I use Amish black. Have never had a problem and it always matches.

I use Amish black from Keepsake Quilting only. for my blacks.. That way it always matches leftover pieces. Have never hd a problem. I do prewash all fabrics.

I think you are mistaken. Robert Kaufman owns the trademark for "KONA" for use on fabric. That means no one else can use that single word for fabric. Someone can use the single word, "KONA" for coffee or software, but not for fabric. To do so is a criminal offense, the same as selling knock off Nike sneakers.

Besides that, their representative called me to tell me that the fabric that I bought at Hobby Lobby was not Kona. (I had previously sent a 3" X3" square to the address listed on their website.) He made a point of telling me they sold to both JoAnn's and Hobby Lobby.

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I went directly to the source and asked RK Fabrics if the kona at JoAnn's is theirs. Their reply: JoAnn receives the same quality Kona that we ship to all our customers.

What I forgot to ask is why it doesn't have their name on it.

The HL's here sell Kaufman Kona and all the bolts are marked. Not so at Joanne's; they just say Kona. As for Kona being just for RK, I understood that they can't stop anyone from using the word Kona to describe a fabric any more than Kleenex can stop someone from asking for a kleenex instead of a tissue, that is not the Kleenex brand. If Joanne's Kona is not by RK, it should be since they charge the same as HL for it.