They are highly valued across the world for their magnificent and ethereal bluish sheen, which not only gives the wearer a majestic appearance and attractiveness but also serves to remind everyone of the calm and serenity that the color implies. Regardless of the market’s demand and supply, Opal and Tourmaline both express beauty and elegance in distinctive ways. It can be challenging to decide between opal and tourmaline, much like it was to decide between moonstone and amethyst, which we had just discussed.