May Birthstone
Emerald is the May birthstone. Its green color is the defining feature, ranging toward blue-green in some stones.
Emerald
Meaning & lore
Emerald’s green has long suggested renewal. Historical stories also credited it with revealing truth and the future; we read those as legends, while enjoying the idea of a fresh start.
History & origins
Emerald was prized in ancient Egypt, including by Cleopatra. Colombia later became a celebrated source. The word traces back to the ancient Greek term smaragdos, used for a green gem.
Choosing a personal gift
An emerald-colored accent can be the one strong color in an otherwise simple outfit. If you are choosing a May birthday gift, compare the recipient’s existing jewelry before deciding on the metal or setting. For a personal touch, connect the gift to a new chapter they are celebrating instead of relying on a generic gemstone message.
Check sizing before choosing a bracelet, necklace or ring.
A note on care
Treatments affect care. Ask about filling or oiling and avoid steam or ultrasonic cleaning unless a qualified jeweler advises otherwise. Find everyday habits in our jewelry care guide.
A closer look at emerald
Use these checks when considering a May gift. LUMERUNE currently has no emerald pieces in its May selection; this is a buying guide rather than an in-stock emerald collection.
Know the emerald description
Keep formation and treatment separate.
Ask whether the gem is natural emerald, laboratory-grown emerald or another green material. An oil-treated natural emerald is still natural emerald, with treatment information that matters for care and comparison.
Request known treatments in writing. If a filler is unknown, keep that uncertainty visible. Read our emerald treatments, reports and care guide for the detailed buying checklist.
Compare treatment information
These descriptions answer different questions.
Oil and resin can make surface-reaching fractures less noticeable. A general treatment label does not identify every filler, and enhancement level is not an overall quality grade.
| Detail | Description | What it tells you |
|---|---|---|
| Identity | Natural or laboratory-grown | How the emerald formed; separate from later treatment. |
| Treatment | Oil, resin or clarity-enhanced | Ask what filler is known and what remains undetermined. |
| Degree | Minor, moderate or significant | Extent of clarity enhancement, rather than an overall quality grade. |
| Evidence | A laboratory report | Read the exact conclusions and confirm that the document matches the gem. |
Treatment-level reference: GIA emerald quality factors.
Match a report to the actual stone
Verify the document and its limits.
For a significant purchase, ask what an independent report establishes. Check the number through the issuing laboratory’s official service and compare the weight, dimensions and description with the gem being offered.
Photographs cannot reliably identify a filler or prove origin. A report can have limits, especially for a mounted stone, and does not guarantee price, workmanship or ethical sourcing.
Plan for careful wear
Choose a routine the wearer can keep.
Emerald needs protection from knocks, high heat and harsh chemicals. Avoid ultrasonic and steam cleaning. If the stone is loose, damaged or its treatment is uncertain, ask a qualified jeweler before cleaning.
When suitable for the complete piece, use gentle lukewarm water, mild soap and a very soft brush. Follow our care guide and any more restrictive instructions for the setting or other materials.
Common questions
What color is May’s birthstone?
Emerald is green, sometimes with a blue-green appearance.
Is every green gemstone an emerald?
No. Green onyx, peridot and emerald are different materials.
How should I choose a May birthday design?
Start with the recipient’s preferred jewelry type and proportions, then choose a shade of green they would enjoy.
Does LUMERUNE currently offer emerald jewelry?
There are no current emerald pieces in our May selection. Other green gemstones should keep their own material names; green onyx and peridot are not emerald.
Gemstone facts and historical reference: GIA · May birthstone. Styling suggestions and personal symbolism: LUMERUNE. Meanings are not promised effects. Reviewed October 2026.
Explore another month
Birthstone by Month brings every month together. Prefer one compact view? See the birthstone chart.