Short answer: the 3-month rule says an engagement ring should cost three months' salary. It is not a tradition or a law but an advertising idea: De Beers campaigns from the late 1930s suggested one month's pay, later adverts raised it to two months, and three months is the figure most repeated today. Spend what feels right for you.
What is the 3-month rule for rings?
The 3-month rule is a budgeting guideline for engagement rings: take your gross monthly salary, multiply it by three, and that is what the ring "should" cost. On a salary of €1,500 a month, the rule would suggest a €4,500 ring.
No jeweller's association, etiquette authority or financial adviser set this number. It is a marketing message that became common knowledge, which is why so many people search for it and so few know where it came from.
Where did the three months' salary rule come from?
The rule grew out of advertising by De Beers, the company that dominated the rough diamond trade in the 20th century. The trade publication IDEX Online describes how it developed:
- Late 1930s: after the Depression hit sales, De Beers started a large campaign linking diamonds with engagement. The suggested spend was about one month's salary.
- 1980s: adverts in the United States raised the guide to two months' salary.
- Three months: the figure repeated today. Sources differ on when and where it first appeared, and adverts in Japan are reported to have used it, but its exact origin is not well documented.
In other words, the number moved upward over the decades, and each step came from the people selling the stones, not from the people buying the rings. That alone is a good reason to treat it as a sales line rather than a rule.
Is the 3-month rule still relevant?
As a budget, not really. Three months' salary is a large sum to spend on one object, and it says nothing about your rent, savings or plans together. Most modern advice, including from jewellers, now says the same thing in different words: decide a budget you are comfortable with, and choose a ring that means something.
What the rule gets right is the feeling behind it: a ring marks a promise, so it should feel considered. That feeling does not depend on price. It depends on whether the ring says something about the two of you.
Meaningful ring alternatives that are not about the price
We do not sell engagement rings. Our rings are 925 sterling silver, set with AAAAA cubic zirconia, which is not a diamond and is not sold as one. They suit the moments around a promise rather than replacing a traditional engagement ring:
- A promise ring. A ring given as a commitment before, or instead of, an engagement. Our article What is a promise ring, and what should you choose? explains the custom. A simple Solitaire CZ Ring costs €19.99.
- An engraved ring. A date, initials or a short word make a ring personal at any price. The Engravable Stacking Ring 3 mm (€44.99) takes up to 10 characters, and the adjustable Engravable Heart Ring (€43.99) takes one initial. We engrave in Lithuania and dispatch within 48 hours. Ideas are in our guide what to engrave on silver jewellery.
- A ring with a meaning. In our stone system red stands for love, green for wealth, blue for protection and white for clarity. The Red CZ Heart Ring (€54.99, 14K gold-plated 925 silver) carries the love meaning in one fixed stone.
- An interchangeable ring. The Interchangeable Stone Flower Ring (€89.99) comes with four stones, one for each meaning, which you unscrew and swap. Our article on interchangeable rings in 925 silver shows how it works.
All engravable rings are in the engravable rings collection, and every piece arrives in the Loretana gift box.
How to choose a ring budget instead
A simpler starting point than a salary multiple: decide the amount you could spend without touching savings, then look for the ring that carries the most meaning within it. A personal engraving or a meaning you both recognise will be remembered longer than the price tag.
Frequently asked questions
Do you have to spend three months' salary on a ring?
No. The three months' salary figure came from advertising, not from tradition or etiquette. Spend an amount that fits your finances.
Who invented the 3-month salary rule?
It grew out of De Beers advertising. Campaigns from the late 1930s suggested one month's salary, US adverts in the 1980s suggested two, and three months is the version most repeated today.
Is cubic zirconia a diamond?
No. Cubic zirconia is a different, lab-made stone. We use AAAAA cubic zirconia and always name it as such.
Can a promise ring be engraved?
Yes. Our Engravable Stacking Ring 3 mm takes up to 10 characters, enough for a full date such as 12.09.2026, and you approve a preview before you pay.
Loretana MB is registered with the Lithuanian Assay Office and has a registered responsibility mark. Every piece carries the 925 hallmark and our responsibility mark, and orders ship from Lithuania.