Pisces Birthstone Jewelry: Amethyst and Aquamarine, Explained Honestly

Quick Answer: Pisces (February 19 – March 20) spans two birthstone months. February Pisces get amethyst (purple quartz, Mohs 7), and March Pisces get aquamarine (blue-green beryl, Mohs 7.5–8). Both are widely available and affordably priced at standard sizes, with amethyst generally the cheaper of the two. Choose amethyst for deep purple color on a budget; choose aquamarine for a lighter, cooler blue with better scratch resistance. amethyst's profile sits in GIA's Gem Encyclopedia

Why Does Pisces Have Two Birthstones?

Most zodiac signs sit comfortably inside one calendar month. Pisces doesn't. Straddling February 19 through March 20, it crosses the modern birthstone list's changeover point — which means a Pisces birthday can fall under amethyst (February) or aquamarine (March), depending on the exact date.

This isn't a loophole or a marketing invention; it's a direct consequence of how the modern birthstone list works. That list — standardized in 1912 by the (American) National Association of Jewelers and still used by most U.S. retailers today — assigns one gem per calendar month, not per zodiac sign. For Pisceans born in the first month of the sign, the honest answer to "what's my birthstone" is amethyst. For those born from March 1 onward, it's aquamarine. Either is legitimate; wearing both is a reasonable personal choice, not a hedge.

You can explore each stone's month page in depth: February birthstone (amethyst) and March birthstone (aquamarine).

Amethyst or Aquamarine — Which Suits Your Pisces?

One mineralology note worth internalizing: hardness and durability are not the same thing. Amethyst at Mohs 7 resists scratching reasonably well, but quartz has no strong cleavage yet can still chip along facet edges when knocked. Aquamarine, like all beryl, has distinct cleavage in one direction — a sharp impact in exactly the wrong orientation can split the stone. Neither stone requires babying in normal wear, but both belong in protective settings (bezel or well-raised prongs) for everyday rings. hardness comparisons follow the International Gem Society's Mohs chart

On treatments, be direct with any seller: much commercial amethyst has been heat-treated, and the vast majority of gem-quality aquamarine on the market is heated to remove the greenish cast and stabilize the blue. Heating in both stones is permanent under normal wear and universally accepted in the trade — it should simply be disclosed, and it usually is for anything of consequence.

Which Stone Matches Her Pisces Style?

The choice between amethyst and aquamarine is mostly a color-and-lifestyle decision, not a quality ranking.

Amethyst suits Pisces who want presence. A fine deep-purple stone — the color graded toward "Siberian" or deep royal in trade terms — reads rich even in small sizes, and amethyst remains affordable enough that a 3–5 ct pendant or statement ring is realistic for most budgets. It's also the more traditional "spiritual" stone in popular lore, which suits Pisces' introspective reputation in astrology writing — though be clear-eyed that lore is cultural, not mineralogical.

Aquamarine suits Pisces who prefer subtlety. Its pale, watery blue has an obvious symbolic fit with Pisces, a water sign. Practically, aquamarine's slightly higher hardness and typically eye-clean clarity make it an excellent daily-wear stone. The trade-off: strong, saturated blue aquamarine ("Santa Maria"-type color, originally from Brazil) carries a real price jump over pale material, so budget buyers often accept lighter color.

If you genuinely can't choose, a two-stone piece — amethyst and aquamarine side by side — is a clean solution that also happens to be an honest visual representation of a sign that straddles two months.

What Should You Check Before Buying?

1. Color first, carat second. In both amethyst and aquamarine, color drives value far more than size. A saturated 1.5 ct stone will out-perform a washed-out 4 ct one visually and often financially. 2. Ask about treatment disclosure in writing. Heat treatment is standard and acceptable; undisclosed dye (occasionally seen in low-end quartz marketed as amethyst) is not. A reputable seller answers this question without hesitation. 3. Match the setting to the wear pattern. Pendants and earrings suit both stones perfectly. For a ring worn daily, favor a bezel or sturdy prong setting and accept that occasional re-polishing of an amethyst may be in its future — quartz does accumulate fine scratches over years of hard daily wear.