Thassos White Marble 3/4x12 honed pencil liner molding for elegant bathroom or kitchen tile trim, from Tile and Mosaic Depot.

Thassos White Marble 3/4x12 honed pencil liner molding, used as trim or border for tiles and surfaces.

Thassos White Marble 3/4x12 Honed Pencil Liner

TWM3/4X12HPL0047

SAMPLES SHIP FREE WITHIN 1–3 BUSINESS DAYS

$9.99 / Piece

QUANTITY

Quantity

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

TOTAL PRICE:

—

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.

Thassos White Marble

Thassos White marble — the purest, most brilliantly white marble in the world. Quarried exclusively on the Greek island of Thassos with crystalline white and virtually no veining. Tile and mosaic formats in polished and honed finishes for luxury bathrooms, spa spaces, and pool interiors. Free sample shipping on all products.

About Thassos White Marble Honed Pencil Liner

Material Education

Thassos is a pure white crystalline marble quarried from the Greek island of Thassos in the Aegean Sea, renowned for producing some of the whitest, most luminous stone in the world. Its exceptional brightness comes from a dense, sugar-crystal structure with virtually no veining or impurities, giving it an almost glowing, snow-white appearance. A honed finish softens the natural brilliance to a silky matte sheen, preserving the stone's clean, crisp whiteness.

As a product of nature, subtle variations in crystal density and very faint tonal shifts may appear from piece to piece — these nuances are the hallmark of genuine Thassos marble and add to its authentic character.

About this molding: This pencil liner measures 3/4 inch wide by 12 inches long, offering a slender, elongated profile ideal for framing tilework, defining borders, and adding refined linear accents. Each piece is sold individually by the linear foot, making it easy to calculate quantities for both small accent details and larger trim runs.

Design & Inspiration

The pure, bright white of Thassos pairs beautifully with polished chrome or brushed nickel fixtures, white oak cabinetry, and cool-toned materials like glass or grey limestone, fitting seamlessly into modern, spa, and Hamptons-style interiors. Its neutral perfection also complements bold contrasts — think Nero Marquina black marble or deep navy grout — for a classic, high-impact look.

A pencil liner is the ideal format for defining transitions between tile fields, framing shower niches, outlining mirrors, or creating visual breaks between wall tile and accent bands. The honed finish keeps the trim understated and elegant, letting the surrounding tilework take center stage while still delivering a polished, intentional finish.

Popular design combinations: pair this Thassos honed pencil liner with a Thassos white hexagon mosaic floor and large-format Carrara honed wall tiles for a timeless, all-white spa shower. Explore the full Thassos White collection for coordinating sizes, and browse more marble moldings & trims for complementary looks.

Ships in 2–3 Days

Free Sample Shipping

Nationwide Delivery

Premium Natural Stone

Secure Packaging

The Thassos White Marble Honed Pencil Liner is crafted from one of the world's most prized pure white marbles, quarried from the Greek island of Thassos in the Aegean. Its dense crystalline structure produces an exceptionally bright, vein-free white that few other stones can match.

Finished with a honed surface, this 3/4 × 12-inch pencil liner has a smooth, matte feel that diffuses light softly rather than reflecting it, lending a refined and understated elegance. Its slim profile makes installation straightforward, fitting neatly into standard mortar joints as a border or transition strip.

This liner is ideally suited for bathroom and shower surrounds, backsplash borders, niche framing, and mirror outlines — anywhere a clean, crisp white accent line is needed. Because Thassos is a pure white, dense stone, we strongly recommend ordering a sample first to confirm the honed finish and shade match your project materials before purchasing in quantity.

Material	Natural Marble
Color	Pure Bright White
Type	Marble Molding / Pencil Liner
Piece Size	3/4 × 12 inches
Finish	Honed
Sold By	Per Piece / Per Linear Foot
Application	Wall & Backsplash (Indoor), Shower Surround
Shade Variation	V1 — Uniform
Design	Contemporary, Transitional, Traditional
Country of Origin	Europe

✓ Shower Border & TrimClean white accent frames any tile field

✓ Bathroom Backsplash BorderElegant linear detail above vanity tile

✓ Niche & Mirror FramingSlim profile perfect for detail work

✓ Kitchen Backsplash AccentBright white breaks up tile patterns beautifully

— Floor Use Not RecommendedNarrow profile not suited for floor applications

— Requires Sealing in Wet AreasSeal before and after grout in showers; reseal annually

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 still a natural stone that benefits from regular sealing — particularly in wet environments like showers and steam rooms. Apply a penetrating stone sealer before grouting and again after installation. In shower applications, reseal every 12 months to protect against moisture infiltration and staining. The honed finish is slightly more absorbent than a polished surface, making consistent sealing especially important.

Cleaning: Clean with a pH-neutral stone cleaner or warm water only — never use acidic cleaners (vinegar, citrus-based products) or abrasive scrubs, as these will etch the honed surface and dull its appearance. Wipe spills promptly, especially from acidic substances like juice, coffee, or soap scum. Avoid ammonia-based or bleach cleaners, which can degrade the sealer and discolor the stone over time.

Installation: Always use white thinset mortar with Thassos marble to prevent any gray or dark adhesive from telegraphing through the bright white stone. Back-butter each piece thoroughly for full coverage. For grout joints, non-sanded grout is recommended given the slim profile of the liner. Ensure the substrate is flat and stable before installation, and use a level to maintain consistent alignment across the trim run.

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.

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.