public static function silverRatio(): Decimal
    {
        if (null === self::$SilverRatio) {
            self::$SilverRatio = Decimal::fromString(
                "2.41421356237309504880168872420970"
            );
        }
        return self::$SilverRatio;
    }
public static function silverRatio(): Decimal
    {
        if (null === self::$SilverRatio) {
            self::$SilverRatio = Decimal::fromString(
                "2.41421356237309504880168872420970"
            );
        }
        return self::$SilverRatio;
    }
public static function silverRatio ( ) : Decimal { if ( null === self :: $ SilverRatio ) { self :: $ SilverRatio = Decimal :: fromString ( "2.41421356237309504880168872420970" ) ; } return self :: $ SilverRatio ; }
Returns the Silver Ratio.
@return Decimal
Returns the Silver Ratio .