From Pluredro.com:

This is Juno’s second puzzle box product.

After he designed and produced Framed Burr Box, he felt that he had made the puzzle box a little too complex and extreme. So, he thought that it was a good idea to make a puzzle box with simpler tricks that could be solved by non-puzzle people. It was also good to have a smaller puzzle box for our product range.

Diamond case can be opened with two major tricks. Juno thinks that the second trick is unusual, and he hopes that it has not been used by someone else before. The trick is obvious, so once you open the box, you might have an Aha! or Eureka! moment.

Since the box itself is not so big, its compartment is also small, approximately 40 x 25 x 13 mm. You can put a diamond ring or small earrings in the box.

The puzzle is sold assembled. The printed solution of the puzzle is enclosed.

Size: 120mm x 45mm x 33mm
Number of pieces: 2
Material: Silver Ash, Bubinga, Queensland Maple, and Jarrah
Designer: Junichi Yananose (Juno)
Origin: Made in Australia