BirthAlmanac
日本語

リストは1つではなく2つ

月別の誕生石

このページのリストはアメリカのものです。1912年にカンザスシティで全米宝石商協会が採択し、その後1952年、2002年、2016年の3回改められました。伝統ではなく業界の基準です。下の表では採択時のリストと現在のリストを示し、違いのある月に印をつけています。

A hand-coloured plate of two rock fragments studded with dark blood-red dodecahedral garnet crystals, one bedded in grey-green schist and one in rusty brown matrix, with two loose crimson crystals and two outline diagrams of the twelve-sided form.Garnet1月A hand-coloured plate of two quartz specimens: above, a crust of small violet amethyst points on a pale cream nodule; below, a larger broken mass crowded with faintly purple, sharply pyramidal quartz crystals over its whole upper surface.Amethyst2月A hand-coloured plate of a large broken beryl crystal, its vertical faces finely striated and shading from sea-green through milky white to buff, with a smaller weathered prism beside it and an outline diagram of the six-sided crystal below.Aquamarine3月A hand-coloured plate of seven diamonds. Five are drawn as fine outline diagrams showing the facet patterns of brilliant, rose and table cuts; two are fully coloured deep blue-black brilliants, one seen face-on and one in profile.Diamond4月A hand-coloured engraving of two emerald specimens: a slender deep-green hexagonal prism lying across a pale grey calcite matrix, and below it a large blocky green crystal seated in white rock speckled with small green grains.Emerald5月A single valve of the pearl oyster shown against a black ground inside an ornamental printed border: the shell is creamy white with concentric growth lines and a notched hinge, and one small round pearl sits attached to the nacre near its right edge.Pearl6月A hand-coloured engraving of nineteen numbered corundum crystals in rows, most of them rose and crimson ruby, barrel-shaped or six-sided; also an orange-brown prism, a pale grey star-stone, and at lower right one large deep blue sapphire crystal.Ruby7月A chromolithograph headed Epidote, Garnet and Olivine. Low on the plate a pale yellow-green olivine crystal with a flat terminated top, and at the right the same stone cut as a vivid grass-green oval, among dark red garnets and green epidote.Peridot8月A hand-coloured plate headed Colored Stones. At top left a deep blue cushion-cut sapphire; at top centre a large rough blue-grey sapphire showing a white six-rayed star; below them ruby, amethyst, yellow and orange stones, pale green cabochons and banded agate slices.Sapphire9月A hand-coloured engraving of a single opal nodule set alone on the page: an irregular water-worn lump whose broken face is milky blue-green and cream with faint yellow patches, edged along the underside by a rough dark brown weathered crust.Opal10月A chromolithograph of topaz: a pale blue crystal seated in buff matrix, a tall deep golden-orange striated prism, a lemon-yellow crystal on a druse of white crystals, a small rose-red prism, and cut stones in pale blue, amber, yellow and pink.Topaz11月A hand-coloured engraving of three turquoise specimens one above another: a pale blue-green crust broken into rounded patches within a dark green rind, a knobbly botryoidal mass, and a flat splintery slab of clear sky-blue turquoise seen edge-on.Turquoise12月
月現在のリスト1912年のリスト
1月GarnetGarnet
2月AmethystAmethyst
3月Aquamarine, Bloodstone（1912年から変更あり）Bloodstone, Aquamarine
4月DiamondDiamond
5月EmeraldEmerald
6月Pearl, Moonstone, Alexandrite（1912年から変更あり）Pearl, Moonstone
7月RubyRuby
8月Peridot, Spinel, Sardonyx（1912年から変更あり）Sardonyx, Peridot
9月SapphireSapphire
10月Opal, TourmalineOpal, Tourmaline
11月Topaz, Citrine（1912年から変更あり）Topaz
12月Turquoise, Zircon, Tanzanite（1912年から変更あり）Turquoise, Lapis lazuli

12か月のうち5か月は1912年から変わっており、上に印をつけています。1912年のリストは G. F. Kunz『The Curious Lore of Precious Stones』（1913年）に、現在のリストは GIA によります。 これらのリンク先の詳細ページは英語です。