Thassos White Marble Honed Quarter Round Trim - TILE & MOSAIC DEPOT

Thassos White Marble Honed Quarter Round Trim

Name: Thassos White Marble Honed Quarter Round Trim
Brand: TILE AND MOSAIC DEPOT
SKU: TWMP1x12HL0043
Price: 19.49 USD
Availability: InStock

SAMPLES SHIP FREE IN 1 TO 3 BUSINESS DAYS!

$19.49 / Piece

QUANTITY

Quantity

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

TOTAL PRICE:

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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.

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 Quarter Round Trim

Material Education

Thassos White is a pure, statuesque marble quarried from the Greek island of Thassos in the Aegean Sea, celebrated for its extraordinary snow-white tone and high crystalline luminosity. Unlike most white marbles, Thassos contains virtually no veining or gray cloud, delivering a consistent, radiant brightness that reflects light with a near-glowing quality. Its fine-grained crystalline structure gives it a depth and clarity that sets it apart from all other white stones.

As a product of nature, subtle variations in crystal density or the faintest whisper of mineral trace may appear from piece to piece — this is the hallmark of genuine natural stone and adds to its authenticity.

About this molding: This quarter round molding is a slender, convex trim piece with a curved profile, designed to create a smooth, finished transition between a tiled wall and an adjacent surface such as a countertop, floor, or tub deck. The honed finish gives the piece a soft, matte surface that is refined without being reflective.

Design & Inspiration

Thassos White's pure, cool-white palette pairs beautifully with polished chrome or brushed nickel fixtures, white oak cabinetry, and glossy or honed white field tiles for a seamlessly luminous result. It is equally at home in minimalist modern spa bathrooms, classic all-white transitional baths, and coastal or Mediterranean-inspired interiors.

A quarter round trim in this format is ideal for finishing the exposed edge where a tile wall meets a countertop, shower seat, or tub surround, eliminating raw tile edges with an elegant curved detail. The honed surface softly echoes a matte or honed field tile installation while providing a clean, professional termination line that reads as intentional and custom.

Popular design combinations: pair with large-format honed Thassos White field tiles on shower walls and a polished Thassos pebble floor for a serene, all-white spa enclosure. 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 Quarter Round Trim is crafted from the purest white marble in the world, quarried on the Greek island of Thassos and prized for its snow-bright, crystalline appearance and exceptional uniformity of color. This molding brings the same luminous quality as Thassos field tiles to the finishing details of your installation.

The honed surface provides a smooth, matte finish that is understated and elegant, with a gentle sheen that complements both polished and honed tile fields. The quarter round profile curves gracefully from wall to countertop or floor, replacing sharp exposed edges with a soft, architectural transition that elevates the overall quality of the finished space.

This trim is ideal for use in shower surrounds, bathroom vanities, tub decks, and kitchen backsplash installations wherever a clean edge termination is required. As a clearance or specialty trim item, we recommend ordering a sample to confirm color match with your field tile before committing to a full order.

Material	Natural Marble
Color	Pure White
Type	Marble Molding — Quarter Round Trim
Finish	Honed
Sold By	Per Linear Foot
Application	Wall & Trim (Indoor)
Shade Variation	V1 — Uniform
Design	Contemporary / Transitional / Traditional
Country of Origin	Europe

✓ Shower Surround Edge TrimFinishes exposed tile edges cleanly and safely

✓ Tub Deck TransitionElegant curved profile from tile to tub ledge

✓ Vanity Backsplash TerminationPolished, professional edge at countertop junction

✓ Kitchen Backsplash TrimSoft curved finish at cabinets or open edges

— Outdoor UseNot recommended — freeze-thaw cycles may damage marble

— Floor Transition UseProfile not suited for underfoot traffic or floor thresholds

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, despite its density, is a pure calcite marble and should be sealed with a penetrating stone sealer before grouting and after installation. In wet areas such as showers, reseal every 6–12 months to prevent moisture infiltration and staining along the grout joint. Given its bright white color, diligent sealing is especially important to guard against any discoloration from soap, minerals, or organic matter.

Cleaning: Clean with a pH-neutral stone cleaner and a soft cloth or sponge — never use acidic cleaners (vinegar, citrus), alkaline degreasers, or abrasive scrubbers, as these will dull the honed surface and etch the calcite. Wipe up spills promptly, especially from acidic substances like shampoo, conditioner, or citrus-based soaps commonly found in shower environments.

Installation: Use white polymer-modified thinset mortar to avoid any gray bleed-through behind the bright white stone. Secure the quarter round with full back-buttering to ensure complete contact along the curved profile. Use non-sanded or unsanded grout for tight joints to avoid scratching the honed surface, and allow full cure time before exposing to moisture.

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.