After you buy Rosethorn Hall in Skingard go to your room which is at the very top. Do you see where the deer head is hanging? Jump on to some of the cabnits and reach the part where the deer head is hanging. You should see a scroll read it and go down to the slave quarters. Look at the support beams and one of them should have an hourglass in them. Search the hourglass and you will get 2 flawless sapphires, rubies, and emeralds