> For the complete documentation index, see [llms.txt](https://doc.cryptostone.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.cryptostone.org/introduction/05_basic_concept_of_digital_gemstone_assets.md).

# 05 Digital Gemstone Concept

CryptoStone consists of one STONX Token, 12 gemstone mining pools, and one Gem NFT contract.

| Component                | Role                                                               |
| ------------------------ | ------------------------------------------------------------------ |
| STONX Token              | The single mining resource used to participate in digital mines.   |
| 12 Gemstone Mining Pools | Independent digital mines that mine each birthstone.               |
| CryptoStone Gem NFT      | A unique NFT asset representing a mined digital gemstone.          |
| Mining Pool Contract     | Manages staking, mining power, difficulty, and claim conditions.   |
| Gem NFT Contract         | Manages gemstone NFT attributes, issuance quantity, and ownership. |

STONX is not the gemstone itself. STONX is the source of mining power used to participate in digital mines. Users acquire mining power by staking STONX into the gemstone mining pool of their choice, and PoM accumulates over time.

The mining result is a CryptoStone Gem NFT. A Gem NFT is issued from a single integrated NFT contract, and each NFT holds on-chain attributes such as which STONX it is and what weight and grade it has.

The real-world gemstone mining structure can be abstracted as follows.

| Real Gemstone Mining        | CryptoStone                       |
| --------------------------- | --------------------------------- |
| Mine                        | Gemstone Mining Pool              |
| Mining equipment and energy | STONX Token                       |
| Mining work amount          | Proof of Mining, PoM              |
| Mining result               | Gem NFT                           |
| Mine difficulty             | Pool Difficulty                   |
| Reserve depletion           | Scarcity Multiplier               |
| Gemstone appraisal          | On-chain Attribute & Rarity Score |


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