Detailed thoughts on my purchase
I ordered a Queen Memory Foam Mattress and a set of Bamboo Sheets. The ordering process on their website was straightforward and easy to navigate. Shipping took about a week, which was within the estimated timeframe. The mattress arrived well-packaged, and it expanded without any issues. The memory foam is quite comfortable, providing good support, though it did have a slight off-gassing smell for the first day or so, but that dissipated quickly. The bamboo sheets are soft and feel high quality. I also contacted customer support with a question about cleaning the mattress, and they were responsive and helpful. Overall, a positive experience, and I'm happy with the quality of both products.
Diamond Mattress Community Discussion
Share tips, ask questions & help fellow shoppers save more
Does Diamond Mattress do financing? Like with Affirm or something? My budget's a little tight right now.
Hey, wondering how long it usually takes for a mattress to ship out? Thinking about getting the Flurry Lux.
Is the Sage Sleep any good compared to like, a Casper? I'm looking for a new memory foam but not sure which way to go.
Are their mattresses actually made in the US? I'm trying to buy American if I can.
what's the deal with returns if I don't like it? Is it a pain to send back?
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