Melo Pearl | Gemopedia

The melo pearl comes from the melo melo sea snail, a group of sea snails with scroll-like volute shells found along in the South China Sea. The melo pearl is a non-nacreous pearl with colors ranging from light tan to brown, but orange is the most sought-after color. Melo pearls are extremely rare, as no harvesting techniques exist.
Alternate
Names
Melo Melo Pearl
Colors
Orange To Red-Orange

Melo Pearl Classification

Common Name

Melo Pearl

Species

NA

Variety

Melo Pearl

Colors

Orange To Red-Orange

Alternate Names

Melo Melo Pearl

Gemstone Groups

Key Separations

RI, birefringence blink, magnification and appearance.

Comments

Use birefringence blink method to obtain birefringence. Come from the Melo melo snail. Melo pearls are not considered true pearls. Melo pearls typically weigh less than conch pearls.

Melo Pearl Optical Properties

Transparency

Translucent - Opaque

Refractive Index

1.53-1.685

Birefringence

0.155

Optic Character

Optic Sign

Polariscope Reaction

Aggregate (AGG)

Fluorescence

SWUV: Variable
LWUV: Variable

CCF Reaction

Pleochroism

None

Dispersion

Comments

Melo Pearl Chemistry & Crystallography

Chemical Name

Calcium carbonate, conchiolin and water

Chemical Formula

CaCO3 with H2O and other organic materials

Synthesis

Crystal System

NA

Classification

Carbonate

Nature

Natural

Crystallinity

Aggregate

Comments

Melo Pearl Characteristic Physical Properties

Hardness

2.5-4

Streak

Specific Gravity

2.87-2.83 Typical:2.85

Toughness

Fair

Inclusions

Melo pearls have a flame like structure and does not have nacre but a porcelain like finish.

Luster

Dull

Stability

Poor

Fracture

Uneven

Cleavage

None

Comments

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