Craft went from right to left and stopped then floated and turned to the right and then flew off at about a 45 degree angle slow moving

The craft appeared a dull finish of silver. No windows, front tube shaped went back to a fan tailed flat shape at the back. No vertical tail. There was no noise, The sun was to the right and the sky was full blue. The craft was easily seen and didn't seem to reflect the sun, It was easy to see the shape of it. As it flew off towards the north west I could see that the rear had two darker areas on either side. Didn't see any sign of panels or seams. It was all very smooth. It looked like it was climbing in elevation as it flew off and got far enough away until it disappeared. At first sight it might have been a couple hundred feet off the ground. I'm guessing it to be 75 to 100 ft long.