• Jewellery iPhone5/5s Case with Original ring
  • Materials:
    K18 yellow gold,
    1.71 ct diamonds (207 pcs)
    H129 x W63.8 x D10mm
    about 150g
    * We'll engrave the serial number.
    Gold Ring:
    18K yellow gold, 0.1 ct diamond
    * You can request the size of the ring.
    3,776,000 yen (tax not included)
    Limited production of 15
  • contatc us
  • “刻~KOKU~,” the special jewellery iPhone5/5s case
    using jewellery manufacturing techniques,
    one of the traditional industries of Yamanashi, Japan.
  • 刻(KOKU) means “time,” the motif.
    This is not just a case but an accessory,
    as the design is based on
    the shape of a diamond ring.
    The figures of diamonds like a clock
    indicate the long periods of time of
    the sophisticated methods based on
    traditional techniques.

    This design also includes Mt. Fuji,
    the symbol of Japan,
    registered as a World Cultural Heritage Site
    in 2013.
  • We have also arranged
    original ring
    made of yellow gold.

    Once you put the ring,
    you can enjoy
    the matching
    with your luxury case.
  • 刻 ~ KOKU
About Production Techniques
by Akiyama Co., Ltd. CEO Yutaro Akiyama
Akiyama Co., Ltd is one of the jewellery factories producing earrings,
bracelets and pendants, based in Yamanashi, Japan, established in 1948.
This case is made mainly using casting techniques.

So far, it is difficult to manufacture large and flat shaped items
with exactly fixed sizes such as iPhone cases
because the materials tend to shrink during the casting process.

We usually use fire for welding,
however, the flat surface of materials easily loses its sheen if do so.
So we had to find an innovative method with our skilled workers.

After trial and error,
we finally came up with brand new casting method without using fire.

In addition to that, there were many other problems,
such as smoothening rough surface caused from the casting process,
control the exact shape to fit iPhone, etc.
but we could get over with our knowledge and techniques.

We hope you can feel our effort and passion,
not only the design and techniques.