Hi all, I have minimal expertise when it comes to colored stones. Hue, saturation, window,... are still a work in progress for me. I see that many on this board have stones and pieces designed/fabricated by CVB (I do also but with diamonds). Can the experts here give me an opinion about what makes the stone in this listing worth the auction price? https://loupetroop.com/listings/loo...6ct-8-dot-6x7-dot-28mm-unheated-blue-sapphire To my very uneducated eye I think I see a large window. How does that effect the price? She mentions "top notch faceting", is that the area around the center? Is the shape really unique? Is the color special? Does the nonheat treatment make it that much more valuable? TIA