Size 5 sterling silver zultanite/diaspore ring with blue stones. Zultanite is a unique mineral because it changes color depending on light source. UV produces a pink/rose, white(fluorescent) makes an apple green, and incandescent a champagne tone. the second picture is an attempt at showing the effect of mixed lights, but does not show how white and natural light look together. I love it, but my current job does not allow me to wear jewelry other than my plain wedding band. Hope it finds a good home with you