Choosing Carrara White Marble establishes a material direction, but it does not settle the bathtub design. Cirenne, Rivara and Lysenne use that same named stone in three different forms: a round vessel with a side ledge, a fluted rounded rectangle and a restrained elongated oval. Their useful differences are more specific than “round versus rectangular.” They concern the outline you reserve on the plan, the exterior detail you want to see and the information still needed before approving the project.
This comparison uses the current product references, not a claim that one model is universally more comfortable or easier to install. All three are made to order. Reference dimensions support an initial shortlist; the approved project drawing resolves final fabrication details.
The three references, side by side
On smaller screens, swipe horizontally within the table to view all four columns.
| Model | Defining exterior | Current reference dimensions | Detail not to overlook |
|---|---|---|---|
| Cirenne BT-139A | Round body with an integrated external side ledge | Approximately 1600 mm circular-body diameter and 650 mm overall height | The diameter excludes the side-ledge projection; it is not the complete footprint |
| Rivara BT-137A | Fluted rounded-rectangle body | Approximately 1700 × 750 × 470 mm overall | Approximately 57 mm wall/rim reference; final interior dimensions require drawing confirmation |
| Lysenne BT-130A | Minimal elongated oval with a continuous thick rim | 1727 × 914 × 559 mm overall, length × width × maximum height | Overall dimensions do not establish basin depth or usable interior space |
These figures are reference values, not installation instructions. Do not compare Cirenne’s body diameter with the other models’ overall dimensions as though all three describe a complete installation envelope.
Cirenne: start with the ledge, not only the circle
Cirenne combines a cylindrical bathing vessel with a projecting side feature. That projection gives a round form a particular orientation: the ledge has to go somewhere in the room, even though the basin itself reads as circular.
For an initial layout, draw the circular body and identify the intended side for the ledge. Then request confirmation of the complete outside geometry before deciding its relationship to a wall, circulation path or adjacent fixture. The published 1600 mm diameter deliberately excludes that projection. An apparently generous circular space on a plan therefore does not, by itself, establish that the full design fits.
The current reference also identifies an approximately 125 mm rim and a centered drain. Those are useful starting points for questions, not permission to set the final plumbing. Confirm the ledge geometry, drain interface and other project details on the approved drawing. Do not assume the ledge is a seat or a mounting surface for a faucet without specific confirmation.
Rivara: compare the fluting and the lower reference profile
Rivara introduces vertical fluting around an elongated rounded-rectangle exterior. If the desired distinction is surface rhythm rather than an added side projection, it belongs on the shortlist.
Its current 1700 mm reference length is close to Lysenne’s 1727 mm, but the other dimensions differ: Rivara is approximately 750 mm wide and 470 mm high, compared with Lysenne’s 914 mm width and 559 mm maximum height. That makes a length-only comparison unhelpful. Put the complete reference sizes on the same plan and elevation before deciding which proportions suit the proposed position.
The narrower and lower exterior figures do not establish a preferred bathing posture, capacity or easier entry. Those conclusions require different information. Review the final interior dimensions and plumbing configuration separately. For a custom request, state whether the fluted treatment itself is important to retain; it is one of the details the product page identifies for feasibility review.
Lysenne: a simpler exterior, not an interchangeable footprint
Lysenne keeps the exterior deliberately restrained, with a continuous thick rim and an elongated oval outline. It offers a different visual emphasis from Rivara’s repeated grooves or Cirenne’s projecting ledge: the curved body and natural marble movement remain the principal elements.
At the listed references, Lysenne is almost the same length as Rivara but substantially wider. Do not substitute one for the other on a drawing while retaining a generic bathtub symbol. Equally, the outside width does not tell you the usable bathing width: rim and wall geometry occupy part of the overall form.
Lysenne’s product documentation leaves final rim and wall thicknesses, basin depth, drain, overflow and other fabrication details to approved project documentation. If a clean oval appearance is your starting point, keep those open questions visible rather than treating the reference image as a complete specification.
Compare the stone separately from the shape
All three current product pages identify Carrara White Marble and describe natural variation in background tone and veining. Sharing a material name does not promise identical markings across three pieces—or an exact repeat of an illustrated bathtub.
Use the images to discuss the design direction, then identify which material references can be reviewed for the proposed order. Our natural stone appearance guide explains the distinction between samples, material photographs and finished-piece evidence. Styled visualizations illustrate a design; they do not prove a completed customer installation or the appearance of the stone allocated to an order.
Turn the shortlist into a specific request
Browse the marble bathtub collection with one primary model and, if useful, one alternative in mind. State what must be retained: Cirenne’s ledge, Rivara’s fluting or Lysenne’s quiet oval outline. Add target dimensions, preferred stone and finish, project location, and relevant drawings or reference images.
The custom natural stone bathtub process separates a listed reference configuration from changes requiring a custom quotation and feasibility review. Changing dimensions or details is not automatically included in the reference price. Before committing, coordinate structure, access, lifting and plumbing with qualified project professionals. Freight preparation is not a promise of indoor placement or installation; establish the actual service scope in the written quotation.
