Product Overview

MSI XL RockMount™ Stonevera Pearl 9" × 18" Splitface Marble Corner Ledger Panel provides a finished 90-degree transition for Stonevera Pearl stacked-stone installations. Its preassembled L-shaped construction allows the natural-marble pattern to wrap continuously around fireplaces, columns, façades, retaining walls, and outdoor-kitchen structures without exposing flat saw-cut edges.

Stonevera Pearl combines crisp white and luminous pearl tones with subtle soft-gray mineral movement. Its lightly textured splitface surface produces gentle architectural depth while retaining a refined, clean appearance.

Designed specifically for the coordinating 9" × 24" XL flat panels, this corner maintains consistent nine-inch courses and matching natural-stone texture around outside corners.

Technical Specifications

MSI confirms the marble composition, cool-white color, splitface finish, matching flat panel, and corner SKU on the official Stonevera Pearl page.

Recommended Applications

• Fireplace Corners: Wraps fireplace projections and chimney structures with continuous white marble.

• Column and Pillar Wraps: Creates finished outside corners without exposing flat panel cuts.

• Exterior Façades: Provides clean transitions around entry features, wall projections, and architectural returns.

• Outdoor-Kitchen Islands: Wraps barbecue islands, bars, and entertainment structures.

• Planter and Retaining Walls: Finishes masonry corners with a decorative natural-marble veneer.

• Interior Feature Walls: Allows a stacked-stone installation to continue around partitions, columns, and wall returns.

• Commercial Features: Suitable for hospitality columns, reception walls, restaurant interiors, and retail displays.

Installation & Handling Guidelines

⚠️ IMPORTANT: INSTALL CORNERS BEFORE FLAT PANELS

Establish the corner courses first, then cut and fit the matching 9" × 24" panels into the corner returns.

• Alternate the Returns: Rotate successive corner pieces so the 12-inch and 6-inch returns alternate between walls. This avoids a continuous vertical seam.

• Approved Substrate: Install over clean, flat, structurally sound concrete, masonry, or properly secured cementitious backer board.

• White Mortar Required: Use premium white polymer-modified Large and Heavy Tile mortar meeting ANSI A118.4 or A118.15 and approved for natural marble.

• Mortar Coverage: Directionally trowel the substrate and back-butter every corner piece. Exterior, fireplace, and wet-area installations require substantially complete coverage.

• Tight-Joint Installation: Fit corners and panels closely together. Conventional exposed grout joints are normally not used.

• Maintain Course Alignment: Keep consistent nine-inch courses so the corners align correctly with the coordinating flat panels.

• Dry-Fit Each Course: Confirm that interlocking ends, return lengths, and stone-strip elevations fit properly before applying mortar.

• Protect the White Marble: Keep the surface free from gray mortar, rust, metal fragments, soil, and strongly pigmented construction materials.

• Exterior Installation: Provide proper waterproofing, flashing, drainage, movement accommodation, and exterior-rated setting materials.

• Fireplace Installation: Follow the fireplace manufacturer’s clearance requirements and applicable building codes.

• Cutting Safety: Wet-cut with a diamond blade designed for marble. Never dry-cut or grind because fabrication releases hazardous respirable silica dust.

• Order Allowance: Add approximately 10–15% for cuts, breakage, shade blending, and future repairs.

Quantity Calculation

Each corner piece covers approximately nine vertical inches.

Calculate each vertical corner separately before adding the installation allowance.

Shade Variation

Stonevera Pearl is genuine natural marble. Differences in white tone, gray mineral movement, strip thickness, splitface texture, and surface depth are natural characteristics.

Blend the corner pieces with the flat panels before installation. Confirm that both products share an acceptable color and texture range before permanently setting them.

Care & Maintenance

• Remove dust with a soft-bristle brush or vacuum attachment.

• Clean with warm water and a neutral-pH cleaner formulated for marble.

• Avoid vinegar, lemon, acidic cleaners, bleach, abrasive powders, and wire brushes.

• Remove cooking oils, smoke residue, fertilizer, rust-producing objects, and pigmented spills promptly.

• A penetrating marble sealer may be beneficial in exterior, moisture-, grease-, or stain-prone locations.

• Test sealers first because some formulations may alter the pearl-white color.

• Inspect exterior installations periodically for open joints, failed sealant, drainage problems, or moisture intrusion.

Design Profile

• Aesthetic: Contemporary coastal, quiet luxury, organic modern, modern farmhouse, and refined transitional.

• Color Character: Crisp pearl white with subtle soft-gray natural-marble movement.

• Visual Advantage: The L-shaped construction preserves the appearance of continuous stacked masonry around outside corners.

• Complementary Materials: White oak, walnut, creamy quartz, warm plaster, pale limestone, and architectural concrete.

• Complementary Metals: Brushed brass, champagne bronze, polished nickel, stainless steel, and matte black.

• Lighting Recommendation: Directional lighting emphasizes the splitface texture and varying natural-stone depths.

Frequently Asked Questions

Is this a flat ledger panel?

No. It is a preassembled L-shaped corner designed to wrap 90-degree outside corners.

Is the corner 9" × 18" or 9" × 12" × 6"?

Both descriptions refer to the same product. The corner is approximately nine inches high with 12-inch and 6-inch returns. The returns total 18 inches.

What is the correct corner SKU?

The correct Stonevera Pearl corner SKU is LPNLMSTOPEA918COR.

Which flat panel matches this corner?

It coordinates with Stonevera Pearl 9" × 24" marble ledger panels, SKU LPNLMSTOPEA924.

Is Stonevera Pearl marble or quartzite?

MSI classifies Stonevera Pearl as genuine natural marble.

How many pieces are required per vertical foot?

Each piece is nine inches high, so approximately 1.34 pieces are required per vertical foot.

Does the corner require grout?

It is designed for tight-joint installation with minimal visible grout.

Can it be installed outdoors?

Yes, when installed using an approved exterior veneer system with proper waterproofing, flashing, drainage, mortar coverage, and movement accommodation.

Can it be used on floors?

No. Stonevera Pearl corner panels are intended exclusively for vertical applications.

Should the marble be sealed?

A penetrating marble sealer may be beneficial in exterior, wet, grease-prone, or stain-prone installations. Test before applying it to the complete project.