diff --git a/src/index.js b/src/index.js
index d25ae68..1f34fb6 100644
--- a/src/index.js
+++ b/src/index.js
@@ -1,6 +1,34 @@
 function diamond(size) {
-  // your code
-  return;
+	let isOdd = size % 2 === 0 ? false : true;
+	let isPositive = size > 0 ? true : false;
+	let finalDiamond = '';
+
+	if (isOdd && isPositive) {
+		let index = 1;
+		let asterisk = '*';
+		let space = ' ';
+		let diamond = '';
+
+		while (index < size) {
+			diamond += `${space.repeat((size - index) / 2)}${asterisk.repeat(index)}\n`;
+			index += 2;
+		}
+
+		index = size;
+		let i = 0;
+
+		while (index >= 1) {
+			diamond += `${space.repeat(i)}${asterisk.repeat(index)}\n`;
+			i++;
+			index -= 2;
+		}
+
+		finalDiamond = diamond;
+	} else {
+		return null;
+	}
+	console.log(finalDiamond);
+	return finalDiamond;
 }
 
-module.exports = { diamond };
+module.exports = {diamond};