Beautiful natural color change Fluorite(1ct,VS,Brazil) hand set with natural white Zircon(1ctw,VS,Cambodia) and accented with Boho flowers all in solid 925 sterling silver. What color is it? Is it blue? Is it purple? Get ready for a spirited debate with this color-change fluorite bracelet.  Through day and night, shade and light, the shift in color seems almost magical. But it's not magic. It's just gemology. And that means it can be both colors. Mark this mystery down as "beautifully solved." The color shifts between blue in sunlight and purple in incandescent light.