Over 9mm, rubies become showstopping gems with bold presence. Their substantial facets radiate vivid red flashes. Table sizes exceeding 6mm wide project lots of spread and finger coverage. Many 9mm+ rubies are AAA grade for exceptional clarity and color. Large rubies like these make ideal center stones for substantial rings, pendants, and earrings. Statement cocktail rings often incorporate emeralds and sapphires over 10mm for dramatic impact. On men’s accessories, these generously sized rubies make a bold impression. For those seeking commanding red gems, 9-12mm rubies fit the bill.