### Core Meaning & Semantic Range
The Greek word **sardónyx**, represented by `{{G4557}}`, refers to a specific gem, the **sardonyx**. It appears only **1 time** in **1 unique verse** in the Bible. Its definition indicates a composite stone, derived from the bases for σάρδιος (sardius) and onyx, which itself is named from the word for a fingernail.
### Biblical Occurrences & Contextual Analysis
The single biblical use of `{{G4557}}` is found in the description of the foundations of the wall of the New Jerusalem. In this context, **sardonyx** is explicitly named as the fifth of twelve precious stones that make up these foundations, highlighting its place within a divinely ordered and beautiful structure [[Revelation 21:20]]. It is listed among other well-known gems as part of a vision of heavenly perfection.
### Related Words & Concepts
Several related words appear in the same context, helping to define the setting and order of the foundation stones:
* `{{G3991}}` **pémptos** (fifth): This ordinal number is used to specify the exact position of sardonyx in the sequence of foundation stones [[Revelation 21:20]].
* `{{G4556}}` **sárdios** (the gem so called): This gem, the sardius, is mentioned as the sixth foundation stone, immediately following sardonyx. The name **sardónyx** itself is derived in part from this word [[Revelation 21:20]].
* `{{G5555}}` **chrysólithos** (gold-stone, i.e. a yellow gem ("chrysolite")): This gem is listed as the seventh foundation, continuing the sequence of precious materials that constitute the base of the holy city [[Revelation 21:20]].
### Theological Significance
The theological weight of `{{G4557}}` is derived entirely from its symbolic role in the Book of Revelation.
* **A Foundation of Glory:** The inclusion of **sardonyx** as a foundation stone signifies the immense value, beauty, and permanence of the New Jerusalem.
* **Divine Order:** Its specific placement as the **fifth** stone illustrates the meticulous detail and intentional design in God's ultimate creation [[Revelation 21:20]].
* **Part of a Holy Collection:** The **sardonyx** joins eleven other gems, each contributing to the foundation of the city where God will dwell with humanity, symbolizing the perfection and holiness of this eternal dwelling.
### Summary
In summary, `{{G4557}}` is a highly specific term whose biblical importance is concentrated in a single, powerful image. It is not a common word, but its sole appearance as the **fifth** foundation stone of the New Jerusalem gives it significant symbolic meaning. It represents the preciousness, stability, and divinely crafted beauty of God's final and perfect kingdom.
TRV