Medium Tumblestone approx 2-3cm in size, The size, colour and shape your receive may differ slightly from the image shown.
 
Carnelian is a great crystal for cleansing other crystals.  Simply place it in a bag with all your other tumblestones and you will never need to cleanse them by any other method. Carnelian is also a great grounding crystal.  it stabilises and yet still has a high vibration and energy which is great for restoring motivation and creativity. 
Healing properties of this crystal include stimulating the metabolism - great for weight loss, and increasing fertility.