FREE Brilliant Earth Ring Sizer Posted On February 24, 2020 Get a FREE Brilliant Earth Ring Sizer! Click the request button and fill out the form.You can also request a FREE Tungsten Rings Ring Sizer here!We are happy to send you a complimentary plastic ring sizer so that you can easily measure your ring size at home. Plastic ring sizers shipped to the US and Canada will arrive within five to seven business days and delivery time to the UK and Australia may take longer.