What are sun spangles in amber?

Sun spangles in amber refer to inclusions that occur naturally within the resin, resulting from the presence of microscopic gas bubbles. These tiny bubbles can create a shimmering effect that resembles sunlit sparkles when light passes through the amber. This natural phenomenon contributes to the unique aesthetics of amber, particularly because the presence of these inclusions can enhance its visual appeal and value.

While the heating and oiling process does create certain surface characteristics, sun spangles specifically originate from natural inclusions and are not a result of treatments done to the amber. Therefore, understanding the formation of these inclusions is fundamental to appreciating the beauty and complexity of amber as a gemstone.