Beautiful! I love the contrast of the white triangles against the scrappy strips in your quilt.
In fact, I am in the midst of ordering some blue fabrics to make another Pineapple Blossom quilt for my own bed. I'm ordering about 12 blue fabrics and a white/red print for the triangles so I can finish it quickly. And for this one I will use Bonnie's suggestion of sashing with cornerstones. I found an image online where the sashing is another contrasting color such as black and it adds another dimension to the design.
The first Pineapple Blossom quilt I started isn't even finished--- I wanted to use many different browns and cream prints, so I buy some fabrics every year or so and add a few more blocks to the stack. One day it'll be finished.