* Symmetrical: Tiferet Yisrael (Yachin Sukkah 3:6) writes that ideally, the pitom should be lined up with the oketz. [[Kashrut]] Arbaat Haminim (p. 8) agrees. Arbaat Haminim Lamehadrin (p. 177) cites Rav Nissim Karelitz, who says that this criterion is met if the pitom and oketz are approximately lined up.
* Aesthetic beauty: Chazon Ovadia (p. 278) quotes the Maamar Mordechai, who asserts that besides for the properties that Chazal specified, the beauty of an etrog depends on the subjective view of the individual. Accordingly, Rabbi Mordechai Willig (quoted by Rabbi Eliakim Koenigsberg [http://www.yutorah.org/lectures/lecture.cfm/782108/Rabbi_Eliakim_Koenigsberg/A_Practical_Guide_to_Purchasing_Daled_Minim “A Practical Guide to Purchasing Daled Minim”] min. 44-6) would ask his wife to pick the nicest-looking etrog from amongst the valid etrogim.</ref>
# A grafted Etrog is pasul whether it was grafted with lemon, promerance, or any other fruit. <Ref>The overwhelming consensus of Achronim hold that a grafted Etrog is unfit all days of [[Sukkot]] and one may not make a Bracha on it. These Achronim include Magen Avraham 648:23, Taz 648:3, S”A HaRav 648:31, Mishna Brurah 648:65, Chazon Ovadyah [[Sukkot]] (pg 223).</ref>