Natural Ruby 0.63ct Untreated Cushion Cut

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A cushion-cut natural ruby from Madagascar, 0.63 carats, with a compact 4.5x4mm outline. The near-square cushion silhouette with its softly rounded corners gives this stone a diffe rent character from an oval - the broad face spread distributes color across the wider surface area, and the cushion shape suits both vintage and contemporary settings. As an untreated stone, the color is entirely natural, with the cooler, more subdued red tone typical of unheated Malagasy material. Clarity is I3, with inclusions visible within the stone, consistent with untreated ruby at this price point. Untreated rubies from Madagascar are less common than heat-treated material - most commercial ruby from the island receives heat treatment as standard practice, making unheated stones a deliberate choice for buyers wanting natural, unenhanced color. At 0.63ct and 4.5x4mm, this cushion ruby has a meaningful visual presence and works well as a solo center stone in a small ring or pendant. Natural ruby, loose gemstone, July birthstone. Stone type: Natural Ruby Weight: 0.63ct Size: 4.5x4mm Color: Red Cut: Cushion faceted Clarity: I3 Treatment: Untreated Origin: Madagascar Hardness: 9 Natural Madagascar ruby, untreated cushion cut, July birthstone - sold loose. Show more