I bought this duvet cover after reading the reviews indicating that the material was not thick. I have a goose down comforter I bought in the 90's with extremely high loft. It is puffy to the tune of around 5 inches high. The last thing I would want to do is put on a heavy duvet cover and flatten out the down clusters. I bought the gold and am very happy with it! The color is classy and perfect. The weave is single ply and tightly woven. It has a beautiful sheen to it. I've not washed it yet, but I will turn inside out before putting in the wash like I do with all my nice shirts, pants, duvet covers, etc. Mine has a seam joint 1/3 inward from each side, lengthwise. It does not look awkward to me. Frankly, I think it adds dimension. I cannot wait to use this when the weather gets cooler. I will buy another in the fall season!
Also, for those of you who shop based on thread count alone, many lower thread count bedding such as 400 tc is actually softer or better quality than much higher thread count. Single ply is what you want for bedding. There is only so much thread that can be crammed into a square inch. When you see 800 or 1000 thread count, it is usually from it being double ply, therefore the material will feel thick like twill in some cases. Sometimes the way it is weaved or twisted, or the threads used is inferior so that the manufacturer can claim 800, 1000 tc, etc. Not all higher tc are bad, but most are not as luxurious you would imagine it to be. Some of the most expensive italian made sheets/duvet covers that cost a few hundred dollars are "only" 300-range thread count!