Fine Large Rubellite, Nigeria. Estimate US$ 4,500 - 6,500 (€4,000 - 5,700). Photo Bonhams. 

 A fine oval-cut stone distinguished by its deep pinkish red color and excellent proportions. Weighing approximately 28.48 carats and 20.5 x 16.5 x 11.0mm

 Bonhams. LAPIDARY WORKS OF ART, GEMSTONES AND MINERALS INCLUDING GOLD, 19 May 2015 10:00 PDT - LOS ANGELES