blue+tourmaline
21Elbaite — Infobox mineral name = Elbaite category = Silicate mineral |thumb imagesize = caption = formula = Na(LiAl)3Al6Si6O18(BO3)3(OH)4 molweight = color = Green, red to pink, blue, orange, yellow, colorless, multicolored habit = Prismatic; striated… …
22colour index — In igneous petrology, the sum of the volume percentages of the coloured, or dark, minerals in the rock. The most common light coloured minerals are feldspars, feldspathoids, and silica or quartz; abundant dark coloured minerals include olivine,… …
23Silicate minerals — ▪ Table Silicate minerals name colour lustre Mohs hardness specific gravity Tectosilicates (three dimensional networks) feldspar (for other examples, see feldspar) orthoclase flesh red, white to pale yellow, red, green vitreous 6–6½ 2.6… …
24brazilian sapphire — noun Usage: usually capitalized B : a transparent blue variety of tourmaline * * * a blue variety of tourmaline used as a gem: not a true sapphire …
25Sapphire — For other uses, see Sapphire (disambiguation). Sapphire The 423 carat (85 g) blue Logan sapphire General Category Oxide mineral …
26List of birds of Colombia — This is a list of the bird species recorded in Colombia. The avifauna of Colombia includes a total of 1895 species, of which 74 are endemic, 2 have been introduced by humans, and 87 are rare or accidental. 1 species listed is extirpated in… …
27List of birds of Ecuador — This is a list of the bird species recorded in Ecuador. The avifauna of Ecuador includes a total of 1663 species, of which 16 are endemic, 2 have been introduced by humans, and 19 are rare or accidental. 77 species are globally threatened.This… …
28Turquoise — For other uses, see Turquoise (disambiguation). Turquoise Turquoise (tumble finished) one inch (25 mm) long. This pebble is greenish and therefore low grade General …
29Diamond — This article is about the mineral. For the gemstone, see Diamond (gemstone). For other uses, including the shape ◊, see Diamond (disambiguation) …
30Sibley-Monroe checklist 5 — The Sibley Monroe checklist was a landmark document in the study of birds. It drew on extensive DNA DNA hybridisation studies to reassess the relationships between modern birds. ApodiformesApodidae* Cypseloides rutilus Chestnut collared Swift *… …
