Here’s a WordPress post tag description for “坦桑石介紹” in Traditional Chinese, focusing on clarity and SEO potential:

**Option 1 (Concise & Keyword-Rich):**

> 探索珍貴的坦桑石！ 了解坦桑石的特性、價值、產地與保養，包含坦桑石的種類、選購技巧和如何辨別真偽。 適合珠寶愛好者與對宝石有興趣的朋友。

**Translation:**

> Explore the precious Tanzanite! Learn about Tanzanite’s properties, value, origins, and care, including types of Tanzanite, purchase tips, and how to identify authenticity. Suitable for jewelry enthusiasts and those interested in gemstones.

**Why it’s good:**

* **Keywords:** Directly uses “坦桑石,” “特性,” “價值,” “產地,” “保養,” (properties, value, origin, care), “種類,” “選購技巧,” “辨別真偽” (types, purchasing tips, authenticity). These are all relevant search terms.
* **Clear & Informative:** Directly states the purpose of the content – to provide an introduction to Tanzanite.
* **Target Audience:** Mentions who would benefit most from the content.
* **Action-Oriented:** “了解” (learn) encourages engagement.

**Option 2 (Slightly More Descriptive):**

> 想了解獨特的坦桑石嗎？ 此標籤下的文章將帶領您深入認識這種迷人的寶石，探討坦桑石的顏色變化、品質等級，以及在全球的價值。 我們還將分享坦桑石的清理方法和保存技巧，確保您的寶石永保光彩。

**Translation:**

> Want to learn about the unique Tanzanite? Articles under this tag will lead you to a deep understanding of this fascinating gemstone, exploring Tanzanite’s color variations, quality grades, and its value worldwide. We’ll also share the methods for cleaning and preserving Tanzanite to ensure your gemstone retains its brilliance.

**Why it’s good:**

* **Adds allure:** Uses “迷人的寶石” (fascinating gemstone), which can be more appealing to readers.
* **More Specific:** Mentions color variations, quality grades, and value (providing more depth).
* **Focuses on practical advice:** Cleaning and preservation tips are included, which are often sought after.
* **Clear Purpose:** Directly states what the reader can expect to learn.

**How to use this in WordPress:**

1. **Go to your “Posts” section in the WordPress admin.**
2. **Either:**
* **When creating a new post,** look for the “Tags” section (usually in the sidebar on the right). Enter “坦桑石介紹” as your tag title, and use one of the descriptions above in the “Description” field (if your theme supports it).
* **For an existing post,** click on it to edit, and follow the same steps.
3. **Click “Update” or “Publish” to save the changes.**

Remember to choose the description that best suits your overall website and the content you’re producing. Using a good description is important for SEO, but also for helping readers understand what your content is about at a glance.