In ancient times Bedouins believed that opals contained lightning and fell from the sky during thunderstorms. Opals have been compared to galaxies, rainbows, and volcanoes. A vast diversity of legends and myths surrounds opals and their origins. Indeed, opal is a mysterious stone. While looking at its kaleidoscope of colors it is easy to imagine […]
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Is Your Vintage Jewelry Really Vintage?
Vintage jewelry is becoming increasingly popular. Actually, it is so popular that some buyers are ready to pay more (sometimes even substantially more) for a piece of vintage jewelry than for a similar piece of contemporary jewelry. This may seem somewhat illogical, taking into account the fact that contemporary jewelry is new and unworn, whereas […]
Catawiki: Proudly Selling You Jewelry with Fake Emeralds
Catawiki is an expert-curated online auction house. Every lot offered for sale is reviewed by an expert, which means it should be safe to buy there. But is it? Research shows that jewelry with fake gemstones is being sold on this auction website continuously. So, a question arises – are Catawiki experts no experts at […]
Cadmium in Jewelry: A Threat to Your Health
What is Cadmium? Cadmium is bluish-white, soft metal. Although it is a natural element in the Earth’s crust, its concentration is extremely low. According to Wikipedia, “the average concentration of cadmium in Earth’s crust is between 0.1 and 0.5 parts per million (ppm)”. Usually, cadmium is not present in the environment as a pure metal. […]