//換成黑寶石
    private void BlackGem(int y, int x)
    {
        Gemstone temp = GetGemstone(y, x);

        temp.name = "BlackGem";
        Debug.Log(temp.name + "  X=" + temp.columnIndex + "|  Y=" + temp.rowIndex);
        temp.gemstoneType = 8;//第9種寶石背景是黑
        temp.GetComponentInChildren <SpriteRenderer>().sprite = Black_sprite;
        Debug.Log("換成黑色寶石~");
    }
    //換成彩虹寶石
    private void RainbowGem(int y, int x)
    {
        Gemstone temp = GetGemstone(y, x);

        temp.name = "RainbowGem";
        Debug.Log(temp.name + "  X=" + temp.columnIndex + "|  Y=" + temp.rowIndex);
        temp.gemstoneType = 7;//第8種寶石背景是虹
        temp.GetComponentInChildren <SpriteRenderer>().sprite = Rainbow_sprite;
        Debug.Log("換彩虹寶石~");
    }