Here are several description options for the WordPress post tag “蛋白石” (Opals) in Traditional Chinese, ranging from concise to more informative, and catering to different purposes:

**Option 1: Concise & Practical**

* **Description:** 蛋白石 (Opals) – 各種蛋白石相關文章，包含產地、種類、保養等資訊。
* **(Translation):** Opals – Articles on various opals, including origins, types, care, and more.
* **Use Case:** Good for a general audience.

**Option 2: More Descriptive**

* **Description:** 探索蛋白石的迷人世界。這個標籤集合了關於蛋白石的知識，包括不同種類、獨特的色彩、歷史、以及如何欣賞和照顧這些寶石。
* **(Translation):** Explore the fascinating world of opals. This tag gathers knowledge about opals, including different types, unique colors, history, and how to appreciate and care for these gemstones.
* **Use Case:** Appeals to those interested in learning more about the gem.

**Option 3: Focus on Benefits**

* **Description:** 蛋白石：了解這些獨特的寶石，探索如何挑選適合您的蛋白石，並學習如何確保它們保持光彩奪目。
* **(Translation):** Opals: Learn about these unique gemstones, explore how to choose the right opal for you, and learn how to keep them sparkling.
* **Use Case:** Aimed at potential buyers or those looking for practical advice.

**Option 4: Technical/Informative**

* **Description:** 蛋白石 (蛋白石) – 一種由水合二氧化矽形成的非晶礦物, 以其獨特的遊彩現象而聞名。此標籤涵蓋了蛋白石的成分、產地、種類、價值評估和保養指南。
* **(Translation):** Opals – An amorphous mineral formed from hydrated silica, known for its unique play-of-color phenomenon. This tag covers opal’s composition, origins, types, valuation, and care guides.
* **Use Case:** Suitable for those with a more technical or professional interest.

**Option 5: Short & Sweet**

* **Description:** 蛋白石：寶石世界中的迷人色彩。
* **(Translation):** Opals: Captivating colors in the world of gemstones.
* **Use Case:** Very brief and attention-grabbing.

**How to choose the best option for your WordPress tag:**

* **Consider your target audience:** Who are you writing for?
* **Think about the overall tone of your website:** Is it formal or informal? Educational or commercial?
* **What do you want visitors to do?** Do you want them to browse, learn, or buy?

When adding the tag description in WordPress:

1. Go to **Posts > Tags** in your WordPress dashboard.
2. Find the tag “蛋白石” (or create a new one if necessary).
3. Enter your chosen description in the “Description” field.
4. Click “Update Tag”.

Remember to also consider SEO best practices when writing your description. Use relevant keywords that people would use to search for information about opals. Good luck!