This is a 2012 $3 Birthstone Collection pure silver coin from the Royal Canadian Mint.
Specifically, this coin features a Blue Zircon Swarovski crystal, which represents the month of December. While some sources associate a blue gem in this series with September's Sapphire, the specific bright blue zircon shown here is frequently identified as the December release.
The reverse side features an elegant floral pattern by artist Maurice Gervais (indicated by the "MG" initials), while the obverse features the effigy of Queen Elizabeth II.
