Diamond Dreamstage 2.0 Collection Tranquility Medium Titanium Memory Foam Euro Top 16" Mattress
Dreamstage 2.0 Tranquility innerspring mattress with titanium memory foam euro top. 16-inch medium comfort with innerspring support and titanium cooling. 20-year warranty.
or $58/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.
Titanium foam comfort.
The Dreamstage 2.0 Tranquility is engineered around cooling. breathable knit cover, Titanium Memory Foam, and Titanium Memory Foam work in concert to actively remove body heat for 12+ hours. This is not passive cooling. It is active temperature regulation built into every layer. Available as a hybrid mattress with Diamond\'s Innerspring Coil System.
Titanium Foam Cooling Bands
Diamond's signature cooling technology. Advanced mineral bands actively draw excess body heat away from the sleep surface. Not a gel layer, not a phase-change cover. Active mineral-based heat removal that works for 12+ hours continuously.
Breathable Knit Cover
Cooling fibers woven directly into the fabric create a surface that is cool to the touch immediately. Removable zip-on/off design for easy washing. The first layer of the Tranquility's multi-layer cooling system.
Titanium Memory Foam
Memory foam infused with titanium for enhanced thermal conductivity. Titanium moves heat away from the body faster than standard gel-infused foams. Provides pressure relief without the heat penalty of traditional memory foam.
Titanium comfort, innerspring support.
Every layer of the Tranquility is designed around cooling and support. Diamond manufactures their own coils and processes their own foams in their Southern California factory.
Breathable Knit Cover
A breathable, removable cover with cooling fibers woven into the fabric. Zip-on/off design for easy cleaning. Cool to the touch from the moment you lie down.
Titanium Memory Foam
Diamond's signature cooling technology. Advanced mineral bands actively draw excess body heat away from the sleep surface for 12+ hours of temperature regulation. This is the key differentiator of the Dreamstage 2.0 line.
Titanium Memory Foam
High-density memory foam infused with titanium for enhanced heat conductivity and body-contouring support. Provides weightless pressure relief while moving heat away from the body.
Innerspring Coil System
Diamond's proprietary individually wrapped coil system with targeted support zones. Boosts airflow through the mattress core, provides motion isolation, and delivers edge-to-edge support.
Foam Encasement Edge Support
High-density foam border around the entire perimeter. Provides a firm seating edge and maximizes the usable sleep surface from edge to edge.
Three comfort levels on a 16-inch innerspring platform.
Every Tranquility shares the same breathable knit cover, Titanium Memory Foam, Titanium Memory Foam, and Innerspring Coil System. The difference is how the foam layers are configured for firmness.
Lucille Firm Tight Top — 7-8/10
Best for: Back sleepers, stomach sleepers who run hot
Firm hybrid with active titanium cooling. Titanium foam contours subtly while the innerspring coils provide flat, stable support.
Currently ViewingLucille Medium Euro Top — 5/10
Best for: All-position sleepers, couples who run hot
Balanced hybrid with full titanium cooling. The most versatile Tranquility for all sleeping positions and body types.
View Medium Euro Top
Lucille Plush Euro Top — 3-4/10
Best for: Side sleepers, hot sleepers who want soft
Plush hybrid with active cooling. Deep titanium foam contouring without overheating. The cool plush option.
View Plush Euro TopMedium titanium innerspring comfort.
The Tranquility Medium delivers titanium memory foam comfort on a 16-inch innerspring platform at $1,799 Queen.
Combination Sleepers
The euro top provides enough cushioning for side sleeping while the firm innerspring base supports back and stomach positions. The most versatile Tranquility.
Couples
Medium is the universal compromise. The euro top adds comfort for the partner who wants cushioning, while the innerspring base satisfies the partner who needs support.
Hot Sleepers
Titanium foam conducts heat away from the body. The 16-inch innerspring system provides natural airflow through the coil core. Cooler than all-foam mattresses at this price.
Innerspring Feel Seekers
If you prefer the responsive bounce of innersprings over the slow sink of all-foam, the Tranquility Medium delivers that classic feel with modern titanium foam comfort.
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 Lucille 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 Tranquility comfort levels side by side
- Expert sleep consultants who know cooling technology
- Price match guarantee on every Diamond Mattress model
- Free White Glove delivery, setup, and old mattress removal
- Same-day delivery available throughout Los Angeles
Shop all three Tranquility comfort levels.
Every Tranquility shares the same breathable knit cover, titanium cooling, and innerspring coil system. View all Diamond mattresses.
Tranquility Firm 16"
Firm tight-top with titanium foam for back sleepers. titanium + titanium foam + innerspring coils.
Currently ViewingTranquility Medium 16"
Medium euro-top with titanium foam for all positions. The most versatile Tranquility.
View DetailsTranquility Plush 16"
Plush euro-top with titanium foam for side sleepers. Deep titanium foam contouring without overheating.
View DetailsTranquility vs. Clarity Hybrid.
Diamond offers two natural latex collections. The Lucille is the premium flagship. The Diana offers natural latex at a slightly lower price point.
| Tranquility Firm 15" | Tranquility Medium 15" | Clarity Medium Hybrid 14" | |
|---|---|---|---|
| Height | 16" | 16" | 16" |
| Firmness | Firm (7-8/10) | Medium (5/10) | Firm (7-8/10) |
| Technology | titanium + Titanium | titanium + Titanium | Natural Talalay Latex |
| Cover | breathable knit Ultra Cool | breathable knit Ultra Cool | Organic Cotton |
| Warranty | 20 Years | 20 Years | 20 Years |
| Best For | Back sleepers, natural firm | All positions | Budget natural firm |
| Price (Queen) | $3,899 | $3,899 | $3,549 |
What sleepers are saying.
4.9 out of 5 · 30 verified reviews
I'm plus size and feel fully supported. No sinking issues.
I sleep on my side and this cushions shoulders really well.
I was waking up stiff before. Not anymore. Great pressure relief.
I like mattresses that aren�t too soft or too firm and this one is the perfect middle. My partner says the same.
My husband moves a LOT in his sleep and I hardly notice it now. That alone makes this worth buying.
or $58/mo with 0% APR financing for 24 months