The state of Hawaii's labeling laws require the prominent display of the words "100% Kona Coffee". When you see "Kona Style" or "Kona Blend" dont't walk, run away.
Here are the various grades of Kona Coffee standardized by Hawaii's Dept of Agriculture which you can add to your arsenal of real Kona coffee knowledge.

PeaBerry- This tiny round highly dense Kona coffee bean is considered rare as it is only found in 5 % or less of all Konacoffee crops. The Arabica tree's cherry at times will produce these single tiny seeds [beans] due to stress instead of the usual two beans [seeds] producing a more concentrated, rich, smooth however not bitter flavor. We call these the "Bachelor beans" due to their refusal to share their lives with others. It is the prized Kona coffee pick of all Kona coffee estates and working Kona coffee farms. Kona Peaberry makes the ultimate "Real Kona Coffee" dark roast.
Color: Uniformly good green
Size: Optional (May be specified)
Moisture Content: 9% to 12.2%
Defects: 18 full imperfections per 300 grams
Other Beans: One Type: not > 3% other type beans
Undersize: No more than 10% by weight

Extra Fancy- These beans are also less common due to their unusual large size. We call them "Happy beans" Because they lived off the fat of the land like no other beans and got away with it fat and happy. The have incredible aroma, are buttery and robust in flavor and make for the perfect "Real Kona coffee" medium dark roast. Color: Uniformly good green
Size: Larger than 19/64"
Moisture Content: 9% to 12.2%
Defects: 8 full imperfections per 300 grams
Other Beans: One Type: not > 3% other type beans
Undersize: No more than 10% by weight

Fancy- These are large beans we call the "Little Giants" These beans are not as large as the Extra Fancy however share the same attributes with an additional flavor of fruitiness which can be detected by trained Real Kona coffee lovers. This grade is also considered a medium dark roast. Color: Uniformly good green
Size: Larger than 18/64"
Moisture Content: 9% to 12.2%
Defects: 12 full imperfections per 300 grams
Other Beans: One Type: not > 3% other type beans
Undersize: No more than 10% by weight
 

Kona Grove NO.1  These are beans average in size and make for a fruity medium bodied roast. Color: Uniformly good green
Size: Larger than 16/64"
Moisture Content: 9% to 12.2%
Defects: 18 full imperfections per 300 grams
Other Beans: One Type: not > 3% other type beans
Undersize: No more than 10% by weight

Prime  Smaller in size than Kona Grove NO.1 these little beans make for a lighter bodied and smooth mild medium roast. As with most other grades you will enjoy the unique trace of fruitiness which makes Real Kona coffee so special. Size: Optional (May be specified)
Moisture Content: 9% to 12.2%
Defects: 15% defective beans incl. not > 2% full sour, stinker, black or moldy
Included therein no more than 5% by weight sour or black beans.

Select or Estate- This is our choice. It is the "Natural pick" of all grades of cherries harvested together for a very unique aroma and taste.
Size: Optional (May be specified)
Moisture Content: 9% to 12.2%
Defects: 5% defective beans incl. not > 2% full sour, stinker, black or moldy
Included therein no more than 5% by weight sour or black beans.

 No.3 By Dept. of Agriculture definition,
this grade does not qualify as Kona Coffee.