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Butterfly Blue

Origin: China
Material: Natural granite (dense, exterior grade)

Butterfly Blue is a premium dark blue granite with a cool steel-blue base and a sparkling crystalline grain that can read as scattered silvery-blue highlights across the surface. It works as a strong “blue program” option for memorials—distinct from standard black/grey palettes while staying formal and architectural.

Visual Character (Color & Pattern)

Tone: Dark blue-grey / steel-blue

Pattern activity: Medium; granular “sparkle” with clouded shading (not veiny)

Texture: Fine to medium grain; visually stable on larger faces

Finishing Behavior

Polished / Gloss: Maximum depth and premium sheen; strongest “sparkle” effect for showroom faces

Honed / Matte (if specified): Reduced glare; calmer, more architectural dark blue

Engraving & Readability

Recommended: Polished inscription fields for crisp lettering and portraits

Because of the sparkling grain, layout planning is recommended for large portrait/text zones (select cleaner areas)

Recommended Applications (Memorial / B2B)

Uprights, slants, ledgers, bases, multi-piece sets

Premium models where a dark, formal blue tone is required

Why It Works for Partners (B2B)

Catalog differentiation: recognizable dark-blue segment beyond black/grey

Showroom value: polished surface sells visually and photographs well

Repeatable production: controlled pattern when ordered with lot/block control

Technical Data (from supplier card)

Mohs hardness: 6–7

Density: 2790 kg/m³ (≈ 2.79 g/cm³)

Water absorption: 0.1–0.5%

Frost resistance: 50 cycles

Heat resistance: N/D

Acid resistance: No reaction (acids/alkalis)

Re-polishing: N/D

Abrasion / wear: N/D

Quality & Matching Notes

Natural variation: intensity of blue tone and sparkle density can vary by lot

For matched sets / repeat orders: request the same block/lot to align tone and surface character