Remove the crown and stem from the pineapple, cut the pineapple in quarters and cut away the core. Remove the skin, then dice fresh pineapple into tidbit sizes.
Quarter tomatoes and scoop out seeds. Cut tomatoes into cubes the same size as the pineapples.
Remove the stem from the jalapeño and remove the seeds. Cut into small pieces. Dice green onions, mince garlic and quickly chop cilantro leaves.
Add diced pineapples, tomatoes, jalapeños, green onions, garlic and cilantro leaves to a bowl. Season with olive oil, cumin, coriander and salt. Stir to mix and enjoy!