Insouciant Studios Nautique Ammonite Earrings

Insouciant Studios "Nautique" Earrings featuring gorgeous, highly detailed Ammonite specimens with a long, glamorous strawberry blond antique brass and rose gold plate chain fringe, terminating in drops of petro tourmaline, tundra sapphire, and pink spinel. The earrings are finished with a cluster of natural garnet and mystic quartz. 14k rose gold fill construction and earwires provide beauty and true heirloom quality. These earrings are part of the Natural History Collection

Measurements
Total Length 3 3/4 inches
Width 3/4 inch

Materials

Spinel (MgAl2O4) is a magnesium aluminum oxide mineral, with a hardness of 8 on the Mohs scale. It occurs in a range of colors, from colorless to black, with red, lavender, blue, white and others possible. It has a long history of use as a gemstone. In nature, it is formed by high-temperature metamorphism of carbonates or schists, and is often associated with calcite, dolomite, garnet, corundum, diopside, olivine, and other dense minerals. [Mineralogy, Perkins]

Quartz (SiO2, Silicon Dioxide) is the second most abundant mineral of the Earth's crust. Quartz has a hardness of 7 on the Mohs scale, an occurs in a variety of colors, from colorless to black. Some of the colors have their own gem names:
Purple: Amethyst
Yellow: Citrine
Yellow and Purple: Ametrine
Green: Prasiolite
White: Milk, snow
Brown/gray/black: Smoke
Pink: Rose
Orange/ Red: Carnelian
[Mineralogy, Perkins]

Tourmaline [(Na, Ca)(Fe, Mg, Al, Li)3Al6(BO3)3 Si6)18(OH)4] is a highly variable mineral with a hardness of 7 to 7.5 on the Mohs scale. It occurs in many colors, including black, blue, green, pink, and colorless. The color is often zoned (more than one color in a crystal or gem). It is commonly associated with quartz and potassium feldspar, and is structurally related to beryl, cordierite, and dioptase. It is one of the few common Boron minerals. [Mineralogy, Perkins]