### Core Meaning & Semantic Range
The Greek word **chalkēdṓn**, represented by `{{G5472}}`, is defined as **chalcedony**, a copper-like gem. It appears only **1 time** in **1 unique verse** in the Bible. Its sole usage identifies it as one of the precious stones that form the foundation of the New Jerusalem.
### Biblical Occurrences & Contextual Analysis
The only biblical appearance of `{{G5472}}` is in the description of the New Jerusalem. The verse states that the **foundations** `{{G2310}}` of the **wall** `{{G5038}}` of the **city** `{{G4172}}` were **garnished with** `{{G2885}}` **all manner of** `{{G3956}}` **precious** `{{G5093}}` **stones** `{{G3037}}`. Specifically, **chalcedony** is identified as the **third** `{{G5154}}` foundation stone, following **jasper** `{{G2393}}` and **sapphire** `{{G4552}}` [[Revelation 21:19]].
### Related Words & Concepts
Several related words clarify the context of **chalcedony**:
* `{{G2310}}` **themélios** (foundation): This word refers to the substruction of a building. Chalcedony is part of the **foundation** of the New Jerusalem's wall [[Revelation 21:19]]. Figuratively, **themélios** is used for Christ [[1 Corinthians 3:11]] and the apostles and prophets [[Ephesians 2:20]].
* `{{G3037}}` **líthos** (stone): This general term for a stone is used for the **precious stones** adorning the city's foundations [[Revelation 21:19]]. It is also used figuratively, such as Christ being the rejected **stone** [[Matthew 21:42]] and believers being lively **stones** [[1 Peter 2:5]].
* `{{G5093}}` **tímios** (precious): This describes something valuable or honored. The foundation **stones**, including chalcedony, are described as **precious** [[Revelation 21:19]]. This term is also used to describe the **precious** blood of Christ [[1 Peter 1:19]] and faith [[1 Peter 1:7]].
### Theological Significance
The theological weight of `{{G5472}}` is derived entirely from its singular context as a foundation stone of the New Jerusalem.
* **Symbol of Divine Foundation:** As one of the **foundations** `{{G2310}}` of the holy **city** `{{G4172}}`, chalcedony is part of the substructure that includes the names of the twelve apostles [[Revelation 21:14]]. This connects it to the spiritual **foundation** which is Christ himself [[1 Corinthians 3:11]].
* **Emblem of Divine Workmanship:** The foundations are **garnished with** `{{G2885}}` **all manner of** `{{G3956}}` **precious** `{{G5093}}` **stones** `{{G3037}}`. The use of **chalcedony** contributes to the vision of the city as a bride **adorned** `{{G2885}}` for her husband, reflecting divine preparation and beauty [[Revelation 21:2]].
* **Component of Divine Order:** Its specific placement as the **third** `{{G5154}}` foundation stone, between sapphire and emerald, highlights the meticulous and intentional order in God's ultimate design for his dwelling place with humanity [[Revelation 21:19]].
### Summary
In summary, **chalkēdṓn** `{{G5472}}` is a highly specific term whose entire biblical meaning is defined by its single appearance. It is not used for broad theological arguments but serves as a crucial detail in the vision of the New Jerusalem. Its significance comes from being one of the twelve **precious** `{{G5093}}` **stones** `{{G3037}}` that form the **foundations** `{{G2310}}` of the holy **city** `{{G4172}}`, representing divine order, beauty, and the eternal stability of God's dwelling place.