Q gemstones
![Welsh Blue cabochon](https://sites.create-cdn.net/siteimages/66/1/9/661939/20/2/3/20234813/1489x1678.jpg?1667160837)
Quartz with gold
Natural gemstone.
R gemstones
![Rhyolite with blue quartz and pink feldspar](https://sites.create-cdn.net/siteimages/66/1/9/661939/20/2/3/20234820/1029x1029.jpg?1667160894)
Rhyolite with blue quartz & pink feldspar
Natural gemstone.
![Ruby in fuchsite](https://sites.create-cdn.net/siteimages/66/1/9/661939/20/2/3/20234823/1145x1145.jpg?1667160940)
Ruby in fuchsite
Natural gemstone.
![Ruby in kyanite](https://sites.create-cdn.net/siteimages/66/1/9/661939/20/2/3/20234827/1304x1304.jpg?1667161006)
Ruby in kyanite
Natural gemstone.
![Ruby in zoisite](https://sites.create-cdn.net/siteimages/66/1/9/661939/20/2/3/20234830/1943x1943.jpg?1667161062)
Ruby in zoisite
Natural gemstone.
![Rutilated quartz with rutiles in star formation](https://sites.create-cdn.net/siteimages/66/1/9/661939/20/1/8/20189391/1035x959.jpg?1664996796)
Rutilated quartz with hematite
Natural gemstone.
S gemstones
![](https://sites.create-cdn.net/siteimages/66/1/9/661939/20/2/3/20234833/1185x1185.jpg?1667161197)
Schalenblende
Natural gemstone.
![Scapolite](https://sites.create-cdn.net/siteimages/66/1/9/661939/20/2/3/20234835/729x729.jpg?1667161254)
Scapolite
Natural gemstone.
![Septarian cabochon](https://sites.create-cdn.net/siteimages/66/1/9/661939/20/2/3/20234837/1224x1224.jpg?1667161302)
Septarian
Natural gemstone.
![Seraphinite](https://sites.create-cdn.net/siteimages/66/1/9/661939/20/2/3/20234839/898x898.jpg?1667161355)
Seraphinite
Natural gemstone.
![Sillimanite](https://sites.create-cdn.net/siteimages/66/1/9/661939/20/2/3/20234840/892x892.jpg?1667161381)
Sillimanite
Natural gemstone.
![Spessartine garnet](https://sites.create-cdn.net/siteimages/66/1/9/661939/20/2/3/20234842/1087x815.jpg?1667161460)
Spessartine garnet
Natural gemstone.
![Sphene](https://sites.create-cdn.net/siteimages/66/1/9/661939/20/2/3/20234843/780x585.jpg?1667161484)
Sphene
Natural gemstone.
![Spodumene](https://sites.create-cdn.net/siteimages/66/1/9/661939/20/2/3/20234844/709x709.jpg?1667161537)
Spodumene
Natural gemstone.
![Surfite cabochon](https://sites.create-cdn.net/siteimages/66/1/9/661939/20/1/9/20195607/1654x1654.jpg?1665325545)
Surfite
is a manmade gemstone cut from layers of hardened resin which have built up in the process of making surfboards
T gemstones
![Thulite cabochon](https://sites.create-cdn.net/siteimages/66/1/9/661939/20/2/3/20234847/981x981.jpg?1667161713)
Thulite
Natural gemstone.
![Tiffany stone or Bertrandite](https://sites.create-cdn.net/siteimages/66/1/9/661939/20/2/3/20234848/1145x1145.jpg?1667161758)
Tiffany stone
Natural gemstone.
![Tiger iron](https://sites.create-cdn.net/siteimages/66/1/9/661939/20/2/3/20234849/1867x1867.jpg?1667161816)
Tiger iron
Natural gemstone.
![Trapiche emerald](https://sites.create-cdn.net/siteimages/66/1/9/661939/20/2/3/20234851/900x900.jpg?1667161920)
Trapiche emerald
Natural gemstone.
![Tsavorite garnet](https://sites.create-cdn.net/siteimages/66/1/9/661939/20/2/3/20234852/1071x803.jpg?1667161944)
Tsavorite garnet
Natural gemstone.
U, V & W gemstones
![Variscite](https://sites.create-cdn.net/siteimages/66/1/9/661939/20/2/3/20234857/1200x900.jpg?1667162019)
Variscite
Natural gemstone.
![Welsh Blue cabochon](https://sites.create-cdn.net/siteimages/66/1/9/661939/20/1/9/20194538/1233x1280.jpg?1665244050)
Welsh Blue
Manmade - a by-product of the iron smelting process in Wales.