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Front view of Octagon Monarch Opal Cabochon, Sterling Opal, 21x16mm AAA grade
Octagon Monarch Opal Cabochon size comparison with quarter coin, 21x16mm, 9 cts
Front view of Octagon Monarch Opal Cabochon, Sterling Opal, 21x16mm AAA grade
Video showing play-of-color and fire of Octagon Monarch Opal Cabochon from multiple angles
Octagon Monarch Opal Cabochon size comparison with quarter coin, 21x16mm, 9 cts

Monarch Opal Cabochon Gemstone for Pendant Making, Sterling Opal AAA Quality

  • $300.00
  • 1 available
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Stone Name Treated Monarch Opal Cabochon
Stone Color As Seen in Picture
Weight 9 Cts
Size Approx 21x16 mm
Quantity 1 Piece
Shape Octagon Shape
Treatment Lab Created
Back Side Flat
Quality AAA
Gemstone Type Treated
Country USA

Octagon-cut Monarch Opal with a striking geometric silhouette, unlike typical oval cabochons

Rich, multi-tone fire visible across the entire surface — catches light beautifully from every angle

21x16mm size works well as a focal stone for rings, pendants, or statement earrings

Sold under the trade name Sterling Opal, favored by jewelers for its bold, saturated color play

Flat-backed for hassle-free bezel setting or glue-mount applications

Individually inspected piece, shipped directly from our USA workshop

Monarch Opal Cabochon Gemstone for Pendant Making, Sterling Opal AAA Quality

$300.00

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Carefully Inspected

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