The 50th state acclaimed for its unique and active geology does not have state mineral though it has a lot of great field trips. The state gemstone is black coral
Born of Fire, Born of the Sea
Over the past 70 million years the continuous movement of the Pacific Plate over the stationary Hawaiian "hot-spot" has left a trail of volcanoes across the Pacific Ocean floor.
Hawai‘i Volcanoes National Park protects some of the most unique geological, biological, and cultural landscapes in the world. Extending from sea level to 13,677 feet, the park encompasses the summits of two of the world's most active volcanoes - Kīlauea and Mauna Loa.
Geologic Features at the National Park: https://www.nps.gov/havo/learn/nature/geological-features.htm
The green sand at Papakolea Beach comes from the mineral olivine found in the basalt of certain lava flows because there is such a high concentration of olivine in this particular lava flow, the result is a stunning green sand beach.
DO NOT REMOVE THE SAND! Resist the temptation to take any of the beautiful green sand as a Big Island souvenir. Not only is the supply limited, but the volcano goddess Pele has been known to wreak havoc upon visitors who remove green or black sand from her beaches! Don't say we didn't warn you.