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Field guide · 04

Reading inclusions.The marks a stone carries — and what they mean.

Natural jadeite carries evidence of its own history. Some of it is structural, most of it is cosmetic, and a small amount is human. This page names each mark plainly, so a report card feels less like a warning and more like a language.

Before we begin

Three things worth setting aside.

01

Only a flawless stone is a good stone.

Natural jadeite is rarely flawless. A piece described as perfect is either exceptional and priced as such, or not what it claims to be.

02

Any inclusion means walk away.

Many marks are cosmetic, not structural. Reading them well is how you find character and value.

03

Every line inside a stone is a crack.

Water lines, healed lines and fissures are three different things. Only the last is a structural concern.

01Structural · avoid

Fissure裂 · Fissure

Reference photograph — Fissure.
What it is

An open break in the stone. A fingernail catches; light passes through the gap.

How it forms

From geological stress, quarrying, or later impact.

How we read it

The one trait we treat as structural. On a bangle or a load-bearing point, a fissure is a reason to pass.

02Read in context

Healed石纹 · Healed line

Reference photograph — Healed.
What it is

A former fissure that minerals have refilled and closed. Visible under light, but the surface is smooth.

How it forms

Formed during the stone's own history and healed inside the crystal structure.

How we read it

Structurally stable. We disclose position and depth so you can decide how it reads against the design.

03Natural feature

Cotton棉 · Cotton

Reference photograph — Cotton.
What it is

Soft white clouds, flecks or veils inside the stone — the space between hard-jade crystals.

How it forms

A natural feature of jadeite. Almost every piece carries some.

How we read it

Not a flaw so much as a fingerprint. Even snow-flake cotton, when evenly distributed, is prized for its atmosphere.

04Read in context

Mineral杂 · Mineral spot

Reference photograph — Mineral.
What it is

A patch or fleck of a different colour — iron, manganese or chromium sitting inside the matrix.

How it forms

Trace minerals absorbed during formation.

How we read it

In the hands of a good carver, a well-placed spot becomes the sun, a leaf, an eye — the source of qiaose巧色 work.

05Read in context

Xian癣 · Companion mineral

Reference photograph — Xian.
What it is

A dark green or black patch of amphibole or chromite, often sitting alongside green colour.

How it forms

A mineral companion to jadeite's green — the trade phrase is 癣随绿走.

How we read it

Live xian is read alongside colour and can add character; heavy, bristle-like xian we avoid.

06Structural · avoid

Species变种 · Species change

Reference photograph — Species.
What it is

A slow drift of colour and lustre in an unstable stone — yellowing, dulling, drying out.

How it forms

The risk lives in the crystal structure itself — young, loose material is prone to it.

How we read it

We only offer old-species material (ice grade and above) precisely to avoid this. Buying jadeite is buying its next thirty years.

Treatment classes

A, B, C — the industry code for how a stone has been touched.

  • A
    Natural jadeite天然翡翠
    Cut, ground, polished. No chemical treatment.
    The only category we sell. NGTC / GIA certifiable.
  • B
    Bleached & resin-filled漂白注胶
    Acid-bathed to strip impurities, then injected with polymer.
    Not sold. Structure and lustre degrade over time.
  • C
    Dyed染色
    Colour introduced artificially, often pooling in fissures.
    Not sold. Colour is not the stone's own.
  • B+C
    Bleached, filled & dyed漂白注胶并染色
    Both treatments combined.
    Not sold.

Every piece we sell is Class A — natural jadeite whose colour, structure and lustre are its own. Independent laboratory reports accompany every order.

A method

Five steps to weigh a jadeite piece — calmly.

  1. 01

    Certificate first.

    Read the report before you read the stone. Insist on independent testing.

  2. 02

    Structure over surface.

    Any fissure on a load-bearing area is a hard no — surface beauty comes after safety.

  3. 03

    Read the marks in context.

    Position, size and count matter more than presence or absence.

  4. 04

    Weigh the whole piece.

    Species, colour, texture, translucency and workmanship — a single flaw rarely decides value.

  5. 05

    Buy for thirty years.

    Old-species material stays. Young material drifts. Choose accordingly.

Natural gemstones carry inclusions, colour variation and texture unique to each formation. Each piece is photographed as it is and its characteristics are listed in the spec sheet.

Consultation

Send us the piece you're weighing. We'll read it with you.