December Birthstone: Quick Guide for London Blue Topaz jewelry The wearing of this magnificent Birthstone Jewelry is particularly beneficial to those who were born in the month of December and under the sign of Sagittarius. The London blue topaz has a hardness of eight on the Mohs scale, making it durable enough to be worn every day. Read More: https://shorturl.at/fhLZ1 #DecemberBirthstone #LondonBlueTopazJewelry #BirthstoneJewelry #LondonBlueTopazBenefits