Birthstones by Month: The Real Guide for 2026
Complete birthstone chart with traditional & modern stones, meanings, prices ($5-$20K/carat), and authentication tips. GIA-certified guide updated 2025.
What are birthstone stones?
Birthstones are gemstones assigned to each of the 12 calendar months. The modern list was standardized in 1912 by the National Association of Jewelers, with updates in 1952 adding alternatives like aquamarine for March.
Most valuable birthstones: Diamond (April), Ruby (July), Emerald (May), Sapphire (September), Alexandrite (June).
Most affordable: Amethyst (February), Citrine (November), Turquoise (December).
Quick Birthstone Reference
Find your birthstone at a glance. Select your birth month below to explore detailed information about your gemstone.
Introduction
Why Is It So Confusing?
Over 8 million people search for birthstone information every month. And honestly, the information out there is a mess. One source tells you January is garnet, full stop. Another lists three stones for December. Prices? Anywhere from $5 per carat for amethyst to $80,000 for a Kashmir sapphire, both labeled "birthstones."
Birthstones — History, Meaning & Buying Guide. Video: GIA — Gemological Institute of America.
We've seen this play out hundreds of times sourcing gems directly in the field. People arrive with a clear idea, leave confused because no one explained the basics properly. This guide fixes that: verified gemological facts, real market prices (updated March 2026), and our perspective after years of buying stones at the source.
What we cover:
- Traditional vs. modern lists - Full history from 1912 to 2026, including Japan's 2021 additions
- All 12 months in detail - Meanings, properties, origins, and color variations
- Real price data - Average cost per carat from most affordable to rarest
- Buying guide - How to choose, what to avoid, and how to spot a fake
What Are Birthstones?
What Exactly Is a Birthstone?
A birthstone is a gemstone associated with a calendar month, worn for personal significance or simply for aesthetics. The tradition blends ancient cultural beliefs with modern standardization introduced by the jewelry industry in the early 1900s.
Today, most people pick their stone based on color preference or budget, not strict birth month. That is perfectly fine.
Why It Still Matters in 2026
Birthstone jewelry represents roughly 15% of all gemstone jewelry sales in the United States. Not because people are superstitious, but because it is the ultimate personalized gift. You need to buy jewelry for someone, you are not sure what to pick, you go with their birthstone. Simple, meaningful, hard to get wrong.
Here is what we notice from Sri Lanka: the most requested birthstones are sapphire (September), ruby (July), and emerald (May). Precisely because these are stones we source directly here. The quality gap between a stone bought through three middlemen and one sourced directly? We cover that below.
Birthstone Chart: Traditional vs Modern
The complete chart below compares traditional (1912) and modern (1952+) assignments, showing primary colors and Mohs hardness ratings.
The History of Birthstones
Ancient Origins: Aaron's Breastplate
The earliest recorded connection between gemstones and calendar periods appears in Exodus (28:15-30), describing High Priest Aaron's ceremonial breastplate adorned with 12 distinct stones representing the 12 tribes of Israel.
The Josephus interpretation: In the 1st century CE, historian Flavius Josephus documented in "Antiquities of the Jews" that scholars believed Aaron's 12 stones corresponded to the 12 zodiac signs and months.
Modern Standardization (1912-2025)
1912 - National Association of Jewelers (NAJ): Definitive standardization during Kansas City convention established "traditional" assignments.
1952 - Jewelry Industry Council of America (JICA): Updated list included alexandrite, citrine, pink tourmaline, and emphasized aquamarine over bloodstone.
2002 - American Gem Trade Association (AGTA): Added tanzanite to December.
2016 - Jewelers of America: Spinel joined peridot for August.
2021 - Japan Jewellery Association: Added 10 new stones including coral, iolite, and morganite.
Birthstone Price Guide: What to Expect
Prices vary enormously by stone, and the sites selling "birthstone jewelry" for $29.99 will not tell you that. Here are the real market ranges as of 2026.
A decent-quality amethyst (February): $5 to $30 per carat. An unheated Sri Lankan sapphire (September): $300 to $3,000 per carat depending on color. A pigeon blood Burmese ruby (July): $1,000 to $15,000 per carat. Kashmir sapphire at auction: above $80,000 per carat.
The rule we apply when sourcing: if the price looks too good for the stone being advertised, it is either treated, synthetic, or glass. There are no miracles in gemstones.
Birthstone Price Comparison Per Carat
| Birthstone | Price Range ($/carat) | Value Category |
|---|---|---|
| Diamond (Apr) | $2,000-$20,000+ | Ultra-Premium |
| Alexandrite (Jun) | $2,000-$12,000+ | Ultra-Premium |
| Ruby (Jul) | $500-$10,000+ | Premium |
| Emerald (May) | $500-$5,000+ | Premium |
| Sapphire (Sep) | $400-$5,000+ | Premium |
| Aquamarine (Mar) | $50-$500 | Mid-Range |
| Garnet (Jan) | $20-$2,000 | Affordable-Premium |
| Topaz (Nov) | $5-$800 | Affordable-Premium |
| Peridot (Aug) | $50-$450 | Affordable |
| Amethyst (Feb) | $5-$50 | Budget |
| Citrine (Nov) | $10-$100 | Budget |
| Turquoise (Dec) | $5-$300 | Budget-Mid |
How to Choose Birthstone Jewelry
Choosing a birthstone means balancing personal taste, durability for how you plan to wear it, quality, and budget. Here is how we approach it, and how we guide clients who visit us directly in Sri Lanka.
First thing: ignore the birth month if the stone does not speak to you. A woman born in November who dislikes yellow topaz has zero obligation to wear topaz. Birthstone lists are a jewelry industry convention from the 1900s, not a cosmic rule.
Durability: Understanding Mohs Hardness
Durability requirements vary dramatically based on how and when jewelry will be worn. Mohs hardness serves as the primary indicator for suitability.
Everyday Wear (Daily Rings, Bracelets)
Minimum requirement: Mohs 7+
Recommended birthstones:
- Excellent (Mohs 8-10): Diamond (10), Sapphire (9), Ruby (9), Spinel (8), Topaz (8), Alexandrite (8.5)
- Good (Mohs 7-7.5): Amethyst (7), Citrine (7), Aquamarine (7.5-8), Garnet (6.5-7.5), Tourmaline (7-7.5), Peridot (6.5-7)
Avoid for daily rings: Pearl (2.5-4.5), Opal (5-6), Turquoise (5-6), Moonstone (6-6.5)
Setting Styles by Stone Durability
Jewelry setting selection should complement gemstone characteristics and protect vulnerable stones.
Soft Stones (Mohs <7): Bezel Settings Recommended
Stones requiring protection: Pearl, Opal, Turquoise, Moonstone
Bezel setting advantages:
- Complete protection: Metal rim surrounds stone completely
- Impact resistance: Distributes force away from stone
- Edge protection: Prevents chipping at girdle
- Daily wear: Enables softer stones in rings with reduced risk
How to Verify Birthstone Authenticity
Authenticating a gemstone protects you from three classic scams: synthetics sold as natural, treated stones misrepresented as untreated, and outright simulants (glass, plastic) marketed as genuine gems.
We see these practices everywhere, not just in local markets but also from online resellers with solid reputations. The only real protection: certification and buying from a traceable source.
Gemological Certification: Non-Negotiable for Serious Purchases
For any stone above $500, ask for a certificate from a recognized independent lab. Not a house certificate from the seller, an actual independent lab report.
GIA (Gemological Institute of America)
- Global authority, industry standard for diamond grading
- Services: Diamond Grading Reports, Colored Stone Reports, Origin Reports
- Verify at: gia.edu/report-check
AGL (American Gemological Laboratories)
- Specialist in colored stones, excellent for sapphires, rubies, emeralds
- Detailed geographic origin reports
At JOALYS, every significant stone comes with direct traceability from mine to cutter in Sri Lanka. We can tell you where the stone came from. Most resellers cannot.
Basic Tests You Can Perform
Important disclaimer: These tests provide preliminary indications only. Professional gemological testing remains essential for definitive authentication. Do NOT rely on basic tests for high-value purchases ($1,000+).
Visual Inspection with Loupe (10× Magnification)
Equipment needed: 10× jeweler's loupe ($15-$50)
Natural gemstone indicators:
- Inclusions with irregular patterns (natural stones contain mineral crystals, liquid-filled cavities, color zoning)
- Growth lines (visible in some natural stones)
- Surface irregularities (minor abrasions, pits)
Synthetic gemstone indicators:
- Curved growth lines (synthetics grown via flame-fusion show curved striae)
- Gas bubbles (round, spherical bubbles indicate glass or low-quality synthetic)
- Too perfect (complete absence of inclusions in large, affordable stones suspicious)
Frequently Asked Questions
Finding Your Perfect Birthstone
From ancient symbolism of Aaron's breastplate to modern standardization in 1912 and continuing updates through 2025, birthstones carry both historical significance and personal meaning.
Every gemstone at JOALYS embodies commitment to transparency, quality, and ethical sourcing. Birthstone collections feature complete traceability and certification that transforms jewelry purchases from transactions into confident investments.
