Most gemstones reflect light. Fine ruby also generates it: chromium causes the stone to fluoresce under ultraviolet and natural daylight, producing an internal red glow that adds to the color visible from reflected light alone.
A Storied Heritage
The emeralds from Egypt's Eastern Desert mines (the oldest commercial source, active by 330 BCE) are included and relatively pale compared to Colombian material, the difference in quality between ancient and modern sources measurable in color saturation and clarity under examination.
Origin Story
Ceylon sapphire provenance gives a fine stone a specific context worth communicating: Sri Lanka's deposits are recognized for their characteristic bright to cornflower blue, and the origin carries centuries of respected trade history that adds depth to the gift beyond what the stone alone conveys.