- Joined
- Jan 11, 2006
- Messages
- 58,559
What I don’t understand is why the AP price is so much more than TPS, even with the same grading?
https://www.thepearlsource.com/pearl-necklaces/white-akoya-pearl-necklaces.php
The grading is all over the place, isn't it?! The key is that they aren't really using equivalent scales. What I have gathered is that AP says they grade like Mikimoto with AAA the highest. The minimum level for Hanadama is a couple of steps below that. So these other popular vendors have Hanadama as their highest, and AAA, AA, etc, below that. So it seems that MM and AP carry higher grade pearls than these other vendors, potentially, although Hanadama can start at a grade lower than AA (AA1) and be that or any grade higher. So basically, these other vendors' AAA around MM's A level range at best.
It's taken me a few days to figure that out! Here's the Mikimoto grading scale which AP goes by:
http://www.americanpearl.com/qualitycheck.html