Blue Lace Agate | Gemopedia

Blue lace agate comes from the Republic of Namibia and Kenya and is known for its powder blue coloring and white parallel wavy bands that resemble lace.
Colors
Blue, White

Blue Lace Agate Classification

Common Name

Blue Lace Agate

Species

Quartz

Variety

Chalcedony

Colors

Blue, White

Alternate Names

Gemstone Groups

Key Separations

RI, SG, appearance and fracture

Comments

Blue Lace Agate Optical Properties

Transparency

Semitransparent - Semitranslucent

Refractive Index

1.535-1.539

Birefringence

0.004-0.004

Optic Character

Uniaxial

Optic Sign

Positive

Polariscope Reaction

Aggregate (AGG)

Fluorescence

SWUV: Inert
LWUV: Inert

CCF Reaction

Pleochroism

None

Dispersion

Strength: none

Comments

Blue Lace Agate Chemistry & Crystallography

Chemical Name

silicon dioxide (aka silica)

Chemical Formula

SiO2

Synthesis

Crystal System

Trigonal

Classification

Silicate

Nature

Natural

Crystallinity

Polycrystalline

Comments

Blue Lace Agate Characteristic Physical Properties

Hardness

6.5-7

Streak

Specific Gravity

2.55-2.7 Typical:2.6

Toughness

Excellent

Inclusions

Blue lace agate is a distinctive blue and white alternating banded material.

Luster

Vitreous

Stability

Good

Fracture

Conchoidal Granular

Cleavage

None

Comments

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