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Tranquility Collection Reviews

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Tranquility Collection

The Tranquility by Diamond Mattress is a collection of four models: Cloud, Clarity, Waterfall, Balance. These are innerspring mattresses with foam comfort layers. All four models have latex in the comfort layers. Waterfall also has gel, and the other three have memory foam. Diamond Mattress claims its Tranquility models have "natural" materials. It's Eco-Flex foams use plant-based ingredients.

Mattresses in the Tranquility Collection are rated as "highly conformable." This conformability begins with the innerspring. It is made of individually wrapped pocket coils (a.k.a. Marshall coils). Their independent responses conform to body contours to lessen pressure and promote proper spinal alignment. Pocket coils also eliminate motion transfer, so when one sleeper movers, the other one is not disturbed.

The three principal materials found in the comfort layers of Tranquility mattresses are latex, memory foam, and gel. The latex is natural Talaly latex, made from the sap of the Brasilian rubber tree. Latex is reslilient, quickly recovering its original shape when weight is removed.

The memory foam contains soy-oil. Memory foam is conformable. For a brief time, it remembers the shape of the weight pressed on it.

Gel is supportive and cooling. It is infused into mattress foam for those reasons.


At 15", Cloud, a super pillow top, is the highest model. It is also the softest, with a firmness rating of 2 on a scale of 10. Its comfort layers are latex foam and memory foam. According to Diamond, it and Waterfall are the best selling models in this collection.

Clarity is the second highest Diamond Mattress Tranquility model. It is a 14" high pillowtop mattress rated as luxury-plush (3 on the scale). Its comfort layers are latex and memory foam.

The next highest model is the 13" Waterfall, a medium-plush (5) eurotop mattress. Its first comfort layer is latex, and the top layer is gel (or gel foam). Waterfall is one of the two more popular Tranquility models.

The lightest model in the Tranquility Collection is the 12" Balance. It is a tight top mattresses with a luxury-firm (8) comfort level. Its pocket coil innerspring is topped by layers of latex and memory foam.

Tranquility Collection models are compatible with adjustable foundations. Diamond Mattress sells two Leggett & Platt adjustable bases: S-Cape® Lifestyle Base and Pro-Motion™ Lifestyle Base.

Tranquility mattresses carry a Diamond Mattress 20-year warranty. They are available in stores in southern California.

  • Mattress and Bed Set Model Name

    Diamond Mattress Tranquility Collection

  • Price Category


  • Listed Manufacturer

    Diamond Mattress

  • Location

    Diamond Mattress, Attn: Customer Service, 3112 E. Las Hermanas St., Rancho Dominguez, CA 90221

  • Bed Classification


  • Level of Firmness


  • Inner Bed Composition

    Pocket coils with foam comfort layers

  • Mattress Edge Support

    Foam encasement

  • Mattress Cover Composition

    Knit fabric quilted with fire blocker fibers

  • Total Mattress Height

    12, 13, 14, and 15 inches

  • Bed Foundation

    Adjustable compatible

  • Special Features

    Plant-based foams

  • Sleep Trial

    not stated

  • Bed Warranty

    20 years

  • Manufactured In


  • Restrictions

    Keep in sanitary condition, and provide proper foundation

  • Website


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