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Diamond Mattresses in Los Angeles

Made in Southern CaliforniaFamily-Owned Since 1946

Built right here in Los Angeles since 1946. Diamond Mattress delivers CertiPUR-US® certified foams, pocketed coil hybrids, and advanced cooling technology at 30–50% below comparable national brands — because you're paying for the mattress, not the marketing.

40 mattresses available

  • Made in Southern CaliforniaEvery Diamond mattress is built in their Los Angeles-area factory. Shorter supply chain, fresher materials, direct quality control.
  • CertiPUR-US® CertifiedAll foams independently tested — no harmful chemicals, low VOC emissions, built to last. One of the most meaningful certifications in mattresses.
  • 30–50% Below National BrandsNo nationwide shipping markup. No big-brand ad budget. Just quality materials at honest prices from a family business that's been here since 1946.
0% APR Financing Available — Local quality, flexible payments. Try our 120-night comfort trial risk-free. Financing details
Price Range:
FoamAll-FoamFrom $299CoolingGel CoolingFrom $399FirmFirm SupportFrom $349HybridHybridFrom $599

40 Diamond mattresses

Shop by Type

Diamond offers foam, hybrid, cooling, and firm models — all built locally in Southern California.

All-FoamDeep contouring, motion isolationFrom $299Best for: Side sleepers, light sleepers, budget buyersShop All-FoamMost PopularHybridCoil + foam — best of both worldsFrom $599Best for: Couples, hot sleepers, bounce preferenceShop HybridCooling GelEngineered for hot sleepersFrom $399Best for: Hot sleepers, Southern California climateShop Cooling GelFirm SupportSolid, durable, spine-alignedFrom $349Best for: Back & stomach sleepers, heavier body typesShop Firm Support

Why Buy Local?

Diamond Mattress has been manufacturing in Southern California since 1946. Here's why that matters to you.

LA Factory

Diamond's manufacturing facility is in the Los Angeles area. Your mattress was built locally — not shipped from overseas or cross-country.

Short Supply Chain

Local production means fresher materials and faster turnaround. No months-long supply chain delays or quality risks from long-distance shipping.

Family Business Since 1946

Nearly 80 years of mattress-making expertise, all under one family's ownership. They stand behind every mattress they build.

Lower Environmental Impact

Building locally reduces the carbon footprint of shipping. You're getting a quality mattress and supporting sustainable local manufacturing.

No Brand Tax

No national ad campaigns, no celebrity endorsements, no nationwide distribution overhead. Savings go into better materials, not marketing.

LA Community

When you buy Diamond, you're supporting a Southern California business and the jobs it creates in the LA area. That matters to us too.

Quality Certification

What is CertiPUR-US®?

CertiPUR-US® is the most important independent certification for foam mattresses. Every Diamond mattress foam is certified, which means it has been tested and verified by an independent lab.

No ozone depleters
No PBDE flame retardants
No mercury, lead, or heavy metals
No formaldehyde
Low VOC emissions for indoor air quality
Durability tested to industry standards
CertiPUR-US®Certified FoamAll Diamond mattress foams
For Hot Sleepers

Diamond Cooling Technology

Built for the Southern California climate. Diamond's cooling gel foam mattresses are engineered to draw heat away from your body so you sleep at a neutral temperature all night.

  • Gel-infused memory foam layers absorb and dissipate body heat
  • Open-cell foam structure allows better airflow than traditional memory foam
  • Breathable cover fabrics promote surface-level cooling
  • Hybrid models add pocketed coils for maximum airflow through the mattress core
Shop Cooling Models
Gel-InfusedFoam layers
Open-CellAirflow design
BreathableCover fabric

Diamond vs National Brands

Same quality materials. Half the price. Here's why.

FeatureDiamond MattressNational Brands
ManufacturingMade in Southern CaliforniaMass-produced overseas or nationwide
Price Point30–50% below comparable specsPremium markup for brand recognition
MaterialsCertiPUR-US® certified foamsVaries — not always certified
Supply ChainShort — LA factory to your doorLong — overseas or multi-state
Local SupportTry in all 5 LA showroomsOnline-only or limited showrooms
HeritageFamily-owned since 1946Corporate, PE-backed, or startup

Bottom line: national brands spend 20–40% of retail price on advertising. Diamond spends it on materials instead.

Foam or Hybrid?

The most common question. Here's the honest answer.

All-Foam Diamond
FeelDeep contouring, body-conforming. Sleep "in" the mattress.
MotionExcellent isolation — partner movement stays contained.
TemperatureCan sleep warmer without gel layers. Choose cooling models if needed.
Best ForSide sleepers, light body types, budget buyers, motion-sensitive sleepers.
PriceFrom $299 — best entry value
Hybrid Diamond
FeelResponsive bounce + foam comfort. Sleep "on" the mattress.
MotionPocketed coils reduce but don't eliminate transfer. Good for most couples.
TemperatureCoil core allows airflow — naturally cooler sleeping surface.
Best ForCouples, heavier body types, hot sleepers, those who want bounce.
PriceFrom $599 — best hybrid value

Can't decide? Try both in person at any of our 5 LA showrooms.

Try Diamond Before You Buy

Every Diamond mattress is available to try in person at all five of our LA showrooms. Lie on as many as you need for as long as you want — no pressure, no rush.

  • Compare foam vs hybrid side by side
  • Test every firmness level — plush through firm
  • Try cooling gel models vs standard foam
  • Our specialists know every model — ask anything
Find Your Nearest Showroom
All Locations Open:

Mon–Fri 10am–9pm • Sat–Sun 10am–8pm

(800) 218-3578

Diamond Mattress Questions Answered

From our sleep specialists at LA Mattress Store.

Diamond mattresses are manufactured right here in Southern California, in the Los Angeles area. Their factory has been operating since 1946. This local production means shorter supply chains, fresher materials, and direct quality control at every step. When you buy a Diamond mattress from us, it was likely assembled within a few miles of your home.