Inclusion in emeralds

Natural

Minute fluid inclusions parallel to the basal plane are the cause

Well-formed octahedral crystals of pyrite are a welcome sight in this
Colombian

Jagged three-phase inclusions consisting of salt solution, a gas bubble,
and a

The etched prism face of an emerald from Alexander County, North
Carolina,

Gota de aceite results from rapid columnar growth, causing a roiled
appearance

Brassy pyrite crystals are often seen in Colombian emeralds. Field of

This complex blocky fluid inclusion contains a liquid, a gas, and

Biotite crystals, shown here in polarized light, are common in emeralds
from

This emerald from North Carolina contains vibrant orangy brown rutile
inclusions. Field

Amphibole crystals are occasionally seen in emeralds from Zambia.
Field of view

Skeletal platy crystals of ilmenite are scattered throughout this Zambian
emerald. Field

This Colombian emerald shows prominent angular color zoning reminiscent
of a mountain

Blocky three-phase inclusions are crystallographically aligned in this
Brazilian emerald. Field of

An inclusion suite often seen in Colombian emeralds consists of carbonates,
pyrite,

Several rhombohedral magnesite crystals are present in this emerald
from Santa Terezinha

Tremolite inclusions are densely packed in this emerald from Zimbabwe.
Field of

A very rare inclusion of parisite is diagnostic of Colombian origin.
Field

This Colombian emerald contains a carbonate crystal that is included
with a

A rare inclusion of purple fluorite is seen in high contrast

Russian emeralds often host brightly colored reflective thin-film fluid
inclusions. These are

Treated

Clarity-enhancing resin showing a flow structure is present in the fracture
of

A partially filled fracture shows vibrant interference colors in the unfilled
areas

A large pocket filled with brown oil and a trapped gas

A well-filled fracture displays the diagnostic blue flash effect, which
confirms clarity

Gentle heating along a surface-reaching fracture causes oil to bead on
the

Synthetic

Nail-head spicules, as seen in this Regency hydrothermal synthetic
emerald, are indicative

Healed whitish feather-like inclusions of flux residue are present in
this Gilson

Flux residue often contains a contraction bubble, as seen in each

Synthetic phenakite crystals are often a by-product of synthetic emerald
growth and

This roiled, chevron-like growth is characteristic of hydrothermally
grown synthetic emeralds. Field