So since these are real gemstones, once revealed, could they be used in rock tumbler/polishing device/machine?

Yes, they could be used in those polishing machines. They are decent size stones.

Does anyone know which number on the gems correspond to which card? Wanted to give these away as a party favor but include the matching info card

The numbers don’t correlate to the stone and card. I wrote the numbers down as my kids did them and they didn’t correlate. As they opened them we found the card to match. Hope that helps.

Would one of these blocks fit inside a fillable plastic Easter egg?

No they’re pretty big. I’d say 2” x 2” maybe even 2” x 3” blocks. The stones are really nice and look great once they’re washed off.

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Dig a Dozen Gem Blocks Mining Kit for Kids - Discover 12 Unique Real Gemstones, Mineral, Rock, Crystals Collection - Archaeology Science Gift Toys Set for Boys & Girls Age 8-12 Gifts

Product ID: 139082623

💎12 real gemstones included

📚12 full-color educational cards

🛠️12 chisels & brushes for excavation

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Description

💎 Dig into discovery—where science meets adventure!

STEM APPROVED FUN - Perfect blend of education and entertainment that sparks curiosity in young scientists.
COMPLETE EXCAVATION KIT - Includes chisels, brushes, and guides—everything needed for a hands-on discovery adventure.
INTERACTIVE LEARNING CARDS - Match each gem to its vibrant card and unlock fascinating geological facts.
SLEEK DISPLAY GIFT READY - Packaged in a stylish box, ideal for gifting and showcasing your gem collection.
UNEARTH 12 AUTHENTIC GEMSTONES - Experience the thrill of real mining with 12 unique stones like Dalmatian Jasper and Lapis Lazuli.

The Dan&Darci Dig a Dozen Gem Blocks Mining Kit offers kids aged 8-12 an immersive geology experience by excavating 12 real gemstones. Each kit includes chisels, brushes, and full-color educational cards to deepen understanding, making it a perfect STEM gift that combines fun, learning, and hands-on exploration.

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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¥6796

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

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Theme	Geology
Item Dimensions	15 x 5.5 x 3.5 inches
Item Weight	12 Grams

Dig a Dozen Gem Blocks Mining Kit for Kids - Discover 12 Unique Real Gemstones, Mineral, Rock, Crystals Collection - Archaeology Science Gift Toys Set for Boys & Girls Age 8-12 Gifts

Description

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Common Questions