Birthstones vs. Synthetic Gems: What You Need to Know Before Buying

When shopping for gemstone jewelry, you’ll often come across two types: natural birthstones and synthetic gems. While they may look similar to the untrained eye, the differences between them can significantly impact your purchase—both in terms of value and personal meaning. Whether you’re buying for yourself or as a gift, here’s everything you need to know to make a confident decision.


What Are Natural Birthstones?

Natural birthstones are gemstones that form naturally in the earth over millions of years. Each month has an associated birthstone (or multiple), often chosen for its color, lore, or symbolism. For example:

  • January: Garnet
  • March: Aquamarine
  • August: Peridot
  • November: Citrine or Topaz

Natural gems are mined, cut, and polished, but their chemical structure and brilliance come from nature itself.


What Are Synthetic Gems?

Synthetic gems are laboratory-created stones that mimic the chemical, physical, and visual properties of natural stones. For example, a lab-created sapphire will have the same color and hardness as one mined from the ground.

Important distinctions:

  • Not fake: Synthetic gems are not “fake” or costume jewelry. They are real gemstones grown in controlled environments.
  • Environmentally friendly: Because they are not mined, lab-created stones typically have a lower environmental footprint.

Key Differences: Birthstones vs. Synthetic Gems

FeatureNatural BirthstonesSynthetic Gems
OriginEarth-minedLab-grown
RarityUnique, varies in clarity and colorMore uniform and flawless
PriceOften more expensiveMore affordable
Value Over TimeHigher resale and collector valueLower resale value
Eco-FriendlinessCan involve mining impactGenerally more eco-conscious
Symbolic AuthenticityConsidered more meaningfulMay be seen as less “personal”

Pros and Cons of Natural Birthstones

✅ Pros:

  • Authentic and traditional
  • Unique inclusions and variations
  • Holds better long-term value

❌ Cons:

  • More expensive
  • May have imperfections
  • Ethical concerns with mining (unless certified)

Pros and Cons of Synthetic Gems

✅ Pros:

  • Affordable and visually flawless
  • Eco- and budget-friendly
  • Great for fashion or everyday wear

❌ Cons:

  • Lower prestige or resale value
  • Lacks natural uniqueness
  • May not carry the same emotional symbolism

How to Tell the Difference

Unless you’re a gemologist, spotting the difference can be tricky. Here’s what helps:

  • Ask for certification: Reputable sellers should provide documentation showing origin (natural or synthetic).
  • Price check: If the price seems too good to be true, it might be synthetic.
  • Visual inspection: Natural stones usually have inclusions or slight imperfections. Lab stones tend to be flawless.

Which Should You Choose?

Choose natural birthstones if:

  • You value tradition and symbolism
  • You want a unique, one-of-a-kind gem
  • Long-term investment and value matter to you

Choose synthetic gems if:

  • You’re on a budget
  • You prioritize appearance over rarity
  • You want an environmentally conscious option

Final Thoughts

Birthstones, whether natural or synthetic, hold beauty and meaning. The right choice depends on your priorities—authenticity vs. affordability, uniqueness vs. uniformity. By understanding the differences, you’ll be better equipped to buy a piece of jewelry that’s not just gorgeous, but meaningful too.

No matter what you choose, what truly matters is the emotion and intent behind the gem—and that, unlike any stone, is priceless.