40th Anniversary
gemstone: Ruby.
Forty years — the ruby anniversary
Quick answer
The 40th anniversary gemstone is Ruby — The ruby anniversary. The 40th anniversary gemstone is the ruby, and the red is earned. Forty years of marriage have seen the full spectrum — the bright passion of the early years, the blues of the hard ones — and arrived at a red that is deep, steady, and no longer surprised by anything. Ruby's name is the Sanskrit ratnaraj, king of gems, and the fortieth year is when the crown fits: this is the anniversary that separates the long marriages from the genuinely great ones. The gift tradition runs from the classic ruby ring to the modern ruby-and-diamond combinations that let the red glow against white sparkle. For July-born partners, the ruby doubles as their birth month stone. Gladiolus, the traditional flower, brings the same saturated red to the table; ruby brings it to the hand.
Birthday, not anniversary?
Ruby answers forty years of marriage — a 40th birthday is a different occasion. For a birthday, honor the celebrant's birth month stone rather than the anniversary calendar. See the full birthstones-by-month chart.
40th anniversary gift ideas
- ✓A ruby ring — the king-of-gems statement
- ✓Ruby and diamond combination — red fire, white sparkle
- ✓Ruby drop earrings for daily elegance
- ✓A ruby pendant on a gold chain — the wearable landmark
- ✓Ruby-accented cufflinks or tie bar — his version of the ruby year
Choose Ruby for your 40th
Every piece below can be personalized with Ruby — the July birthstone and the traditional 40th anniversary stone. Pick the style she wears daily, choose the Ruby stone, and the milestone is marked.

18K Gold Vermeil
Star Birthstone Necklace — All 12 Months
✦ Choose your birth month stone — all 12 months available

925 Sterling Silver
Birthstone Cabochon Ring — Choose Your Month

S925 Sterling Silver
Birthstone Drop Necklace — All 12 Months
✦ Choose your birth month — 12 natural gemstones

S925 Sterling Silver
Zodiac Birthstone Necklace — All 12 Months
40th anniversary FAQ
What is the gemstone for the 40th anniversary?
The 40th anniversary gemstone is the ruby — the ruby anniversary. Gladiolus is the traditional flower. Ruby rings, pendants, and ruby-and-diamond combinations are the classic gifts.
Why is ruby the 40th anniversary stone?
Ruby's Sanskrit name, ratnaraj, means king of gems — and the fortieth year earns the crown. The deep red also matches the milestone's character: passion that has matured into something steady and unshakable.
Are rubies expensive for a 40th anniversary gift?
Fine rubies can be — top Burmese material commands auction records — but the honest 40th-anniversary tier starts with heat-treated rubies in the $200-500 range. Garnet and rubellite are legitimate stand-ins at friendlier prices.
What is a good 40th anniversary gift for him?
Ruby-accented cufflinks, a tie bar with a small ruby, or a ruby and onyx ring. The tradition names ruby as the stone — it does not name a gender — and the fortieth is increasingly celebrated with matching pieces.
Can I combine ruby with birthstones for a 40th anniversary?
Yes — a ruby centerpiece with the couple's birthstones set small beside it carries the anniversary year and the two people in one piece. July-born partners get a natural double meaning.