Thassos White Marble 4 3/4x12 honed baseboard molding showing smooth, polished surface and detailed edge finish.

Thassos White Marble 4 3/4x12 honed baseboard molding showcasing smooth, polished marble surface and clean edges.

Thassos White Marble 4 3/4x12 Honed Baseboard Molding

TWM43/4X12HB0090

SAMPLES SHIP FREE WITHIN 1–3 BUSINESS DAYS

$21.99 / 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 Baseboard Molding

Material Education

Thassos White is a pure, crystalline marble quarried exclusively from the Greek island of Thassos in the Aegean Sea. Renowned for its brilliant, snow-white background and virtually zero veining, it is considered one of the whitest naturally occurring marbles in the world. Its dense crystalline structure produces a luminous, almost glowing quality that no engineered stone can replicate.

As a genuine natural stone, subtle tonal shifts and faint mineral inclusions may appear from piece to piece — these are hallmarks of authentic Thassos marble, not imperfections, and contribute to the organic beauty of the material.

About this molding: This baseboard molding measures 4¾ × 12 inches and is sold per linear foot, offering a refined architectural transition between flooring and wall surfaces. The honed finish delivers a smooth, matte surface that keeps the focus on Thassos's iconic pure white tone without the reflectivity of a polished surface.

Design & Inspiration

Thassos White's pristine, cool-white palette pairs beautifully with polished chrome and brushed nickel fixtures, white oak cabinetry, and deep contrasting stones like Nero Marquina or Calacatta Gold. It suits a wide range of aesthetics including minimalist modern, luxury spa, Hamptons coastal, and classic European bath design.

A baseboard molding in this format creates a clean, architectural termination line at floor level that ties together stone flooring and wall tile installations with professional polish. The 4¾-inch height provides substantial visual weight while the honed finish keeps the overall look understated and timeless.

Popular design combinations: pair with large-format Thassos White honed floor tiles and polished Calacatta wall tile for a luminous, high-contrast luxury bathroom. 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

Thassos White marble originates from the Greek island of Thassos and is celebrated worldwide for its exceptionally pure, bright white color and dense crystalline structure — qualities that distinguish it from all other white marbles. This baseboard molding brings that iconic stone to one of the most detail-oriented elements of a fine tile installation.

Finished with a honed surface, this molding offers a smooth, low-sheen appearance that complements both polished and honed field tile installations without competing for attention. At 4¾ inches tall and 12 inches long, each piece installs cleanly as a continuous baseboard to deliver a crisp, built-in look along any wall or floor transition.

Ideal for luxury bathrooms, spa showers, powder rooms, and foyer floors, this molding is the perfect finishing touch wherever Thassos White tile is used throughout a space. Because this is a specialty trim item, we recommend ordering a sample to confirm color match with your field tile, and purchasing 10–15% overage to account for cuts and future repairs.

Material	Natural Marble
Color	Bright White
Type	Baseboard Molding
Piece Size	4¾ × 12 inches
Finish	Honed
Sold By	Per Linear Foot
Application	Wall & Floor Trim (Indoor)
Shade Variation	V1 — Uniform
Design	Contemporary / Traditional / Transitional
Country of Origin	Europe

✓ Bathroom Baseboard TrimSeamless stone finish at floor-wall junction

✓ Shower Enclosure DetailWater-resistant stone border at shower base

✓ Foyer & Hallway AccentElegant architectural finish for stone floors

✓ Spa & Wet Room DesignCohesive all-stone look in luxury wet spaces

— Outdoor UseNot recommended — honed marble susceptible to freeze-thaw damage

— High-Traffic Floor SurfaceTrim piece only — not intended as a floor tile

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 is a dense marble but its pure white surface shows staining readily, making sealing essential. Apply a penetrating stone sealer before grouting and re-seal every 6–12 months in wet areas such as showers and bathroom floors. In dry applications such as foyer baseboards, annual sealing is sufficient.

Cleaning: Clean with a pH-neutral stone cleaner and a soft cloth or mop — never use acidic cleaners (vinegar, citrus), bleach, or abrasive scrubbers, as these will etch and dull the honed surface. The matte honed finish is slightly more forgiving than polished marble but still requires prompt cleanup of spills, especially from acidic substances like wine, juice, or soap scum.

Installation: Use white polymer-modified thinset mortar to avoid any gray bleed-through on this bright white stone. Allow thinset to cure fully before grouting. For tight baseboard joints against flooring, use a non-sanded or fine-sanded grout in a matching white tone. Back-butter each piece thoroughly for full adhesive contact, and use a level to ensure consistent alignment along the wall base.

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.