A [B] C [D] [E] F G H I J [K] L [M] N O [P] Q R [S] T [U] V [W] X Y [Z]
A actinolite: [26] agate: [20], [28], [38] agatized wood: [27] allanite: [21] almandite: [22] amazonite: [23] amazon stone: [23] amber: [18] amethyst: [25] Amethyst Hill: [25] amorphous gemstones: [9] andalusite: [30] Arkansas: [19] Armstrong County: [21] augite: [18], [28]
B Baringer Hill, Llano County: [21], [26] baroque pearls and/or stones: [17], [25] bediasite (tektite): [28]-29, [39] beryl: [18] Big Bend National Park: [27] biotite: [23] Blanco County: [18], [22] Brazos County: [29] Brazos River: [25] Brewster County: [18], [23], [24], [25], [26], [27], [28], [31], [36] brilliancy: [5] brilliant cut, standard American: [13], [15], [16] Brown County: [19] Burleson County: [29] Burnet County: [20], [22], [23], [25], [26], [30], [37]
C cabochon gems: [10]-12 Caddo Lake: [25] carbuncle: [22] carnelian: [27] cassiterite: [23], [29] celestite: [19], [35] chalcedony: [27] geodes: [26] chuck: [15], [17] citrine: [25]-26 cleavage: [6], [13] coal: [22] Coke County: [19] color: [5] Colorado River: [25] Concho River: [25] crown girdle facets: [16], [17] crown of gemstone: [15], [16] crystals: [7]-9 crystal systems: [7] crytolite: [21] Culberson County: [22], [23], [25], [26], [31] culet: [13] cutting and polishing: [10]-17 cutting lap: [13]
D DeWitt County: [29] diamond: [19] saw: [10], [11] diaphaneity: [5] dispersion: [6] dopping: [12], [13] dop-stick: [12], [15], [17] dop-wax: [12], [15], [17] dravite: [30] durability: [6] Duval County: [21], [24]
E El Paso County: [22], [30], [31] emerald cut: [15] epidote: [19]-20
F facet, kinds of: [13] main: [16] skill: [16] table: [13], [14] faceted gems and/or stones: [10], [13]-17 Fayette County: [20], [29] fergusonite: [21] fire: [5] Fisher County: [19] fluorite: [20], [21] Foard County: [19] fossil wood: [20]-21, [22] fracture: [6] Franklin Mountains: [18]
G gadolinite: [21]-22 garnet: [20], [22], [36] gemstones, by kinds: [18]-31 geodes, celestite: [19] Georgia: [29] Gillespie County: [18], [22], [23], [25], [26], [30], [36] girdle facets: [16] gneiss: [22] Gonzales County: [20], [29] grain: [25] gram: [7] graphite: [30] Grimes County: [29] grinding: [12] Guadalupe River: [25] Gulf Coast: [25] Gulf Coastal Plain: [18], [20], [22], [35]
H hardness: [6] Hudspeth County: [18], [20], [22], [24], [25], [26], [27], [28], [31]
I index of refraction: [5]