Round-cut yellow sapphire at real saturation is a difficult combination — the round brilliant demands the most rough of any shape, so cutters typically favor lighter or included material to avoid losing weight. This one keeps a full, juicy vivid yellow at 1.58 carats, loupe clean, with the round faceting throwing consistent light corner to corner. IGI confirms natural corundum with indications of heating, standard for this color category. Round, vivid, and loupe clean together is a rare combination in yellow sapphire — and it happens to be exactly the cut and tone in highest demand right now.