Polar Thassos White 12x12 Polished Marble Tile - TILE & MOSAIC DEPOT
Polar Thassos White 12x12 Polished Marble Tile - TILE & MOSAIC DEPOT

Polar Thassos White 12x12 Polished Marble Tile

SAMPLES SHIP FREE IN 1 TO 3 BUSINESS DAYS!
$12.75 / sq. ft.
$12.75 / Piece
QUANTITY
SOLD BY: sq ft Minimum: 50 sq. ft.
Minimum Purchase: 50 sq.ft.
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 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.
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 northern Aegean, celebrated worldwide for yielding the purest, whitest crystalline marble on earth. Its densely packed sugar-crystal structure gives the stone an extraordinary brightness and subtle translucency unmatched by any other white marble.

Finished to a high polish, this 12×12 tile develops a mirror-like reflective surface that amplifies the stone's natural whiteness and brings a luminous, spa-like quality to any room. The large format minimizes grout lines, allowing the crystalline beauty of the marble to take center stage across floors, walls, and feature areas.

Thassos White tiles are ideally suited for master bathroom floors, shower surrounds, and elegant foyer installations where a pristine, high-end aesthetic is desired. Because this is a premium clearance-eligible natural stone, ordering a sample to verify the whiteness and finish in your specific lighting conditions is strongly recommended before committing to a full order.

Material Natural Marble
Color Pure White with Subtle Crystal Variation
Type Field Tile
Tile Size 12 × 12 inches
Finish Polished
Sold By Per Sq. Ft.
Application Floor & Wall (Indoor)
Shade Variation V2 — Slight Variation
Design Contemporary / Transitional / Traditional
Country of Origin Europe
✓ Bathroom FloorBright, reflective surface elevates luxury baths
✓ Shower Walls & SurroundsPolished finish is easy to wipe clean
✓ Foyer & EntrywayGrand white field creates dramatic first impressions
✓ Feature Wall or Fireplace SurroundLuminous white anchors any focal point
— Outdoor UsePolished marble is not recommended for outdoor or frost-exposed areas
— Unsealed Wet AreasMust be sealed before use; white marble stains easily without proper sealer protection

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 is a dense but highly absorbent white marble that must be sealed before installation and resealed every 6–12 months in wet areas such as showers and bathroom floors. Use a penetrating impregnating sealer specifically formulated for white or light-colored natural stone to prevent staining from hard water, soap, and oils.

Cleaning: Clean with a pH-neutral stone cleaner and a soft microfiber cloth or mop — never use acidic cleaners (vinegar, citrus, or grout haze removers) or alkaline products, as these will etch the polished surface and cause permanent dull spots. Wipe up spills immediately, especially from coffee, wine, juice, and colored soaps, to prevent staining on this bright white stone.

Installation: Always use white polymer-modified thinset mortar — gray thinset will show through the translucent Thassos marble and discolor the tile from below. Back-butter each tile fully to ensure 95–100% coverage and eliminate hollow spots. Use a non-sanded or fine-grain grout in a white or light tone, and ensure substrate is perfectly flat to prevent lippage on this large format tile.

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.

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