Peanut Wood Jasper Jewelry is the birthstone for February, and it is linked to the zodiac of Aquarius. Its ranks 6.5-7 on the Mohs scale of hardness, which is why it’s considerably harder than gemstones like opal. It has a vitreous to greasy lustre and is found in grey, greyish-brown, brown, violet, blue, red, green and yellow colours. It has white streaks.