Robinson's Jewelers Blog / asterism

Discover the latest trends, tips, and insights in the world of fine jewelry with Robinson's Jewelers' official blog. Dive deep into the mesmerizing realm of precious metals and gemstones. Whether you're a jewelry aficionado or seeking styling advice, our curated articles are here to enlighten and inspire.

Close-up of a stunning star sapphire cabochon ring displaying a sharp, six-rayed asterism effect on a dark blue background.

What Causes the Phenomenon of "Asterism" (the Star Effect) in Star Sapphires and Rubies? A Celestial Mystery in Your Jewelry Box!

Maya Thompson Posted on January 22 2026
Picture this: you’re admiring a sapphire ring, and as you tilt it in the light, a silky...
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Close-up of a stunning star sapphire and star ruby ring, showcasing the sharp, silvery asterism star effect against a deep blue and red gemstone background.

Star Sapphires and Rubies: The Science of Asterism and What to Look For (The Galaxy on Your Finger)

Maya Thompson Posted on December 02 2025
Okay, let's talk about magic. Real, honest-to-goodness, wear-it-on-your-hand magic. We'...
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Close up collection of phenomenal gemstones exhibiting asterism, chatoyancy, color change, and aventurescence effects

Phenomenal Gems: A Guide to Stones with Special Optical Effects (Asterism, Chatoyancy, Color Change, Aventurescence) That Will Make You Do a Double Take

Maya Thompson Posted on September 11 2025
Ever looked at a gemstone and thought it was playing tricks on you? Welcome to the wond...
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