Diamond Diana Firm Natural Latex Lux Euro Top 14" Mattress
Diamond Diana Firm natural latex mattress handcrafted in California. Organic cotton cover, natural wool comfort layers, and pocketed coil support. 14-inch euro top profile. 20-year warranty.
or $148/mo with 0% APR financing for 24 months
California-made since 1946.
Diamond Mattress is a 4th-generation family-owned manufacturer based in Southern California. They are one of the few mattress companies in America that makes their own coils, processes their own foams, and sews their own covers — all under one roof.
Vertically Integrated Manufacturing
Diamond makes their own pocketed coils, processes their own memory foam, and cuts and sews their own fabrics in-house. Most mattress brands outsource these components. Diamond controls quality at every stage of production.
Certified Clean Materials
GREENGUARD Gold, OEKO-TEX, CertiPUR-US, and ECO INSTITUT certified. Diamond uses REPREVE recycled fibers in select models. Every material is tested for chemical safety and environmental impact.
4th Generation Family Ownership
The Pennington family has owned and operated Diamond Mattress since 1946. Fourth-generation president Shaun Pennington leads a company that has never been sold to a conglomerate or private equity firm.
20-Year Warranty + 120-Night Trial
Diamond offers one of the longest warranties in the industry. Sleep on it for 120 nights. If you do not love it after 30 days, exchange it for a different Diamond model at no additional cost.
Why natural latex outperforms foam.
Natural Talalay latex is a fundamentally different material from memory foam. It is harvested from trees, not synthesized in a lab. It breathes, bounces, and lasts longer. The Diana is Diamond's flagship natural latex mattress.
Natural Talalay Latex
Harvested from rubber trees and processed using the Talalay method for consistent open-cell structure. Naturally hypoallergenic, antimicrobial, and resistant to dust mites. Lasts 15-20 years without developing the body impressions that shorten memory foam lifespan.
Sleeps Cooler Than Memory Foam
The open-cell structure of Talalay latex allows continuous airflow through the material. Unlike memory foam, which traps heat in its closed-cell structure, latex dissipates heat naturally. Combined with organic wool and cotton layers, the Diana sleeps noticeably cooler.
Responsive, Not Slow-Recovery
Latex bounces back immediately when you change position. Memory foam slowly conforms and slowly releases. If you move frequently during the night or dislike the sinking feeling of memory foam, latex provides cushioning without the trapped sensation.
Built from the ground up in Southern California.
Diamond manufactures their own coils, processes their own foams, and sews their own fabrics. Every component is made or finished under one roof in their Rancho Dominguez factory.
Organic Cotton Cover
A naturally breathable organic cotton cover with hand-stitched quilting. No synthetic fabrics against your skin. Diamond cuts and sews their own covers in their California factory.
Natural Wool Comfort Layer
A natural wool layer provides moisture-wicking and temperature regulation. Wool absorbs up to 30% of its weight in moisture without feeling damp, and naturally regulates temperature across seasons.
Natural Talalay Latex
Multiple layers of natural Talalay latex provide responsive, buoyant support. Natural latex layers configured for firm support with minimal sinking. The Diana uses a slightly different latex configuration than the Lucille at a lower price point, while maintaining the same natural material commitment.
Diamond Proprietary Pocketed Coils
Diamond is one of the few mattress companies that manufactures their own pocketed coils. Each coil is individually wrapped and zoned across the sleep surface for targeted support and motion isolation.
Reinforced Edge Support
High-density foam encasement around the perimeter provides edge-to-edge stability. Sit on the edge without sinking, and use the full sleep surface without roll-off.
Three heights, three comfort levels.
Every Diana shares the same natural latex, organic cotton cover, and natural wool. The three models differ in height, latex configuration, and comfort level.
Lucille Firm 14" — 7-8/10
Best for: Back sleepers, stomach sleepers, heavier sleepers (200+ lbs)
Flat, responsive support. You float on the surface rather than sinking into it. The latex pushes back against body weight.
Currently Viewing
Lucille Medium 15.5" — 5/10
Best for: Combination sleepers, couples, all-position sleepers
Balanced support and cushioning. Enough give for side sleeping, enough support for back sleeping. The most versatile Lucille.
View Medium 15.5"
Lucille Plush 16" — 3-4/10
Best for: Side sleepers, lighter sleepers, pressure-sensitive sleepers
Deep cushioning with responsive bounce. The latex cradles shoulders and hips without the slow-sinking feel of memory foam.
View Plush 16"Built for the natural sleeper.
The Diana Firm is for sleepers who want firm support from natural materials, not synthetic foams. If you value what goes into your mattress as much as how it feels, the Diana is built for you.
Back Sleepers
The firm natural latex provides flat, responsive support that keeps the spine aligned without sinking. Latex pushes back against body weight rather than slowly conforming like memory foam.
Natural Material Seekers on a Budget
The Diana delivers natural latex, organic cotton, and natural wool at $350 less per queen than the Lucille. Same commitment to natural materials, more accessible entry point.
Hot Sleepers
Natural latex sleeps cooler than memory foam thanks to its open-cell structure. The organic cotton and wool layers add breathability and natural moisture wicking.
Durability-Focused Buyers
Natural latex lasts 15-20 years without developing body impressions. Combined with Diamond's 20-year warranty, the Diana is a long-term investment that holds its value.
From delivery to warranty.
Every purchase includes premium service. Diamond backs it with the longest warranty in our store.
Free White Glove Delivery
Free delivery to your room of choice anywhere in greater Los Angeles. Our team sets up your new mattress and removes your old one at no extra cost. Same-day delivery often available.
120-Night Comfort Exchange
Sleep on the Diana Firm for up to 120 nights. If it is not the right comfort level after 30 days, exchange it for a different Diamond model or exchange for a different model at no additional cost.
20-Year Manufacturer Warranty
Diamond Mattress offers an industry-leading 20-year warranty covering manufacturing defects. LA Mattress Store coordinates any warranty claims on your behalf.
Try it before you buy it.
Natural latex has a distinct feel that is best experienced in person. As an authorized Diamond Mattress dealer, we carry the full Lucille lineup in all five of our Los Angeles showrooms. Walk in, lie down on all three firmness levels, and take your time.
- Compare all three Lucille firmness levels side by side
- Expert sleep consultants who specialize in natural latex
- Price match guarantee on every Diamond Mattress model
- Free White Glove delivery, setup, and old mattress removal
- Same-day delivery available throughout Los Angeles
Lucille vs. Diana.
Diamond offers two natural latex collections. The Lucille is the premium flagship at $3,899 Queen. The Diana offers natural latex at $3,549 Queen with slightly different latex configurations.
| Diana Firm 14" | Diana Medium 15" | Lucille Firm 15" | |
|---|---|---|---|
| Height | 14" | 15" | 15" |
| Firmness | Firm (7-8/10) | Medium (5/10) | Firm (7-8/10) |
| Latex | Natural Talalay | Natural Talalay | Natural Latex |
| Cover | Organic Cotton | Organic Cotton | Organic Cotton |
| Warranty | 20 Years | 20 Years | 20 Years |
| Best For | Back sleepers, firm latex | All positions | Premium natural latex |
| Price (Queen) | $3,549 | $3,549 | $3,899 |
What sleepers are saying.
4.6 out of 5 · 47 verified reviews
Highly recommend this mattress! It’s the perfect balance between soft and firm—feels supportive without being stiff.
Love how thick this mattress is! It makes my bed feel so luxurious, and I sleep so soundly now.
Honestly, I sleep better than ever! No more tossing and turning. It’s a game changer!
If you’re a side sleeper, this is the one! My hips and shoulders feel great, and I wake up feeling well-rested.
Super high-quality materials. Feels like a mattress from a luxury hotel! Definitely worth the investment.
or $148/mo with 0% APR financing for 24 months