2027 Forecast

April · Colorless

April birthstone: Diamond

The birthstone for April is Diamond. The modern and traditional lists agree here; they part company on only 2 of the 12 months.

1912 jewelers’ list
Diamond Kansas City, as Kunz records it
Older lists
Sapphire · 7 of 8 Kunz’s tally of 8 old lists
April births
7.98% #11 of 12 months, US 2000–2014

Kunz 1913; US births 2000–2014.

The months either side, and the same month in flowers: March birthstone, May birthstone and April birth flower.

All twelve months, modern and traditional lists in one table: birthstones by month.

April Birthstone: Diamond — Meaning, Color and Flower
Modern birthstone Diamond
Traditional birthstone Diamond
Color Colorless
Birth flower Daisy and Sweet Pea
Zodiac signs Aries, Taurus
Hardness (Mohs) 10

Diamond is a late arrival in April: of the eight older lists George Kunz compared in 1913, seven gave the month to sapphire and only two to diamond. The American jewelers’ list of 1912 settled on diamond, and De Beers advertising from 1938 tied it to engagement.

April stones in detail

Diamond

Composition Pure carbon (C) in cubic crystal structure
Hardness · Crystal system 10 · Cubic
Mined in Botswana, Russia, Canada, South Africa, Australia

The hardest natural substance — but hardness is not toughness. A diamond will scratch anything, and still cleave if struck along its grain.

Traditionally associated with clarity, permanence and commitment.

Care. Soapy water and a soft brush — diamond attracts grease and loses sparkle fast. Safe in ultrasonic.

Spotting a fake. The fog test is the quick one: breathe on it. Diamond clears almost instantly while cubic zirconia stays fogged a second longer; moissanite clears nearly as fast as diamond, so the fog test alone will not catch it. Moissanite also shows doubled facet edges under magnification.

How Diamond became the April birthstone

Diamond comes from the Greek adamas, "unconquerable". For most of history diamonds came from India alone, until deposits were found in Brazil in the 1720s and then in South Africa after the Kimberley finds of the 1860s and 1870s. The earliest well-documented diamond engagement ring was given by Archduke Maximilian of Austria to Mary of Burgundy in 1477.

Choosing an April stone

Diamond is the most expensive birthstone to buy well, and the price climbs steeply with carat weight, color and clarity. Two choices make it far more affordable: a lab-grown diamond, which is the same material at a fraction of the price, and a shape other than round, which wastes less of the rough crystal. White sapphire is the classic natural stand-in. Nothing natural is harder, so diamond suits any setting and everyday wear.

Primary source

April in George Kunz’s Curious Lore of Precious Stones (1913)

The verse for April
“She who from April dates her years Diamonds should wear, lest bitter tears For vain repentance flow. This stone Emblem of innocence is known.”
George Frederick Kunz, The Curious Lore of Precious Stones (Philadelphia and London: J. B. Lippincott, 1913), chapter IX, “Birth-Stones” — read the original text. Kunz’s traditional stone for April is diamond or sapphire, and the jewelers’ list adopted in Kansas City in 1912 gives diamond. In his tally of eight older lists, April went to sapphire in 7 of them, diamond in 2 — some lists give a month two stones. Which lists Kunz compared, and where the verses come from →

April birth flowers

Daisy

Traditionally signifies innocence and loyal love.

Sweet Pea

Traditionally signifies blissful pleasure and goodbyes.

More on April birth flowers →

If you go by zodiac sign instead

April spans two signs — Aries and Taurus — and the zodiac stone list does not match the monthly one. Which applies to you depends on the day, not just the month.

Aries stones · Taurus stones

Questions about the April birthstone

What is the birthstone for April?

The modern April birthstone is Diamond.

What color is the April birthstone?

Colorless.

What is the April birth flower?

Daisy and Sweet Pea; the daisy traditionally signifies innocence and loyal love.

Is Diamond hard enough to wear every day?

Diamond rates 10 on the Mohs scale. It suits a ring worn daily; the thing to watch is a sharp blow along its cleavage, and grease, which kills the sparkle.

What zodiac signs fall in April?

Aries and Taurus.

Other months

January February March May June July August September October November December

Measured against our reference of 43 stones

The April stones, by hardness

Diamond · modern and traditional Mohs 10 · +3.65 vs average · everyday ring
Clear Quartz · alternative Mohs 7 · +0.65 vs average · everyday ring
Average across all 43 stones Mohs 6.35
Modern and traditional the same stone
April birthstones on the Mohs hardness scale
April birthstones on the Mohs hardness scaleMohs scale from talc (1) to diamond (10) with the April birthstones marked: Diamond 10.Diamond: Mohs 10Diamond 10Garnet: Mohs 6.5–7.5Amethyst: Mohs 7Citrine: Mohs 7Rose Quartz: Mohs 7Clear Quartz: Mohs 7Smoky Quartz: Mohs 7Aquamarine: Mohs 7.5–8Emerald: Mohs 7.5–8Bloodstone: Mohs 6.5–7Peridot: Mohs 6.5–7Sardonyx: Mohs 6.5–7Zircon: Mohs 6–7.5Carnelian: Mohs 6.5–7Onyx: Mohs 6.5–7Agate: Mohs 6.5–7Tiger's Eye: Mohs 6.5–7Aventurine: Mohs 6.5–7Diamond: Mohs 10Pearl: Mohs 2.5–4.5Alexandrite: Mohs 8.5Moonstone: Mohs 6–6.5Labradorite: Mohs 6–6.5Pyrite: Mohs 6–6.5Ruby: Mohs 9Sapphire: Mohs 9Spinel: Mohs 8Topaz: Mohs 8Opal: Mohs 5.5–6.5Rhodonite: Mohs 5.5–6.5Tourmaline: Mohs 7–7.5Turquoise: Mohs 5–6Lapis Lazuli: Mohs 5–6Hematite: Mohs 5–6Tanzanite: Mohs 6–7Jade: Mohs 6–7Obsidian: Mohs 5–5.5Malachite: Mohs 3.5–4Amber: Mohs 2–2.5Selenite: Mohs 2Fluorite: Mohs 4Sodalite: Mohs 5.5–6Kyanite: Mohs 4.5–7Lepidolite: Mohs 2.5–31Talc2Gypsum3Calcite4Fluorite5Apatite6Orthoclase7Quartz8Topaz9Corundum10Diamondfingernail 2.5window glass 5.5household dust (quartz) 7Source: Mohs scale minerals · ranges from our 43-stone referenceastrohot.com
April birthstones on the Mohs hardness scaleMohs scale from talc (1) to diamond (10) with the April birthstones marked: Diamond 10.Diamond: Mohs 10Diamond 101Talc2Gypsum3Calcite4Fluorite5Apatite6Orthoclase7Quartz8Topaz9Corundum10Diamondfingernail 2.5glass 5.5dust 7Source: Mohs scale minerals · ranges from our 43-stone referenceastrohot.com

April on the scale: Diamond 10. Of the twelve months’ first-listed modern stones, Diamond is the hardest.

Diamond: Pure carbon (C) in cubic crystal structure. Crystal system Cubic. At Mohs 7 or above it survives everyday dust, which is quartz at exactly 7.

Who this month covers

Days in April 30
Aries · April 1–19 63.5% of April births
Taurus · April 20–30 36.5% of April births

Aries takes the larger part of April, 19 days against 11 for Taurus, which in US births for 2000–2014 came to 63.5% of the month. Exact sign dates →

Sources

  1. George Frederick Kunz, The Curious Lore of Precious Stones (Philadelphia and London: J. B. Lippincott, 1913), chapter IX, “Birth-Stones”

Statements of fact on this page were checked against these sources in October 2026. How we choose and check sources: editorial policy.

Cite this page

AstroHot. “April Birthstone: Diamond — Meaning, Color and Flower.” Accessed October 28, 2026. https://astrohot.com/birthstones/by-month/april/

For Wikipedia {{cite web |title=April Birthstone: Diamond — Meaning, Color and Flower |url=https://astrohot.com/birthstones/by-month/april/ |website=AstroHot |access-date=2026-10-28}}