ISO 22764:2020—Jewelry And Precious Metals
During the formation of Earth, molten iron sank to its center to make the core, which took with it the vast majority of the planet’s…
ASTM F2999-19: Adult Jewelry
The earliest known jewelry is dated 142,000-150,000 years ago. It is a necklace made from half-inch-long sea snail shells found in a cave in Bizmoune…
ASTM F2923-20: Children’s Jewelry
Since ancient times, gifting children with jewelry has been a globally practiced custom, as it is believed these gifts guarded children against evil spirits, bad…