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

Polar Thassos White 18x36 Polished Marble Tile

Name: Polar Thassos White 18x36 Polished Marble Tile
Brand: TILE AND MOSAIC DEPOT
SKU: PWM18X36P0181
Price: 15.95 USD
Availability: InStock

SAMPLES SHIP FREE IN 1 TO 3 BUSINESS DAYS!

$15.95 / sq. ft.

$71.78 / Piece

QUANTITY

SOLD BY: sq ft Minimum: 50 sq. ft.

Sq. Ft.

pieces

Minimum Purchase: 50 sq.ft.

Add 10% more to cover cuts and waste (recommended)

TOTAL PRICE:

—

Order your full amount plus ~10% overage at once, as reorders may vary in tone and veining. Verified shipping damage is covered with clear photos — but small tile quantities (1–5 pieces) are refunded rather than reshipped, so ordering extra protects you.

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.

About Polar Thassos White Polished Marble Tile

Material Education

Thassos White is a pure white crystalline marble quarried exclusively from the island of Thassos in the Aegean Sea, celebrated as one of the whitest natural stones in the world. Its dense, sugar-crystal structure produces an almost luminous brightness with minimal veining, setting it apart from all other white marbles. A high-polish finish amplifies its natural sheen, giving surfaces a mirror-like reflectivity that catches and amplifies light beautifully.

As a product of nature, individual tiles may exhibit subtle variation in crystal density, very faint clouding, or barely perceptible tonal shifts — these are hallmarks of genuine Thassos marble and contribute to its unique, living character.

About this tile: This large-format 18×36 polished field tile delivers dramatic, uninterrupted expanses of brilliant white stone, ideal for floors and walls where a seamless, high-impact look is the goal. The generous slab-like proportions minimize grout lines, creating a near-continuous stone surface with a luxurious, gallery-quality appearance.

Design & Inspiration

Thassos White's pure, snow-bright palette pairs effortlessly with polished chrome and brushed nickel fixtures, warm white oak cabinetry, soft greige wall paint, and bold contrasting stones like Nero Marquina black marble or Calacatta Gold. It suits a wide spectrum of design aesthetics, from minimalist contemporary and Scandinavian spa to classic European luxury and transitional interiors.

The large 18×36 format is especially powerful in master bathrooms and open living spaces, where the oversized tiles create a sense of expansive, unbroken space and visual calm. Laid in a staggered brick pattern or straight set, the polished surface reflects both natural and artificial light, making even modest-sized rooms feel dramatically larger and more open.

Popular design combinations: pair Polar Thassos White 18×36 floor tiles with a Thassos 1×2 herringbone mosaic accent wall and matte black fixtures for a striking monochromatic spa bathroom. Explore the full Thassos White collection for coordinating sizes, and browse more marble tile for complementary looks.

Ships in 2–3 Days

Free Sample Shipping

Nationwide Delivery

Premium Natural Stone

Secure Packaging

Polar Thassos White is sourced from the legendary marble quarries of Thassos Island in the Aegean, producing one of the purest, most brilliantly white natural stones available anywhere in the world. Its dense crystalline structure and near-total absence of veining give it an extraordinary, luminous whiteness that no engineered stone or porcelain can authentically replicate.

Each tile is cut to an expansive 18×36 inch format and brought to a high-gloss polish that enhances the stone's natural reflectivity and crystal sparkle. The large format dramatically reduces visible grout joints, creating an almost seamless stone surface that adds a sense of luxury and spatial depth to any floor or wall installation.

Ideal for master bathroom floors, shower surrounds, spa feature walls, and upscale residential or hospitality lobbies, this tile performs beautifully in any interior application where maximum visual impact is desired. Because clearance inventory is limited at this size, ordering a sample is strongly recommended to confirm color match, and purchasing 10–15% overage is advised to account for cuts and future repairs.

Material	Natural Marble
Color	Bright White with Subtle Crystal Variation
Type	Field Tile
Tile Size	18 × 36 inches
Finish	Polished
Sold By	Per Sq. Ft.
Application	Floor & Wall (Indoor)
Shade Variation	V2 — Slight Variation
Design	Contemporary / Transitional / Luxury
Country of Origin	Europe

✓ Master Bathroom FloorExpansive format creates seamless, spa-like luxury

✓ Shower Surround & WallsPolished surface brightens and visually enlarges showers

✓ Feature Wall / Accent WallLarge slabs deliver bold, gallery-quality stone impact

✓ Foyer & Entryway FloorLuminous white makes a striking first impression

— Outdoor UsePolished marble is not recommended for exterior applications

— Commercial Wet Floors (Unsealed)Requires sealing and non-slip mat in high-traffic wet areas

Free Shipping: This product ships at standard freight rates calculated at checkout based on your location and order size.

Processing & Delivery: Orders are processed within 2–3 business days. Large orders ship via LTL freight — curbside delivery only. An adult must be present to sign for delivery. Estimated transit: 2–10 business days after shipment.

30-Day Returns: Uninstalled tile may be returned within 30 days of delivery. Inspect all tile carefully before installation — installed tile cannot be returned or exchanged. Samples are final sale.

Exclusions: Free shipping does not apply to Hawaii, Alaska, U.S. territories, or international addresses. Additional charges may apply for remote delivery areas.

Sealing: Thassos White marble must be sealed before grouting and immediately after installation with a premium penetrating stone sealer. Due to its exceptionally pure, low-iron composition, it is highly absorbent — seal every 6–12 months in wet areas such as showers and bathroom floors to prevent staining and moisture infiltration. A topical enhancer sealer is not recommended, as it may alter the natural bright white appearance.

Cleaning: Clean with a pH-neutral stone cleaner or mild dish soap diluted in warm water; rinse thoroughly and dry with a soft cloth to prevent water spots. The high-polish surface is especially susceptible to etching from acidic substances — never use vinegar, citrus-based cleaners, grout haze removers, or any product containing acid, bleach, or ammonia. Wipe up spills immediately, particularly from coffee, wine, citrus juice, and toiletry products.

Installation: Always use bright white polymer-modified thinset mortar — never gray thinset, which can telegraph color through the stone and alter its brilliant white appearance. Back-butter each tile fully in addition to applying thinset to the substrate to achieve 95%+ coverage and prevent lippage on this large format. Use non-sanded or fine-sanded grout with joints no wider than 1/16–1/8 inch for a near-seamless look. Ensure the substrate is flat to within 1/8 inch over 10 feet to prevent cracking. Allow tiles to acclimate to room temperature before installation.

Important: Inspect all tile before installation. Variations in color, veining, and texture between pieces are natural characteristics of genuine stone — not defects. Order 10% overage for cuts, waste, and future repairs. Tile & Mosaic Depot specialists are available M–F 8:30AM–5PM PST at 855-797-8453.

Why Tile & Mosaic Depot

The natural stone specialists

Quarry-Direct Pricing

We buy direct from the source and skip the middleman, so you get showroom-quality stone for less.

Huge Stone Selection

Marble, travertine, limestone, porcelain and more — thousands of tiles, mosaics, and slabs in one place.

Expert Stone Support

Talk to real natural-stone specialists, M–F 8:30AM–5PM PST, at 855-797-8453 or via live chat.

Easy 30-Day Returns

Uninstalled tile can be returned within 30 days. Order with full confidence.

Every order is packed by hand and shipped with care from our U.S. fulfillment centers. Here's exactly what to expect from checkout to delivery.

Processing & Transit
In-stock orders are processed within 2–3 business days. Most tile and stone orders ship via scheduled LTL freight and typically arrive 2–10 business days after dispatch, depending on your destination. You'll receive tracking and carrier details by email as soon as your order leaves our warehouse.

Freight Delivery

Curbside delivery. The carrier unloads at the curb or driveway nearest your address; delivery does not include moving materials indoors or into a garage.
Scheduled appointment. The freight company contacts you directly to arrange a delivery window.
Signature required. An adult (18+) must be present to inspect and sign for the shipment.
Clear access. Please ensure the delivery site is reachable by a freight truck and free of obstructions.

Free Shipping
Free curbside shipping is available on qualifying mosaic and molding orders over $1,999 within the continental U.S. Tile, porcelain, and other product types ship at standard freight rates calculated at checkout. Free shipping does not apply to Hawaii, Alaska, U.S. territories, or international addresses.

Inspection & 30-Day Returns
Please inspect every shipment before signing the carrier's delivery receipt, and note any visible damage, shortage, or tampering directly on the receipt. Report concerns within 3 calendar days at sales@tileandmosaicdepot.com. Uninstalled tile may be returned within 30 days of delivery; installed material and samples are final sale.

Need a hand? Our team is glad to help — call (855) 797-8453 or email sales@tileandmosaicdepot.com, Monday–Friday, 8:30 AM–5 PM PST.

Product & Installation Guidance

Natural stone is a product of the earth — every piece is one of a kind. A little planning ensures your finished installation looks its best and lasts for decades.

Natural Variation
Color, veining, texture, shade, movement, finish, and sizing vary from piece to piece. Product photos and samples are a general reference and may not match the exact material you receive. These variations are inherent characteristics of natural stone — they are part of its beauty, not defects.

Before You Install

Order roughly 10% extra to allow for cuts, waste, and future repairs.
Blend tiles from multiple boxes as you work to achieve the most natural, balanced appearance.
Dry-lay and inspect the full layout before setting a single tile.
Installation constitutes full acceptance of the product, so review everything carefully first.

Sealing & Care
Natural stone should be sealed with a quality penetrating sealer before and after installation, and re-sealed periodically in wet or high-traffic areas. Clean only with a pH-neutral stone cleaner; avoid acidic products, bleach, vinegar, and ammonia, which can permanently etch the surface. Outdoor installations may weather or change tone over time with exposure.

Responsibility
Tile & Mosaic Depot is not responsible for improper installation, labor costs, substrate conditions, product misuse, or damage from improper handling, sealing, maintenance, or harsh chemicals. No claims, returns, or replacements can be accepted on installed material.

California Proposition 65: Some natural stone products contain substances known to the State of California to cause cancer or reproductive harm. For more information, visit www.P65Warnings.ca.gov.

Order a Sample First

Seeing real stone in your own space — under your own light, beside your own finishes — is the best way to buy with confidence. We make it easy and affordable.

How It Works
Samples are just $7.99 each with free shipping, and they ship in 1–3 business days. Sizes vary by material and availability, typically ranging from 3"×3" up to 8"×8". Exact dimensions aren't guaranteed, but every sample is cut from the same material you'll receive in a full order.

What a Sample Shows
Samples help you evaluate the general color, texture, finish, and overall character of a product before committing to a full order. Because natural stone varies from piece to piece, your sample is representative — it may not capture the complete range of variation across an entire lot. For current lot photos, just ask our team.

Good to Know

Samples are final sale — non-returnable and non-refundable.
Ordering a sample before a full purchase is always recommended, especially for natural stone.
Planning a larger or custom quantity? Contact us for a tailored quote.

Questions before you order? Our stone specialists are happy to help you choose — call (855) 797-8453 or email sales@tileandmosaicdepot.com, Monday–Friday, 8:30 AM–5 PM PST.