Style: NecklaceColor: BlackStone: Onyx18 round-cut onyx beads each measure 8 mm - 10 mmFour fancy-cut onyx beads each measure 8 mm wide x 18 mm longSix roundel onyx beads each measure 10 mm wide x 14 mm long20 roundel onyx beads each measure 14 mm - 18 mm wideTotal gemstone weight: 450 caratsMetal: Base metalFinish: High polishClasp: Spring ringMetal weight: 6 gramsNecklace dimensions: 18 mm wide x 29-inches longModel No. OPFN-1049