There are many different colors of gemstones, but the two most popular colors in the world are blue and purple. In FFXIV, there is a great opportunity to farm these two colors of gemstones. The best way to farm blue and purple gemstones is to use the blacksmithing skill. The blacksmithing skill allows you to create items that have the color of the gemstone on them. This will allow you to get a lot of blue and purple gems for your money. The best way to farm red and green gems is by using the smelter skill. The smelter skill allows you to create items that have the color of the gemstone on them. This will allow you to get a lot of red and green gems for your money.