Now that I think about it I am sure I have seen Carolyn post that it can be caused by environment, but I just find it curious since an identical plant 10 feet away has none at all. If there is any difference at all, the one without the pointed ends might get a little less sun.

Yes, I know that high sustained heat can alter fruit shape but usually that means just an enlarged nipple at the blossom end, not a true heart shape.

And yes, seeds were sent to me, actually three different packets from someone who found what he called a possible Orange Minsk Heart.

it came from a plant that had the regular beefsteak shaped ones and some that were heart shaped.

Tania's link is below at the bottom.

Tania says that Andrey told her that the original variety was a blunt heart, but I never saw his post about that and what I got when it was grown out origially by Freda for me here at home, seeds from Andrey, was not a heart.

Then there's Prue, which I love, which has fruits of all different shapes on a plant at the same time, saved seeds give the same and it's always been that way,

http://t.tatianastomatobase.com/wiki/Prue

Years ago I grew Azoychka several years in a row for seed production and I never saw anything resembling a heart.

I recall one person who said that fruit shape could be different if there were alternating temps that were high, then much cooler, which could alter the shape of the fruit due to different rates of growth of fruits,

As I said, a very difficult question to answer and my opinion is, what is, is.

Carolyn

This is the heart fruit with a "normal" Azoychka in the middle from the same seed packet.

I just find this interesting. :)

Although unlikely, even if it were a true Azoychka Heart, it wouldn't exactly create a big stir, lol. I had not even heard of it before this year, and it certainly does not seem to be a sought after variety. I do find it suits my needs though, being early, prolific, and pretty good size and taste for an early variety.

Like Carolyn said, a difficult question to answer.

I've had many beefsteak varieties produce fairly blunt heart shaped fruit. In all instances, the hearts have very small blossom scars compared to the beefsteaks on the same plant. Also, the hearts were almost always considerably smaller in size (~ 4 to 10 oz.) than the beefsteaks (~ 1 lb or more). Later grow-outs of saved seed produce normal beefsteak plants, plants with mixes of beefsteaks and blunt hearts like the previous plant, and rarely, plants with longer tapered hearts than the previous plant. I've only experimented with PL varieties of these possible heart shaped tomatoes.
Your hearts look to be the same size as the normal tomatoes, which is much different from what I've seen.

Gary