Pearl Education
Pearl Guide · Femme Fatale
Know What
You Own
A pearl is the only gem created by a living creature. No two are identical. This guide covers the GIA 7-factor grading system, the four major pearl varieties, and the standard every FFM piece is held to.
GIA Graduate Pearls · With Honors
The 7 Factors That
Define a Pearl
The GIA (Gemological Institute of America) grading system is the global standard for evaluating pearl quality. As a GIA Graduate Pearls certified specialist, every FFM pearl is assessed across all seven criteria before it reaches you.
The layers of aragonite crystals secreted by the oyster that build the pearl. Thicker nacre means deeper luster and greater durability. This is the foundation of everything.
The intensity and sharpness of light reflected from the pearl's surface. The most visually important quality factor. Excellent luster creates a mirror-like reflection — you should almost see yourself in it.
The cleanliness and smoothness of the pearl's outer layer. Blemishes, spots, and wrinkles are evaluated under diffused light. No pearl is perfectly clean — but fewer blemishes mean higher value.
Pearls form in 7 shape categories. Round is the rarest and most valuable — a perfectly round pearl requires precise conditions and considerable time. Baroque and drop shapes have their own distinct beauty.
Evaluated across three dimensions: body color (the main hue), overtone (the translucent color layer on the surface), and orient (the iridescent shimmer seen from certain angles). Together they create each pearl's unique identity.
Measured in millimetres at the pearl's widest point. Larger pearls require longer cultivation time and are significantly rarer — a 1mm increase in size can double the value of a South Sea pearl.
For strands, bracelets, and pairs — the consistency of size, shape, color, and luster across all pearls in the set. Perfect matching in a strand of Akoya pearls can take years to assemble.
Every piece graded on all 7 factors by our GIA-certified founder before it is offered for sale. Only the top 5–8% of any harvest meets our standard.
The Four Varieties
Pearl Types We Carry
Each pearl variety has a distinct origin, character, and price range. Understanding the differences helps you choose with confidence — and know exactly what makes your pearl worth what it costs.
Pearl
The most versatile pearl. Modern freshwater cultivation in Zhuji produces near-perfect round forms with exceptional luster. One of freshwater's most remarkable qualities: a single Hyriopsis mussel can produce up to 50 pearls at once — making freshwater the most abundant cultured pearl in the world. FFM selects only gem-grade freshwater — the top tier most retailers never carry. Our founder travels personally to Shanxiahu market to select each batch.
Type 01
Tissue Nucleated
6–9mm
A small piece of mantle tissue is inserted as the nucleus. Produces a fully nacre-coated pearl with no bead core — the nacre is the entire pearl. Classic freshwater form with excellent luster.
Type 02
Edison · Bead Nucleated
9–20mm
A round bead nucleus is inserted — the same technique used for South Sea pearls. Produces larger, rounder freshwater pearls that rival seawater quality at a more accessible price. The Edison pearl is the pinnacle of freshwater cultivation.
Pearl
The classic pearl. Known for mirror-like luster — the sharpest reflection of any cultured pearl. The Akoya is the benchmark against which all other pearls are measured. Unlike freshwater mussels, all seawater oysters produce only one pearl per nucleus — one oyster, one pearl, one chance. Our founder's first pearl encounter was an Akoya at the Nagahori booth at Bangkok Jewelry Fair — the moment everything changed.
The Classic Standard 1 oyster · 1 nucleus · 1 pearlGolden Pearl
The rarest cultured pearl. The extended nacre deposition produces extraordinary luster depth — the defining quality of top-tier South Sea pearls. Like all seawater pearls, each Pinctada maxima oyster produces only one pearl — cultivated over 18–24 months in waters off the Philippines, Indonesia, and Australia. Through our exclusive Nagahori partnership, Femme Fatale carries the world's only naturally heart-shaped South Sea Golden pearl. Available nowhere else in Thailand.
Thailand Exclusive · Nagahori 1 oyster · 1 nucleus · 1 pearlPearl
The only naturally dark cultured pearl. Produced in the pristine lagoons of French Polynesia — the water quality directly affects the overtone intensity. Like all seawater pearls, each Pinctada margaritifera oyster yields only one pearl per nucleus. No two Tahitian pearls share the same overtone combination. The peacock overtone (green-purple iridescence on a dark body) is the most prized and rarest.
Naturally Dark · Unique Overtones 1 oyster · 1 nucleus · 1 pearlThe FFM
Selection Standard
Most retailers accept whatever grade a distributor sends them. We do not. Every pearl that enters our collection is personally selected and graded by our GIA-certified founder against all 7 criteria.
The result: you never receive a pearl that hasn't been held, turned in the light, and approved by someone who knows exactly what they're looking at.
- Personal selection at source — no remote purchasing
- All 7 GIA factors evaluated per pearl
- Top 5–8% of harvest accepted
- Rejected pearls returned to farm — not discounted
- Full provenance traceable for every piece
Ready to find
your pearl?
Every piece in our collection has been graded, selected, and approved by our GIA-certified founder.
Shop the Collection Meet the Founder