Is it possible? Of course! Never even hinted it wasn't. My comment was in reference to the size of the ego that might be needed to claim it as their invention.
Would it be costly? Most certainly. The amount of meterorite to accomplish this feat alone would come to a small fortune. Then the cost of an extremely skilled pande or empu (if you could find one) would also be extravagant. Meteorite is a VERY difficult material to work with just as pamor, but to create an entire keris from it would require a keris maker of the highest order. Besides, you would only want the best to be working with such high priced material. So who is going to make this keris for you. Not your material scientist.
Would it be any more beautiful than the best of keris made from terrestial metals. I do not see why it would. The elements are the elements, after all. There are no elements in meteorite that do not already exist here on Earth. But i guess that for some the grass is always greemer on the other side of the asteriod.
And you know, you will still need to treat it with arsenic and lime to blacken the iron and raise the pamor just like other keris.
So by all means, acquire the meteorite, find the empu, make your keris, make history! I would, in all sincerity, love to see you do it. I am sure many others would too. As i stated before, have at it boy. We wait with bated breath!