April Birthstone
April holds the most famous gem on Earth: diamond — crystallized pure carbon, the hardest natural material known, forged a hundred-plus kilometers down in the mantle and rocketed to the surface in ancient volcanic pipes. No other birthstone carries the same weight of symbolism, marketing and myth, which makes April both the most enviable month and the one where honest information matters most.
This page keeps it factual: what a diamond actually is, what 'April's color' means for a stone defined by colorlessness, how the 4Cs really drive price, where lab-grown diamonds honestly fit (they are real diamonds — and they have permanently changed the market), and the history that made a transparent rock the emblem of permanence.
The April birthstone
What color is the April birthstone?
April's birthstone 'color' is colorless — the icy white sparkle of a fine diamond is what charts and birthstone jewelry use for the month. On the grading scale that means the D–F range; most jewelry diamonds sit a few grades lower, faintly warm in tone but still reading white once set.
Fancy-color diamonds widen April dramatically — canary yellows, browns ('champagne'), and the ultra-rare pinks and blues that set auction records. Any of them is a genuine April diamond; the chart simply shows white.
How April got its birthstone
The name comes from Greek adamas — 'unconquerable' — and for most of history diamonds were exactly that: unfacetable, worn rough as talismans of invincibility by kings and warriors, with India as the world's only source (Golconda's mines produced the Koh-i-Noor and Hope). Cutting techniques developed from the 15th century unlocked the stone's fire, and Brazil (1720s) then South Africa (1867) successively rewrote supply.
Two modern forces shaped what April means today: the 20th-century marketing that fused diamonds to engagement ('A Diamond Is Forever,' 1947) — arguably the most successful advertising campaign ever run — and the 21st-century rise of gem-quality lab-grown diamonds, which pushed prices of small natural stones down and made disclosure the industry's central honesty question. Diamond has held April on every list, traditional and modern.
Choosing & caring for April birthstones
The 4Cs in practical order: Cut matters most (a well-cut stone outsparkles a bigger, better-graded but poorly cut one — prioritize Excellent/Ideal cut grades); Color and Clarity are diminishing returns (G–H color and eye-clean SI clarity look identical to far pricier grades once mounted); Carat drives price non-linearly (just-under weights like 0.9 ct cost markedly less than 1.0 ct). Insist on certificates from serious labs for natural stones. Lab-grown: real diamonds at a fraction of the price and falling — an honest, excellent choice as long as it's disclosed and priced as lab-grown; the trap is paying natural prices for undisclosed lab stones, which certificates prevent. Simulants (cubic zirconia, moissanite) are different materials entirely — moissanite's rainbow-heavy fire gives it away.
Frequently asked questions
What is the April birthstone?
Diamond — on both the traditional and modern lists. Crystallized pure carbon, the hardest natural material known, and the only birthstone defined by its lack of color rather than a color.
What color is the April birthstone?
Colorless — the white sparkle of a fine diamond is April's chart representation. Fancy-color diamonds (yellow, champagne, pink, blue) are equally genuine April stones at the rare end of the market.
Are lab-grown diamonds real diamonds?
Yes — chemically, physically and optically they are diamond, distinguishable from mined stones only with specialist lab equipment. They cost a fraction of natural prices and keep falling, which makes them a legitimate choice with one non-negotiable: they must be disclosed and priced as lab-grown. Certificates state origin plainly.
Why are diamonds so expensive if they aren't rare?
Gem-quality natural diamonds in larger sizes ARE genuinely scarce — but small diamonds are not, and their price historically rested on controlled supply and unmatched marketing. Lab-grown competition has been repricing that lower end honestly for a decade. Big, fine, certified natural stones — and fancy pinks and blues above all — remain scarce and hold their prices.
How can I tell a diamond from cubic zirconia or moissanite?
CZ is heavier for its size, wears its facet edges dull over time, and fogs longer when breathed on (diamond disperses heat instantly). Moissanite is the harder test — nearly diamond-hard — but its double refraction makes back facets look doubled under a loupe, and its fire flashes noticeably more rainbow color. A jeweler's thermal/electric tester settles it in seconds; certificates settle it permanently.
See the full birthstones-by-month chart or jump to August, December, February, January, July, June, March, May, November, October, September.
Last updated 2026-07-19