Crystal Bublé

Crystal is the debut album by Japanese sister duo Double, released on June 2, 1999 by For Life Music Entertainment. The first press edition of the album came with the CD case with a clear background, and a back insert with the duo posing with the track names on the left side. Inside the case comes with a photobook with different pages consisting of red, orange, yellow, green, blue, and pink spelling Double letter by letter. The RIAJ has certified it 2× platinum, recognizing over 600,000+ shipments throughout Japan. On the Oricon charts, the album's peak position was number two.

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