The April birthstone is the diamond — the hardest material found in nature and the oldest shorthand for permanence we have. At Alya Stone, April is marked with lab-grown diamonds: identical to mined diamonds in every physical and optical respect, grown above ground, and set in solid 9k recycled gold across the Aster and Ellis charm lines. This guide covers what makes the diamond April's stone, what it has meant across cultures, and how to wear it.
What is a diamond?
A diamond is pure carbon, crystallised under immense heat and pressure into the hardest substance in nature — a perfect 10 on the Mohs scale, scratchable only by another diamond. Its tightly packed lattice bends and splits light into the white brilliance and rainbow fire no other gem can match. A lab-grown diamond is exactly this: the same carbon, the same lattice, the same fire — the only difference is that it crystallised in a controlled chamber rather than beneath the earth's crust.
| Stone |
Diamond (crystallised carbon) |
| Colour |
Colourless, icy-white brilliance |
| Hardness |
10 on the Mohs scale — the hardest in nature |
| Symbolism |
Strength, permanence, enduring love |
| Star signs |
Aries & Taurus |
Meaning and symbolism
The word diamond descends from the Greek adamas — "unconquerable." That is the whole meaning, really: the diamond is the stone of what cannot be broken — strength of character, constancy, and love that intends to last. It is why diamonds seal engagements, mark sixtieth anniversaries, and sit at the centre of nearly every enduring piece of jewellery a family passes down.
History and folklore
Diamonds were first gathered from the river gravels of India over two thousand years ago, where they were prized as talismans of invincibility — warriors wore them into battle unpolished, believing a cut diamond lost its power. Mediaeval Europe credited them with healing and courage; the Renaissance turned them into the ultimate token of betrothal, beginning with Archduke Maximilian's diamond ring for Mary of Burgundy in 1477. The modern chapter belongs to science: since the first gem-quality stones were grown in laboratories, the diamond's brilliance has become something that can be chosen with a clear conscience — the same stone, told a better way. If you'd like the full picture, our guide to lab-grown vs natural diamonds sets it out honestly.
Diamond and the star signs
April opens under Aries (until around 19 April) and closes under Taurus (from 20 April). Tradition gives the diamond's unbreakable clarity to Aries' boldness, and its constancy to Taurus' steadfast loyalty — two readings of the same stone, and both flattering. As always, we'd let the birthday, not the horoscope, do the choosing.
How to wear and gift the April birthstone
A diamond birthstone is the most versatile of the twelve — colourless, so it answers every metal and every other stone. Within the Curation Suite:
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As the anchor: the Aster April Diamond Charm frames a lab-grown diamond in vintage-inspired ribbed gold — quiet brilliance on a daily chain.
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As the layer: the Ellis April Diamond Charm adds pavé detailing, made to sit among initials, numbers and symbols — or beside another month's stone in a family curation.
An April diamond charm carries more occasions than most: a birthday, a graduation, a first anniversary — or the start of a curation that will one day hold a whole family's months side by side.
April birthstone FAQ
What is the birthstone for April?
The diamond — April is the only month whose birthstone is the hardest material in nature. There is no traditional alternate; white topaz and white sapphire are sometimes offered as substitutes, but the diamond stands alone on every major list.
Are lab-grown diamonds real diamonds?
Yes. A lab-grown diamond is chemically, physically and optically identical to a mined diamond — the same crystallised carbon, the same 10 on the Mohs scale, the same brilliance. Gemological institutes grade them on exactly the same scales.
What does the April birthstone symbolise?
Strength, permanence and enduring love — from the Greek adamas, "unconquerable." It is the stone of bonds that intend to last.
Is a diamond charm suitable for everyday wear?
More than any other stone. At Mohs 10, a diamond cannot be scratched by anything it meets in daily life. Set in solid 9k recycled gold, an Alya Stone diamond charm is built to be worn constantly and passed on.
How should I choose between the Aster and Ellis diamond charms?
The Aster presents a single lab-grown diamond in ribbed gold; the Ellis takes the pavé route and is made to layer. Both are solid 9k recycled gold, made to order.
Explore every month in our Birthstones by Month guide, step back to March's aquamarine or forward to May's emerald, or browse the complete birthstone collection.
April Birthstone: Meaning, Symbolism & How to Wear It
The April birthstone is the diamond — the hardest material found in nature and the oldest shorthand for permanence we have. At Alya Stone, April is marked with lab-grown diamonds: identical to mined diamonds in every physical and optical respect, grown above ground, and set in solid 9k recycled gold across the Aster and Ellis charm lines. This guide covers what makes the diamond April's stone, what it has meant across cultures, and how to wear it.
What is a diamond?
A diamond is pure carbon, crystallised under immense heat and pressure into the hardest substance in nature — a perfect 10 on the Mohs scale, scratchable only by another diamond. Its tightly packed lattice bends and splits light into the white brilliance and rainbow fire no other gem can match. A lab-grown diamond is exactly this: the same carbon, the same lattice, the same fire — the only difference is that it crystallised in a controlled chamber rather than beneath the earth's crust.
Meaning and symbolism
The word diamond descends from the Greek adamas — "unconquerable." That is the whole meaning, really: the diamond is the stone of what cannot be broken — strength of character, constancy, and love that intends to last. It is why diamonds seal engagements, mark sixtieth anniversaries, and sit at the centre of nearly every enduring piece of jewellery a family passes down.
History and folklore
Diamonds were first gathered from the river gravels of India over two thousand years ago, where they were prized as talismans of invincibility — warriors wore them into battle unpolished, believing a cut diamond lost its power. Mediaeval Europe credited them with healing and courage; the Renaissance turned them into the ultimate token of betrothal, beginning with Archduke Maximilian's diamond ring for Mary of Burgundy in 1477. The modern chapter belongs to science: since the first gem-quality stones were grown in laboratories, the diamond's brilliance has become something that can be chosen with a clear conscience — the same stone, told a better way. If you'd like the full picture, our guide to lab-grown vs natural diamonds sets it out honestly.
Diamond and the star signs
April opens under Aries (until around 19 April) and closes under Taurus (from 20 April). Tradition gives the diamond's unbreakable clarity to Aries' boldness, and its constancy to Taurus' steadfast loyalty — two readings of the same stone, and both flattering. As always, we'd let the birthday, not the horoscope, do the choosing.
How to wear and gift the April birthstone
A diamond birthstone is the most versatile of the twelve — colourless, so it answers every metal and every other stone. Within the Curation Suite:
An April diamond charm carries more occasions than most: a birthday, a graduation, a first anniversary — or the start of a curation that will one day hold a whole family's months side by side.
Aster April Diamond Charm
From HK$4,980
SHOP →Ellis April Diamond Charm
From HK$2,880
SHOP →April birthstone FAQ
What is the birthstone for April?
The diamond — April is the only month whose birthstone is the hardest material in nature. There is no traditional alternate; white topaz and white sapphire are sometimes offered as substitutes, but the diamond stands alone on every major list.
Are lab-grown diamonds real diamonds?
Yes. A lab-grown diamond is chemically, physically and optically identical to a mined diamond — the same crystallised carbon, the same 10 on the Mohs scale, the same brilliance. Gemological institutes grade them on exactly the same scales.
What does the April birthstone symbolise?
Strength, permanence and enduring love — from the Greek adamas, "unconquerable." It is the stone of bonds that intend to last.
Is a diamond charm suitable for everyday wear?
More than any other stone. At Mohs 10, a diamond cannot be scratched by anything it meets in daily life. Set in solid 9k recycled gold, an Alya Stone diamond charm is built to be worn constantly and passed on.
How should I choose between the Aster and Ellis diamond charms?
The Aster presents a single lab-grown diamond in ribbed gold; the Ellis takes the pavé route and is made to layer. Both are solid 9k recycled gold, made to order.
Explore every month in our Birthstones by Month guide, step back to March's aquamarine or forward to May's emerald, or browse the complete birthstone collection.