David totally understood placing the ring between them and didn't miss a beat in snatching it up, looking the ring over carefully and meeting the question with little more than a cheeky grin at first. Of course, it was soon followed up by, "Why tell when I can show?" There would be some words, obviously, but first there was a little showing that needed to be done -- ring in hand, held up where Syd could see -- so he took care of that first.
Focusing on the ring where it met the disk, David twisted just a little, the disk separating from the ring portion entirely. The disk was let go of, and while it continued floating where it was left (as if gravity had no effect), the leftover ring was molded a little, resized (a little smaller), and the material on top, the design, changed as well. A dark line appeared, still flat and smooth to the touch -- no agitation, nothing to catch on -- also wood, so it should feel just as nice.
But, in addition, another little extra something was formed with the leftover matter that came from the resize: something with a bit of shimmer without being overbearing. Crushed pearl -- something formed just as naturally as the wood itself.
Once done, the pale wooden band was turned over, the disk taken away with his free hand. The light that came in from the blanket held open by a never-used hair clip caught the bit of pearl just right, showing off the calm glimmer. Proud of the work, David set it down gently between them (an understood space, a respected and safe one) as he said, just as gently, almost shyly: "My idea for the rest of the day," eyes back on her own, still infinitely glad to see her in this moment, "is to... ask you to marry me."
He gave himself no time to overthink it, to worry about it. He knew he'd been wanting this, knew he'd been plotting it for a while. And with the right material, the right place where it was just the two of them... after a day that was a little intense, sure, but felt right because it was so very much their lives... it was time.