Materials Guide & Reference Library

Finishing & Sealing Behaviour

Sealing a diamond painting changes how it looks.

After sealing people often notice:

• sparkle softens
• colours deepen slightly
• AB drills glow less strongly
• the surface looks more uniform

Yet the painting feels more secure and durable.

This leads to confusion, sealing protects the artwork, but it also alters how light interacts with it.

Diamond paintings shine because each drill reflects light individually.

Sealant creates a thin film across the surface.

So instead of light bouncing off thousands of separate facets,
light first hits the coating layer.

Result:

The drills remain visible
but the reflections become blended

You gain stability
You lose some sharp sparkle

However, the effect depends on where the sealant sits.

On top of drills → dulling
Between drills → locking

We treat sealing as use-dependent.

Recommended (functional pieces)

• Coasters
• Placemats
• Book covers
• Bags
• Frequently handled artwork

Optional (display pieces)

• Framed wall art
• High AB or crystal artwork
• Collector pieces

Our Application Method (Best Balance)

This leaves sealant in the gaps while removing it from

the drill tops.

Result:

The drills stay locked
The shine stays visible

Heavy coat (unwiped)
• Maximum durability
• Lowest sparkle

No sealant
• Maximum sparkle
• Lowest protection

Controlled wiped coat (recommended)
• Strong hold
• Preserved brilliance
• Natural appearance

STUDIO NOTE - CONTEXT & LIMITATIONS

Many guides treat sealing as mandatory or harmful.

In reality, sealing is a finishing tool, not a rule.

Applied incorrectly it reduces sparkle.

Applied correctly it improves durability with minimal visual change.

The goal is not “sealed vs unsealed”

The goal is controlled sealing.