30+ years ago, my diamond engagement ring was purchased by LeRoy’s Jewelers in a mall. To be clear, none of us ever had any illusions that it was a quality diamond. In the right light, I can actually see shortcomings. The bridal set was purchased for <$ 1500. I just recently found the receipt and warranty and I'm curious about the stated Diamond Quality that my seller wrote down - it's 35Q - I have no idea what it means and hoped that someone could give me a little more info.You will not break my heart or offend me by informing me that it literally means it is 35th quality, or even an industrial rejection. I just never saw that nomenclature.