Evoking the timeless styling of days gone by, these Lab Emerald antique style rings connect you to the rich tapestry off all that have come before. The birthstone of May, an emerald ring symbolizes the eternally returning spring. The velvety green color of emerald is a perfect match for spring and summer fashions. The birthstone of May, an emerald ring symbolizes the eternally returning spring. The velvety green color of emerald is a perfect match for spring and summer fashions.