Polar Thassos White 18x36 Honed Marble Tile - TILE & MOSAIC DEPOT
Polar Thassos White 18x36 Honed Marble Tile - TILE & MOSAIC DEPOT
Polar Thassos White 18x36 Honed Marble Tile - TILE & MOSAIC DEPOT
Polar Thassos White 18x36 Honed Marble Tile - TILE & MOSAIC DEPOT

Polar Thassos White 18x36 Polished Marble Tile

PWM18X36P0181

FREE SHIPPING • 2–3 DAY EXPRESS AVAILABLE
$15.95 / sq. ft.
$71.78 / Piece
QUANTITY
SOLD BY: sq ft Minimum: 50 sq. ft.
Minimum order: 50 sq. ft.
TOTAL PRICE:
—
Samples ship free · Fast nationwide shipping · 30-day returns
Order your full amount plus 10% at once — reorders may vary in tone and veining. Shipping damage is covered with photos; small shortages (1–5 pieces) are refunded, NOT reshipped, so the extra 10% protects you.
Polar Thassos White Marble 4x12 polished tile showing pure crystalline white with virtually no veining — Tile & Mosaic Depot

Polar Thassos White Marble

Polar Thassos White Marble — the purest, most brilliant white marble available. Crystalline white with virtually no veining in tile and mosaic formats. The definitive choice for luxury bathrooms, spa spaces, and high-end kitchen applications. Free sample shipping.
  • MaterialNatural marble
  • FinishPolished
  • Size18 × 36 in
  • Thickness3/8" or 1/2" (10–12 mm), varies by shipment
  • VariationV2, slight
  • UseFloor and wall, indoor

Polar Thassos White Marble18 × 36 Polished

A bright white marble in a large 18 × 36 format, polished to a reflective finish and laid with few grout lines.

Polar Thassos White is a clean, bright white marble with a fine crystalline grain and very little veining. The polished face reflects light, so a room reads brighter and quieter. Expect faint tonal shifts and slight crystal variation from tile to tile.

At 18 × 36, each piece covers 4.5 sq ft, so the layout has fewer joints than a smaller tile. Set straight or staggered, it gives a calm, continuous surface. It is listed for indoor floors and walls. Polished marble can etch, so low-traffic spaces suit it best.

Samples are $7.99 each, up to 10 per order. Samples ship free, within 1-3 business days. Your sample comes from the lot we have in stock now, so it shows that lot's actual color range and finish. Future lots may look lighter, darker, or more veined, so order your full quantity plus 10% at once to keep the whole job from one lot.

Order a sample, $7.99, ships free Ask a specialist

Where It Works

  • Bathroom wallsLarge pieces keep joints to a minimum on a bright, reflective wall.
  • Feature wallAn 18 × 36 face gives a living room or entry wall a clean, uninterrupted surface.
  • BacksplashA polished white field behind a kitchen or vanity counter, with regular cleaning in mind.
  • Low-traffic floorSuited to a powder room or entry where the polished face sees light wear.
  • Outdoor and pool areasPolished marble is not recommended for exteriors or pools.
  • Shower floors and commercial wet floorsNot recommended without confirmed suitability for wet, high-traffic use.

Specifications

Material
Natural marble
Color
Bright white with subtle crystal variation
Finish
Polished
Tile Size
18 × 36 in
Thickness
3/8" or 1/2" (10–12 mm), varies by shipment
Coverage
4.5 sq ft per tile
Shade Variation
V2, slight
Application
Floor and wall, indoor
Origin
Europe
Sold By
Per sq ft

Care & Cleaning

Seal It

Seal with a penetrating stone sealer before grouting and again after installation. In wet areas, reseal every 6–12 months. Skip topical enhancer sealers, which can change the white tone.

Clean It

Use a pH-neutral stone cleaner or diluted mild dish soap in warm water. Rinse and dry with a soft cloth. Avoid vinegar, citrus, bleach, ammonia, and acidic grout haze removers.

Expect This

Polished marble can etch, so wipe up spills quickly. Expect faint clouding and slight crystal variation between tiles.

Tile & Mosaic Depot supplies material only. Installation method, setting materials, and substrate are your installer's responsibility. Inspect every piece before setting; installation is acceptance, and installed material cannot be returned or claimed.

Questions

Will my order look like my sample?

Your sample comes from the lot we have in stock now, so it shows that lot's actual color range and finish. Future lots may look lighter, darker, or more veined, so order your full quantity plus 10% at once to keep the whole job from one lot.

Can I use this tile on a floor?

You can use it on indoor floors and walls, where it is listed for use. Polished marble can etch, so low-traffic areas suit it best. Outdoor use and wet-area floors are not recommended.

How much should I order?

Add 10% to your measured square footage to cover cuts, and order it all at once. Each tile covers 4.5 sq ft, and the tile is sold per sq ft.

Does it need sealing?

Sealing protects the stone, and we recommend it. Use a penetrating stone sealer before grouting and after installation, and reseal every 6–12 months in wet areas.

How do I order a sample?

Add up to 10 samples to your order at $7.99 each. Samples ship free and go out within 1-3 business days.




Why Order a Sample
A screen can't show you how Calacatta veining reads under your kitchen lights or how a porcelain finish sits next to your cabinet color. A sample can. It's the single best way to buy stone or porcelain tile with confidence — and the cheapest mistake you'll ever avoid.

How It Works
Samples are $7.99 each. Samples ship free and leave our warehouse within 1–3 business days. Sizes vary by material and availability — typically 3"×3" up to 8"×8" — and every sample is cut from the same material stocked for full orders.

What a Sample Shows
Color, texture, finish, and overall character. Because natural stone varies piece to piece, one sample represents the material but can't show the full range of a lot. Porcelain samples are highly representative of the production run. Want to see the current lot before you commit? Ask us — we'll send photos.

Good to Know

  • Samples are final sale — non-returnable and non-refundable.
  • We recommend sampling before every full order, especially for natural stone.
  • Larger or custom quantity? Contact us for a tailored quote.

Talk to a Specialist
Our stone and tile specialists will help you narrow it down. Call (855) 797-8453 or email sales@tileandmosaicdepot.com, Monday–Friday, 8:30 AM–5 PM PT.

How Your Order Ships
In-stock orders leave our warehouse within 2–3 business days. Stone, porcelain, and mosaic ship on a pallet via scheduled LTL freight and arrive 2–10 business days after dispatch, depending on destination. You'll get tracking and the carrier's name by email the day it ships.

Freight Delivery — What to Expect

  • The carrier calls you first. Every freight delivery is by appointment. Expect a call or text to set a window before the truck is dispatched.
  • Curbside delivery. The driver unloads to the curb or driveway. Freight does not include carrying material indoors or into a garage — plan for a helper or a hand truck.
  • Someone 18+ must sign. Inspect the pallet before signing. Note any damage, shortage, or broken shrink-wrap on the delivery receipt — this is what makes a claim valid.
  • Truck access. The address must be accessible to a full-size freight truck with enough space to unload.

Free Shipping
Free curbside freight on qualifying mosaic and molding orders over $1,999 in the continental U.S. Field tile, porcelain, and other product types ship at freight rates shown at checkout. Not available to Hawaii, Alaska, U.S. territories, or international addresses.

Damage & Shortages
Report within 3 calendar days of delivery with photos of the pallet, packaging, and affected pieces to sales@tileandmosaicdepot.com. Verified claims are covered. Shortages of 1–5 pieces are refunded rather than reshipped — which is why we recommend ordering 10% overage.

30-Day Returns
Uninstalled tile in full, unopened boxes may be returned within 30 days of delivery. Return freight is paid by the customer. Partial boxes, opened boxes, installed material, and samples are final sale.

Questions Before You Order?
Call (855) 797-8453 or email sales@tileandmosaicdepot.com, Monday–Friday 8:30 AM–5 PM PT. If you're unsure about freight access at your address, ask us before checkout — we'll flag anything that could hold up delivery.

Natural Variation
Quarried stone varies in color, veining, shade, movement, and finish from piece to piece and from lot to lot. Screen photos and samples show the range, not the exact tile you'll receive. Variation is the nature of the material and is never grounds for return. Porcelain is far more consistent, but shade and pattern can still shift between production runs — buy your full quantity in one order.

Before You Install

  • Order 10% overage. Covers cuts, breakage, and spares for future repairs. Reorders may not match in tone or lot.
  • Inspect every piece before setting. Pull from all boxes, blend, and dry-lay the full area. Installation is acceptance — no claims are honored once tile is set.
  • Hire a qualified installer. Natural stone and large-format porcelain require experience with the material. Your installer is responsible for substrate, setting materials, and method.

Sealing & Care
Natural stone should be sealed with a penetrating sealer and re-sealed periodically in wet and high-traffic areas. Clean with a pH-neutral stone cleaner only — vinegar, bleach, ammonia, and acidic cleaners etch marble, limestone, travertine, and onyx permanently. Porcelain does not require sealing. Outdoor stone weathers and shifts in tone over time; this is expected.

Responsibility
Tile & Mosaic Depot supplies material only. We are not responsible for installation, labor costs, substrate conditions, setting materials, product misuse, or damage from handling, sealing, maintenance, or chemicals. No claims, returns, or replacements are accepted on installed material.

California Proposition 65
Some natural stone and porcelain products contain substances known to the State of California to cause cancer or reproductive harm. Details at www.P65Warnings.ca.gov.

The Natural Stone & Porcelain Tile Specialists

Direct from the Producers

We buy directly from the mills and factories that cut and finish our tile, so pricing stays sharp and lots stay consistent.

Samples Ship Free

$7.99 per sample with no shipping charge, shipped within 1–3 business days. See the current material before you commit.

Ask a Specialist

Email us anytime with a question about our products at sales@tileandmosaicdepot.com. We'll get back to you during our business hours, Mon–Fri 8:30 AM–5 PM PT.

30-Day Returns

Uninstalled tile in full, unopened boxes may be returned within 30 days. No partial returns. Order with confidence.

More From This Collection

View all
Polar Thassos White 1/2x12 honed pencil liner molding from TILE AND MOSAIC DEPOT, showcasing a matte white marble trim for interior design.
Polar Thassos White 1/2x12 honed pencil liner tile trim with matte finish, used for edging and accents in tile installations.
Polar Thassos White 1/2x12 Honed Pencil Liner
$9.95 /piece
Polar Thassos White 12x24 honed marble tile from TILE AND MOSAIC DEPOT, showcasing smooth, polished white natural stone surface.
Polar Thassos White 12x24 honed marble tile, natural stone tile with smooth surface, showcasing elegant white marble for flooring or walls.
Polar Thassos White 12x24 Honed Marble Tile
$12.75 /sq. ft.$24.95
Polar Thassos White 12x12 Honed Marble Tile - TILE & MOSAIC DEPOT
Polar Thassos White 12x12 Honed Marble Tile - TILE & MOSAIC DEPOT
Polar Thassos White 12x12 Honed Marble Tile
$12.75 /sq. ft.$24.95
Polar Thassos White 6x12 Honed Marble Tile - TILE & MOSAIC DEPOT
Polar Thassos White 6x12 Honed Marble Tile - TILE & MOSAIC DEPOT
Polar Thassos White 6x12 Honed Marble Tile
$12.75 /sq. ft.$24.95
Polar Thassos White 18x36 Honed Marble Tile - TILE & MOSAIC DEPOT
Polar Thassos White 18x36 Honed Marble Tile - TILE & MOSAIC DEPOT
Polar Thassos White 18x36 Honed Marble Tile
$15.95 /sq. ft.$24.95
Polar Thassos White 18x36 Honed Marble Tile - TILE & MOSAIC DEPOT
Polar Thassos White 18x36 Honed Marble Tile - TILE & MOSAIC DEPOT
Polar Thassos White 18x36 Polished Marble Tile
$15.95 /sq. ft.$24.95
Polar Thassos White 2x2 hexagon honed mosaic tile from TILE AND MOSAIC DEPOT, showcasing matte finish and intricate hexagonal pattern.
Polar Thassos White 2x2 hexagon honed mosaic tile with matte finish, showcasing the elegant white stone pattern.
Polar Thassos White 2x2 Hexagon Honed Mosaic Tile
$14.49 /sheet$24.95
Polar Thassos White 1x4 herringbone mosaic tile from TILE AND MOSAIC DEPOT, matte finish with natural white marble appearance.
Honed Polar Thassos White 1x4 herringbone mosaic tile with marble finish, showcasing natural white and subtle gray veining.
Polar Thassos White 1x4 Herringbone Honed Mosaic Tile
$10.95 /sheet$24.95

Recently viewed

Back to Polished