Seagrass Limestone 18x18 natural stone tile with honed finish, square shape, showcasing textured beige and gray tones.

Seagrass Limestone 18x18 Honed Tile

SL12X24H0518

SAMPLES SHIP FREE WITHIN 1–3 BUSINESS DAYS

$9.79 / sq. ft.

$22.03 / Piece

QUANTITY

SOLD BY: sq ft Minimum: 50 sq. ft.

Sq. Ft.

pieces

Minimum order: 50 sq. ft.

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.

Seagrass Limestone

Seagrass Limestone — distinctive olive green limestone with rich fossil texture and organic character. One of the most unique and visually striking limestone varieties available. Polished and honed finishes in tile and mosaic formats for bathrooms, kitchen backsplashes, and feature walls. Free sample shipping on all products.

About Seagrass Limestone Honed Tile

Material Education

Seagrass Limestone is a naturally occurring sedimentary stone quarried from deposits in Asia, prized for its warm, earthy palette of sage green, olive, taupe, and cream tones that evoke the organic hues of coastal grasslands. Its subtly mottled surface reveals fossilized organic matter and gentle tonal shifts that lend depth and authenticity to any interior. The honed finish softens the stone's surface to a smooth, low-sheen matte that highlights its natural complexity without the glare of polish.

As a genuine natural stone, Seagrass Limestone exhibits moderate variation in color and fossil patterning from tile to tile — a hallmark of authentic stone and an asset to any design that values organic character.

About this tile: This 18×18 honed tile offers a generous large-format field that minimizes grout lines and allows the stone's natural color movement to read as a continuous, seamless canvas — ideal for flooring and wall installations where coverage and cohesion are priorities.

Design & Inspiration

Seagrass Limestone's muted green and taupe palette pairs beautifully with warm brass fixtures, white oak cabinetry, natural linen textiles, and rattan accents for an organic modern or biophilic interior. It also harmonizes with aged bronze hardware and terracotta accessories in Mediterranean and transitional design schemes.

The 18×18 large-format size is especially effective on floors, where fewer grout lines create a calm, expansive feel — perfect for open-plan living areas, entryways, and spa-style bathrooms. On walls, the format delivers a sophisticated, almost monolithic look that grounds a space with earthy warmth.

Popular design combinations: Seagrass Limestone floors paired with warm brass fixtures, creamy linen walls, and white oak vanities for a nature-inspired spa bathroom. Explore the full Limestone collection for coordinating sizes, and browse more natural stone tile for complementary looks.

Ships in 2–3 Days

Free Sample Shipping

Nationwide Delivery

Premium Natural Stone

Secure Packaging

Seagrass Limestone is a sedimentary natural stone sourced from Asia, distinguished by its signature blend of sage green, olive, taupe, and cream tones that mirror the organic beauty of coastal meadows and wetlands. Subtle fossil inclusions and gentle tonal variation give each tile a one-of-a-kind character that manufactured materials simply cannot replicate.

Finished to a smooth honed matte, this 18×18 tile diffuses light evenly across its surface, reducing glare while maintaining a sophisticated, understated elegance. The large format minimizes grout joints, allowing the stone's natural color movement to flow uninterrupted across floors and walls, and speeds up installation coverage compared to smaller formats.

Seagrass Limestone is well suited for residential floors, bathroom floors and walls, entryways, and feature walls where its earthy palette can anchor a room's design. Because limestone is softer and more porous than marble or granite, sealing before and after installation is essential — we recommend ordering a sample first to confirm the color tone in your specific lighting.

Material	Natural Limestone
Color	Sage Green, Olive, Taupe, Cream
Type	Field Tile
Tile Size	18 × 18 inches
Finish	Honed
Sold By	Per Sq. Ft.
Application	Floor & Wall (Indoor)
Shade Variation	V3 — Moderate Variation
Design	Organic Modern / Transitional / Mediterranean
Country of Origin	Europe

✓ Bathroom FloorEarthy tones create a grounding spa atmosphere

✓ Entryway FloorLarge format makes a bold, welcoming statement

✓ Living Room FloorMinimal grout lines deliver seamless, open coverage

✓ Feature WallWarm palette anchors accent walls naturally

— High-Traffic Commercial FloorsSofter limestone is susceptible to scratching and etching under heavy use

— Outdoor UseNot recommended for freeze-thaw climates without verified frost resistance

Free Shipping: This product ships at standard freight rates calculated at checkout based on your location and order size.

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: Seagrass Limestone is a porous sedimentary stone and must be sealed before grout application and again after installation. In wet areas such as bathroom floors and showers, reseal every 12–18 months with a penetrating impregnating sealer to protect against moisture, staining, and efflorescence.

Cleaning: Clean with a pH-neutral stone cleaner diluted in water and a soft mop or cloth. Never use vinegar, citrus-based cleaners, bleach, or any acidic or alkaline products — limestone is particularly vulnerable to acid etching, which can permanently dull the honed surface. Blot spills immediately, especially oils, wine, and coffee.

Installation: Use a white polymer-modified thinset mortar to prevent any gray bleed-through on lighter tiles. For 18×18 large-format tiles, back-butter each tile in addition to applying thinset to the substrate to ensure full coverage and prevent hollow spots. Use tile spacers for consistent joint width and a level setting bed to avoid lippage across the large format.

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.