Hi everyone! Here is the next Part in our pearl series, talking about quality and grading. I'm separating color and aurora out into a separate post because there are so many different possibilities when it comes to color.
TLDR:
The ‘grading’ of pearl quality is a bit varied, because there are several different potential grading systems. Being able to get a hanadama certificate for akoya pearls, or a GIA certificate for pearls generally are often a better way of guaranteeing quality, but might not be as easy to procure in the replica world.
When looking at pearls yourself, ‘Luster is King’. The most a pearl shines, glistens, glows from within, and the sharper the reflections on the surface or a pearl, the better. Essentially, when you look at it (preferably on video and at least one outside so the light is a bit more dispersed than studio lights), the more it makes you say ‘holy $h!t! That thing shiny and pretty af!’ the better the luster is.
I used AI to structure and simplify the below so it's easier to read, but the info is still correct. Trust me - y'all prefer AI's version to my unstructured monologuing...
1. The Core Quality Pillars
Luster (The Most Important Factor)
Luster is the quantity and quality of light reflected from the surface. It is the "glow" from within.
- High Quality: Sharp, bright reflections. You should be able to see your own facial features clearly on the surface (like a mirror).
- Low Quality: The reflection is fuzzy, dull, or "chalky." If it looks like a piece of white plastic, the luster is poor.
Nacre Thickness
Nacre is the actual pearl substance. Thin nacre happens when the pearl is harvested too early.
- The "Blinking" Test: If you rotate a bead-nucleated pearl (like an Akoya) and see a dark flash or the striped pattern of the internal bead, the nacre is too thin.
- Longevity: Thicker nacre equals better durability and a deeper, more "three-dimensional" glow.
- I'll be honest, I wouldn't worry about this one too much unless it's really obvious in videos or photos. Because if the luster is still making you ooh and ahh then nacre is probably ok.
- The only thing to be more aware of, is the 'nacre' around the drill hole. Because if it's bulging out, it might be a sign that it's an imitation pearl. (see this video at 05:30)
Surface Quality
Pearls are grown inside a living organism, so perfection is rare.
- Blemishes: Look for pits, bumps, scratches, or spots.
- Grading: High-quality pearls are 95% blemish-free. A few tiny "beauty marks" are acceptable and prove the pearl is real, but they shouldn't affect the structural integrity or be visible from a conversational distance.
Shape
- Round: The rarest and most expensive.
- Near-Round/Oval: Often used in necklaces where the slight imperfection isn't visible when worn.
- Baroque: Irregular and organic. These are currently very trendy in "modern" jewelry designs.
But remember, that Lustre is King.
2. Professional Inspection Tips
In-Person: The "Eye-to-Eye" Method
- The Background: Never judge a pearl on a black tray; it makes them look better than they are. Use a neutral grey or white cloth.
- The Light: Avoid direct, harsh spotlights. Use diffused natural light or a balanced overhead light.
- The Roll: Roll a strand of pearls across the tray. If they are perfectly round, they will roll straight. If they are "off-round," they will wobble.
- The Depth: Look into the pearl, not just at it. High-quality nacre has a "translucence" where the light seems to travel through several layers before reflecting back.
Online: Decoding the Listing
Buying pearls online requires a skeptical eye for photography.
- Watch for "Blown Out" Highlights: If the photos are so bright that the surface looks like a white blob, the seller might be hiding poor surface quality or low luster.
- Request "Macro" Shots: Ask for a close-up photo of the drill holes. This is where you can often see the thickness of the nacre layer surrounding the internal bead. If they’re fake pearls, there will be signs around the drill hole, too (see this video at 05:30)
- Ask for Videos: Luster is dynamic. A video taken under moving light is much harder to "doctor" than a still photo. If they can take a video in their studio and outside in natural light as well, that’s ideal.
- Check the Grading Source: "AAA" has no universal legal definition. A "Hanadama" or "GIA" certificate carries much more weight than a seller simply writing "Top Quality" in the description.
3. Pearl Matching (For Strands & Pairs)
In a necklace, Uniformity is a major value factor.
- The Gradient: In a graduated strand, the transition from small to large should be seamless.
- The Tone: Are all the pearls the same overtone? A single "creamy" pearl in a "silver-rose" strand will stand out like a sore thumb.
4. Quick Comparison Table
| Factor | High Quality | Low Quality |
|---|---|---|
| Reflection | Mirror-like, sharp edges | Dull, blurry, or "waxy" |
| Surface | Smooth, clean to the eye | Pitted, wrinkled, or "fish-scale" texture |
| Nacre | Deep glow, no "blinking" | Flat, translucent enough to see the bead |
| Match | Indistinguishable from neighbors | Varied sizes, shapes, or colors |
Useful videos and resources about pearl grading and showing a good range of different qualities include the below. Again, I’m not associated with any of these sources (I could only wish I got to spend all day looking at pearls!) I just really like the clarity of their images, the way they explain things, etc.
https://www.youtube.com/watch?v=W9ud2-Uq3Lk
https://www.youtube.com/watch?v=8drUJHFCBpw
https://www.youtube.com/watch?v=nKivPZVI8pY
https://www.whitevictoria.com/blog/pearl-grading-the-comprehensive-buyers-guide.html
https://www.pearlsofjoy.com/pages/tahitian-pearl-buying-guide?srsltid=AfmBOopgECSwtzWQSuEINTJPO4hfSvgvdXJa75adElTFxQrHcJHFrtVq
https://www.whitevictoria.com/blog/what-is-pearl-luster-and-what-is-its-value.html
https://www.whitevictoria.com/blog/pearl-grading-the-comprehensive-buyers-guide.html
https://www.whitevictoria.com/blog/commercial-tahitian-pearl-grading-guide-quick-grading-system.html