Recently purchased this spinel from a collector. Has a nice color, tone and saturation, good luster and a good cut. No window. Getting harder to find really nice spinels and price just keeps climbing. Wish I had bought more years ago when price was very low. I missed out on this blue 5.2 ct Luc Yen spinel because I hesitated too much and now I'm kicking myself in the you know where. It was expensive and I didn't think it would go that fast.