I've tried this on two different Toons and gotten the same result--went to Summerset, completed the Jewelry Certification quest, logged out and then back in. When I go to the Crafting board and pull off a writ for Jewelry, it asks me to craft 3 pewter rings, but when I craft the first one (and the second), it doesn't update the crafting quest, meaning I can never complete it and I'm just wasting materials. Tried it at the crafting station in Alinor and also in Daggerfall and Vivek City.
One of the main reasons I purchased Summerset was for the jewelry crafting.
Xbox-NA
Guildmaster of Nightmothers Deadly Deals
PVE/PVP Stamblade: Ylandra Silverthorn
PVE Magwarden healer: Raw'zl Dah Zel
PVE DK Tank: Greta Feuerwerk
PVP StamDK: Helga Feuerwerk
PVP Necro Healer: Dratha Helbain
PVE Magcro: Dorian Fey
PVE Magblade: Arivssa Thaoral
PVE Magsorc: Eldara Birchwood