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 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

PWMPL2X22PH181

SAMPLES SHIP FREE WITHIN 1–3 BUSINESS DAYS
$8.95 / Piece
QUANTITY
TOTAL PRICE:
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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.
Ships in 2–3 Days
Free Sample Shipping
Nationwide Delivery
Premium Natural Stone
Secure Packaging

The Polar Thassos White Pencil Liner is cut from premium dolomitic marble sourced from the legendary island quarries of Thassos, Greece — the gold standard for pure white stone. Its dense, crystalline structure produces an exceptionally bright white with virtually no veining, making it one of the cleanest, most luminous marble profiles available.

Measuring 1/2 inch wide by 12 inches long and finished with a smooth honed surface, this pencil liner delivers a sleek, low-sheen border detail that frames tile installations with understated elegance. The honed finish is forgiving in wet areas and resists the visible etching that can occur on polished surfaces, making it a practical as well as beautiful choice.

Ideal for bathroom walls, shower surrounds, kitchen backsplash borders, and niche accents, this liner is sold per linear foot for flexible quantity ordering. Because Thassos is among the whitest natural stones available, we strongly recommend ordering a sample before purchasing to confirm it matches your field tile and grout selection.

Material Natural Marble (Dolomitic)
Color Pure Bright White
Type Marble Molding — Pencil Liner
Piece Size 1/2 × 12 inches
Finish Honed
Sold By Per Linear Foot
Application Wall & Backsplash (Indoor)
Shade Variation V1 — Uniform
Design Contemporary / Transitional / Spa
Country of Origin Europe
✓ Shower Wall BorderCrisp liner frames tiles with spa elegance
✓ Kitchen Backsplash TrimClean edge detail for polished backsplash designs
✓ Niche & Shelf AccentDefines niches with a refined linear finish
✓ Wainscot Cap DetailNeat top edge for marble wainscot installations
— Floor Use Not RecommendedSlender molding profile not suited for floor traffic
— Outdoor Use Not RecommendedThassos marble is sensitive to freeze-thaw cycles

Free Shipping: As a molding, this product qualifies for free curbside shipping on orders over $1,999 within the continental U.S. Orders below that threshold ship at standard rates calculated at checkout.

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, while dense, is a light-colored porous stone that should be sealed before installation and resealed every 6–12 months in wet areas such as showers. Use a penetrating stone sealer specifically formulated for white or light marble to prevent staining without altering the honed surface appearance.

Cleaning: Clean with a pH-neutral stone soap and a soft cloth or sponge — never use vinegar, citrus-based cleaners, bleach, or abrasive pads, as acidic or harsh products will etch and dull the honed surface. Wipe dry after use in wet areas to prevent mineral deposits on this bright white stone, where water spots are highly visible.

Installation: Install using white polymer-modified thinset mortar to avoid any gray bleed-through behind the translucent white stone. Use non-sanded grout for tight joints and ensure the substrate is flat and fully cured. Back-butter each liner piece for full adhesion, and align carefully — at 1/2 inch wide, any lippage or misalignment will be visually prominent.

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.




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.

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