Moonstone vs Swiss Blue Topaz: Which Gem Should You Pick? Those looking for a vibrant assortment in their collection of gemstones will find it attractive because of its clearness and brightness. With regards to picking between Moonstone vs Swiss Blue Topaz which is best, the choice comes down to individual inclination and the importance that every gemstone holds for the person. Swiss Blue Topaz oozes a feeling of smoothness and lucidity, while Moonstone emanates sparkle and feminine energy, each having its own interesting appeal. Whether enhancing a piece of Swiss Blue Topaz jewelry or moonstone jewelry, one thing is sure: the two gemstones have the ability to enchant and persuade, by adding a hint of eminence to any jewelry collection.