1 X 12 X 3/8 Thassos White Marble Polished Quarter - Round Trim Molding
1 X 12 X 3/8 Thassos White Marble Polished Quarter - Round Trim Molding
1 X 12 X 3/8 Thassos White Marble Polished Quarter - Round Trim Molding
1 X 12 X 3/8 Thassos White Marble Polished Quarter - Round Trim Molding
1 X 12 X 3/8 Thassos White Marble Polished Quarter - Round Trim Molding
1 X 12 X 3/8 Thassos White Marble Polished Quarter - Round Trim Molding
1 X 12 X 3/8 Thassos White Marble Polished Quarter - Round Trim Molding
1 X 12 X 3/8 Thassos White Marble Polished Quarter - Round Trim Molding
1 X 12 X 3/8 Thassos White Marble Polished Quarter - Round Trim Molding
1 X 12 X 3/8 Thassos White Marble Polished Quarter - Round Trim Molding
1 X 12 X 3/8 Thassos White Marble Polished Quarter - Round Trim Molding
1 X 12 X 3/8 Thassos White Marble Polished Quarter - Round Trim Molding

1 X 12 X 3/8 Thassos White Marble Polished Quarter - Round Trim Molding

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Description

Thassos White Marble 1x12 Quarter-Round Trim | Polished Greek Stone

Meta Description: Finish your project with Thassos White Marble 1x12 Quarter-Round trim. Pure white Greek marble with a polished finish. Perfect for luxury showers, niches, and backsplashes.

Thassos White Marble Polished Quarter-Round Trim (1" x 12")

Product Overview

Elevate your architectural details with the timeless elegance of Thassos White Marble Polished Quarter-Round Trim Molding. Quarried from the legendary Greek island of Thassos, this marble is globally renowned for its exceptional purity and brilliant, snow-white radiance.  

The Gold Standard of White Marble

Unlike standard marbles, Thassos White features a unique crystalline structure that catches and reflects light, creating a luminous, "sparkling" effect. This 1x12 quarter-round profile provides a smooth, curved edge that ensures a seamless transition between surfaces while adding a touch of high-end glamour.  

Versatile Luxury Applications

This classic finishing piece is the designer's choice for refined transitions in high-end residential and commercial projects:

Framing & Edging: Create a clean, sophisticated border for wall tile installations.

Shower Transitions: Soften the edges of shower benches, curbs, and recessed niches.

Kitchen Backsplashes: Add a professional "cap" to the top of your backsplash for a polished look.

Countertop Details: Provide a smooth, elegant finish to custom marble countertops and shelving.

Key Features & Benefits

Pristine Greek Marble: Sourced directly from Greece, offering the highest level of whiteness available in natural stone.  

High-Gloss Polished Finish: The gleaming surface enhances the stone’s natural brilliance and makes it incredibly easy to maintain.

Classic Quarter-Round Profile: The 3/8" thickness and curved face offer a soft, safe, and beautiful edge for corners and transitions.

Unique Natural Character: As a genuine natural stone, each piece features subtle, one-of-a-kind variations that guarantee an authentic, custom appearance.

Enduring Durability: Thassos marble is a dense, long-lasting material that maintains its value and beauty for decades with proper care.  

Frequently Asked Questions (FAQ)

What makes Thassos White marble different from Carrara marble?

While Carrara marble is known for its grey veining, Thassos White is prized for its lack of veining and its pure, brilliant white color. It is considered one of the most luxurious and "cleanest" white marbles in the world.  

Where is a quarter-round trim typically used?

Quarter-rounds (also known as "pencil liners" or "beads") are used to finish the raw edges of a tile installation. They are perfect for turning corners in a shower, edging a soap niche, or capping the top of a wainscot wall.  

Does Thassos marble require special care?

Like all natural marble, Thassos is porous. We recommend using a high-quality penetrating sealer upon installation to protect against staining. For daily cleaning, use a pH-neutral stone cleaner and avoid acidic substances like vinegar or lemon juice.

Can this trim be used in wet areas?

Yes. Thassos White marble is excellent for showers, bathrooms, and kitchen backsplashes. Because it is a natural stone, ensuring a proper seal is key to long-term performance in wet environments.  

Is the color consistent across all pieces?

Thassos is known for being the most consistent white marble available. However, because it is a product of nature, slight crystalline variations may occur, which adds to the stone's organic beauty.  

Product Specifications

Material: Authentic Thassos White Marble

Dimensions: 1" (Width) x 12" (Length)

Thickness: 3/8"

Finish: Polished (High Gloss)

Profile: Quarter-Round / Pencil Trim

Origin: Greece

Application: Wall Edging, Shower Niches, Backsplashes, Countertop Trim

Minimum Order & Freight Shipping

Minimum Order Requirement:

Marble tiles ship with an 80 sq. ft. minimum order due to freight shipping requirements. The 80 sq. ft. can be combined across multiple products from our marble collection (for example, mixing 12"x24" tiles with mosaic accents or trim pieces). Your order will be carefully packaged in a protective crate and delivered to your location via common freight carrier.

Need to see it first? Order a sample to check the color, finish, and veining before committing to your full order.

Natural Stone Care & Maintenance Guide

Daily Cleaning & Surface Care

  • Use pH-Neutral Cleaners: Only use cleaners specifically formulated for natural stone. Avoid vinegar, lemon juice, bleach, or generic "all-purpose" sprays, as acidic substances will chemically etch (dull) the marble surface.
  • Soft Application: Use a clean microfiber cloth or a soft mop. Never use abrasive scrubbing pads, steel wool, or vacuum attachments with "beater bars" that can scratch the polished finish.
  • Immediate Spill Response: Natural stone is porous. Blot spills immediately with a clean paper towel; do not wipe, as this spreads the liquid.

Long-Term Protection

  • Professional Sealing: A high-quality penetrating sealer must be applied upon installation. For high-traffic areas or kitchen backsplashes, re-sealing is recommended every 6–12 months to maintain a moisture barrier.
  • Heat & Acid Protection: Always use coasters, trivets, and placemats. Marble is sensitive to thermal shock and acidic reactions from wine, coffee, and citrus.
  • Debris Management: For floor installations, use walk-off mats at entrances. Dust-mop frequently to remove sand and grit that act as abrasives underfoot.
Shipping & Returns
  • Free shipping on orders over $2000
  • Standard delivery within 2–5 business days
  • Easy 30-day returns
  • Return items in original condition for a full refund
Free Shipping on Orders over $2000

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Easy 30-day Returns

Changed your mind? No problem. You have 30 days to return your item, no questions asked.

Standard delivery within 2–5 business days

Return items in original condition for a full refund

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Reviews

Customer Feedback

What do people think about Wokiee?

Exceptional Quality and Timeless Beauty

The Carrara marble exceeded our expectations. The veining is elegant, the finish is consistent, and it instantly elevated the entire space. You can clearly feel the quality when you see it in person.

MSI Renzo Sky Picket 2.5X13 Glossy

Michael R.

Residential Renovation Project

Reliable Choice for Professional Projects

We’ve used Carrara marble from multiple suppliers, and this collection stands out in terms of consistency and packaging. Tiles arrived well-protected and matched perfectly across batches.

Daniel K.

General Contractor

Beautiful, Clean, and Easy to Work With

The marble has a refined, clean look that works beautifully in both modern and classic interiors. Installation was smooth, and the final result looks premium without being overly flashy.

Emily S.

Interior Designer

Exactly What We Were Looking For

We wanted a classic Calacatta look without surprises — and that’s exactly what we got. True color, natural veining, and a very polished overall feel. Would confidently order again.

Laura T

Homeowner

Perfect for Pool Areas and Outdoor Spaces

We used these tiles around the pool and outdoor seating area, and the performance has been excellent. The surface feels solid and safe, while the look remains clean and premium even under constant sun and water exposure.

Mark L.

Landscaper

Durable Outdoor Tiles with Refined Aesthetic

Finding outdoor tiles that balance durability and design isn’t easy. These tiles deliver both. They handle temperature changes well and still maintain a refined, architectural appearance that works beautifully in outdoor projects.

Sofia R.

Exterior Design Specialist