Indicolite Tourmaline - Mineral eye disease Its interlocking crystal structure gives

Its interlocking crystal structure gives it exceptional toughness—making it one of the most durable natural materials known

Description: This fossil sea urchin comes from the Upper Cretaceous deposits of the Höver Quarry near Hannover

but it was manufactured in China

almost architectural quality

while corundum of any other color is classified as sapphire

Indicolite Tourmaline - Mineral eye disease Its interlocking crystal structure givesMined from: Paprok Mine, Kamdesh District, Nuristan, Afghanistan Description: This stunning Indicolite Tourmaline specimen from Afghanistan showcases the rare and coveted deep blue hues that define this exceptional variety of tourmaline. Indicolitederived from the Latin indicum, meaning "indigo"is prized for its vibrant saturation and transparency, ranging from electric sky blue to intense midnight tones. Formed deep within pegmatitic veins, these