Insouciant Studios Fruity Earrings Amethyst and Oregon Sunstone

Insouciant Studios "Fruity" earrings handmade from natural amethyst and natural ametrine, lemon yellow quartz, oregon sunstone, petro tourmaline, with quality sterling silver construction and ear wires.

Measurements
Total Length: 2 7/8 inches (7.3 cm)
Total Width: 3/8 inch (9 mm)

Materials

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
[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]