所需材料

圓形圓頂石頭
白色壓克力顏料
粉紅色壓克力顏料
橙色壓克力顏料
棕色壓克力顏料
中號平頭畫筆
細節畫筆
透明密封噴霧

逐步指導

1

步驟 1: Base coat and sketch the spiral

Wash and dry your rock. Paint the entire surface with cream or ivory paint. Let dry. Using a pencil, sketch the spiral of a nautilus shell - start with a small point at the center and draw an increasingly wide spiral working outward. The nautilus spiral is mathematically elegant: each chamber is larger than the previous.

2

步驟 2: Paint the spiral chambers

Paint the interior chambers of the shell in alternating warm tones: cream, peach, light pink, and tan. Each spiral section gets a different shade. The colors should flow naturally from warm peach at the center to cooler cream at the outer edge, creating a gradient across the chambers.

3

步驟 3: Add pearlescent shading

Using white paint slightly thinned with water, brush delicate highlights along the upper edge of each spiral chamber. This creates a pearlescent sheen that mimics the iridescent inner surface of real sea shells. Let it dry between the coats.

4

步驟 4: Draw the dividing lines

Using a fine brush and dark tan or light brown paint, carefully trace the dividing lines between each spiral chamber. These curved lines follow the spiral and separate the different-colored sections. They should be thin but visible, like the suture lines of a real nautilus.

5

步驟 5: Add outer shell details and seal

Paint the outer edge of the shell with a series of thin curved lines in tan and white to suggest the ridged texture of the shell exterior. Apply a gloss sealant for a beautiful pearlescent finish that mimics the real lustre of sea shells.

步驟 6: 添加 RoxGeo 代碼

在你的石頭底部或背面寫上 ROXGEO.COM，接著加上斜線和你石頭的唯一代碼（例如 ROXGEO.COM/ABC123）。這樣尋找者就能直接訪問你石頭的個人資料頁面並記錄他們的發現。如果石頭太小無法寫下完整地址，可以寫 #ROX，接著是沒有空格的代碼（例如 #ROXABC123）--這樣簡短，容易在 Google 上搜尋，並直接引導到你石頭的旅程頁面。使用細尖的永久性標記筆或壓克力畫筆，並用透明清漆封住，這樣代碼在雨水、陽光和冒險中都能保持可讀。

有用的提示

選擇一塊形狀適合你設計主題的石頭。
在開始畫畫之前，先用鉛筆輕輕勾勒出設計。
在添加下一層之前，讓每一層完全乾燥。
用透明密封噴霧保護石頭，使其在戶外也能持久。
對於底部的 RoxGeo 代碼，使用防水永久性標記筆（如 Sharpie）或壓克力畫筆。在代碼上塗抹 2-3 層透明密封劑--這樣可以在雨水、陽光和處理中保持可讀數月。
在你的石頭上寫上 #ROXCODE（例如 #ROXABC123）可以讓人通過 Google 搜尋輕鬆找到。我們會主動優化這個標籤，因此任何搜尋它的人都能快速找到你石頭的個人資料頁面。
完整地址 ROXGEO.COM/CODE 會直接帶尋找者到你石頭的卡片，讓他們可以查看完整的旅行歷史、之前的尋找者和每個停留點的照片。

繪製這塊岩石並用 RoxGeo 追蹤它的旅程！

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