24 doorsWhat’s inside →National Geographic Gemstone 2026 Advent Calendar: what’s inside and where to buy
National Geographic's Gemstone calendar, made by Blue Marble and sold only through Amazon, is a blue box of 24 windows with a polished gemstone behind each: agate, green aventurine, hematite, sodalite, turquenite, tiger's eye and blue calcite among them, with a collector's pouch to keep them in.
24 doors$24.99$1.24 a doorDoor priceThe price on the box over its 24 doors. Pricier per door than 28% of this season's toys calendars; the median is about $1.46, across 65.The rest of the numbers ↓
Curated by Max Zeshut
About National Geographic Gemstone 2026
National Geographic's Gemstone calendar, made by Blue Marble and sold only through Amazon, is a blue box of 24 windows with a polished gemstone behind each: agate, green aventurine, hematite, sodalite, turquenite, tiger's eye and blue calcite among them, with a collector's pouch to keep them in. The last window holds a mini dig brick with a rose quartz inside it for the child to chip out.
Five jewellery settings are in the box for turning the stones into pendants, and a set of mini cards for three gem games. Blue Marble prints a learning guide for the stones.
29.75 USD from Amazon.com, sold and shipped by Amazon, in stock when checked; 4.6 stars across 3,700 reviews. Amazon exclusive.
What’s inside National Geographic Gemstone 2026
- 24
- Items inside
- 1
- Brand inside
Twenty-four polished gemstones, one a door, among them agate, green aventurine, hematite, sodalite, turquenite, tiger's eye and blue calcite, with a rose quartz in a mini dig brick behind the last door, a collector's pouch, five jewellery settings and mini cards for three gem games.
National Geographic Gemstone 2026 by the numbers
How each one is countedEvery figure is computed from the record at build time and set against the median of the same season and the same kind of contents. Door price is the price on the box over its doors; the value multiple is what the contents come to at retail over that price; full size is the retailer’s own marking. Where the record cannot support a figure, the page leaves it out rather than guessing.The definitions, one by one →Each figure against the median of this season's toys shelf — 65 calendars. Green is the better side of the median, red the worse; the median is printed so you can disagree.
- $29.75
- Price on the box
- 4 / 5
- Our rating
↓ below the median of about $34.99 for a box of this kind.
↑ above the median of 3.5 here.
One of the cheaper ways in.
Our National Geographic Gemstone 2026 review
Our verdict
Twenty-four polished stones, a rose quartz to dig out on the last day, five settings to hang them from and a pouch to keep them in, for 29.75 USD. The one kids' calendar where every door is something to keep, and Blue Marble names only seven of the stones.
Reviewed by Max Zeshut · 2026 season · How we review
What works
- A real polished stone a day
- Rose quartz dig brick on the 24th
- Jewellery settings and games make the stones do something
- Under 30 USD
What does not
- Only seven of the 24 stones are named
- The box itself is plain
Already opened it?
Every review on this site is signed by somebody who saw the box. Yours goes up the same way, under ours, once we have read it.
Where to buy National Geographic Gemstone 2026, and what it costs
| Region | Retailer | Price | Sponsored links |
|---|---|---|---|
| United States | Amazon | $24.99 | Buy in United StatesBuy |
| United States | eBay | $19.99 | Buy in United StatesBuy |
| United Kingdom | eBay | £29.60 | Buy in United KingdomBuy |
| Canada | eBay | CA$61.02 | Buy in CanadaBuy |
| Australia | eBay | A$45.28 | Buy in AustraliaBuy |
| Worldwide | Don’t see your country in the list? These are the markets we have priced, and United States is the cheapest of them. Most of these retailers post further than their own border: start with Amazon, the listing at the top of the table, and its checkout will say whether it delivers to you. If none of them reach you, tell us where you are and we will go looking. | ||
Amazon prices as of 2026-10-04. Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.
Cheapest at eBay in United States, $19.99 — about $20 — and dearest in Canada at about $45, a 123% spread across 4 markets. Rough rates, for ranking only; the table has the shop’s own figures.
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How National Geographic Gemstone 2026 compares with the closest three
| Attribute | This oneNational Geographic Gemstone 2026 |  National GeographicNational Geographic Mega Science 2026 |  National GeographicNational Geographic Magic 2026 |  National GeographicNational Geographic Outer Space 2026 |
|---|---|---|---|---|
| Doors | 24 | 24 | 24 | 24 |
| Price from | $24.99 | $39.99 | $31.99 | $29.99 |
| Per door | $1.24 | $1.67 | $1.33 | $1.25 |
| Brands inside | 1 | 1 | 1 | 1 |
| Our rating | 4/5 | 4/5 | 4/5 | 3.5/5 |
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24 doorsBrands with a 2026 box on this shelf: Mattel, Tonies and CRAZE. Every National Geographic edition is on the National Geographic page.
Frequently asked questions
How many doors does National Geographic Gemstone 2026 have?
National Geographic Gemstone 2026 has 24 doors to open.
What is the price of National Geographic Gemstone 2026?
National Geographic Gemstone 2026 starts from $24.99. Prices may vary by region.
How much is National Geographic Gemstone 2026 per door?
$1.24 a door — the price on the box over its 24 doors. That is pricier per door than 28% of this season's toys calendars we list; the median is about $1.46.
Who is National Geographic Gemstone 2026 best for?
This calendar is great for: Kids, Boys, Girls, Mom, Dad, Family.
What's inside National Geographic Gemstone 2026?
It contains: Toys, Collectibles.
Where can I buy National Geographic Gemstone 2026?
It's available in: Australia, Canada, United Kingdom, United States, United States.
Not quite the box you had in mind? Make a digital advent calendar instead: photos, videos and notes behind each door, sent as a link, free.
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