透明感のある青ガラスで作られた半球状のトンボ玉で、美しい銀化も見られます、また光を通しての透明感もあります、細い穴があり金属製の金具が付いていますが、これは後世のものかもしれません。半球状なのでゲームピースの可能性もあります。どちらにしても珍しい形状の美しい玉です。送料当方負担のレターパックライトにてお送りします。

File:Blue Glass Bead of Unknown Date (FindID 561972).jpg - Wikimedia Commons

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L 14 cm hi-res stock photography and images - Alamy

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String of 12 Eye Beads | Late Period–Ptolemaic Period | The Metropolitan Museum of Art

Size 11/0 or 12/0 Vintage Venetian Seed Beads in Opaque White Blue Stripes. 10 Grams of Collectible Old Italian Glass Beads. - Etsy

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