An intriguing cabochon of Rainbow Moonstone, from India. Cut from hard-to-find rough, Romans named it so because they thought it was made of moonlight. It's actually orthoclase, like its closest relative, labradorite.
Watermelon tourmaline. Tourmaline is a crystal boron silicate mineral compounded with elements such as aluminium, iron, magnesium, sodium, lithium, or potassium. Tourmaline is classified as a semi-precious stone and the gemstone comes in a wide variety of colors. The name comes from the Sinhalese word "Thuramali" or "Thoramalli", derived from different gemstones found in Sri Lanka. [Wikipedia]