photoworks Rough_Rock Joined Dec 5, 2012 Messages 18 Aug 3, 2019 #1 Family heirloom...looks like a ruby. Need help with Maker's Mark and C.18 mark. Date mark is F
PreRaphaelite Ideal_Rock Joined Feb 2, 2015 Messages 3,564 Aug 3, 2019 #2 https://www.gold-traders.co.uk/hallmarks/ Looks like synthetic ruby at that size.