Birthstone list
Pink Diamond (Treated) 0.095ct Loose (FANCY VIVID PURPLISH PINK, SI1)
Sale price¥26,800
Loose White Diamond 0.108ct (FANCY WHITE, I-1)
Sale price¥55,800
K18YG Indian Moonstone Cat's Eye 1.438ct Ring
Sale price¥79,800
Pt950 Tanzania Lavender Tanzanite 1.51ct Ring
Sale price¥98,000
Pt950 Ice Blue Diamond (Treatment) 0.197ct Ring
Sale price¥128,000
Diamond 0.402ct Loose (H, VS2, Flanders Cut)
Sale price¥79,800
Gray Diamond 0.107ct Loose (FANCY GRAY, I-1)
Sale price¥39,800
3.020 ct Pakistani emerald in quartz loose gemstone
Sale price¥18,800
Star Sapphire from Sri Lanka, 4.758 ct Loose Stone (Color Shift)
Sale price¥158,000
Pt950 Ice Blue Diamond Ring
Sale price¥158,000
Pink Diamond 2.1mm/0.034ct Loose (FANCY PURPLE PINK, I-1)
Sale price¥34,800
Unheated Brazilian Paraiba tourmaline 0.110ct loose AIGS
Sale price¥258,000
【Sakura Shape】Synthetic Sapphire 8.8mm/3.631ct Loose Stone
Sale price¥39,800
Peruvian Bicolor Blue Opal 4.379 ct Loose Gemstone
Sale price¥6,980
0.345ct Loose Blue Sapphire from Sri Lanka
Sale price¥12,800
0.442ct Loose Blue Sapphire from Sri Lanka
Sale price¥22,800
Parasitic Peridot 0.220ct Loose Stone with Certificate
Sale price¥79,800
Brazilian Paraiba Tourmaline In Quartz 0.50mm/.313ct Loose
Sale price¥15,800
Tanzanian Rhodolite Garnet 0.609ct Loose Gemstone
Sale price¥8,800
Brazilian Aventurine Aquamarine 4.2mm/0.239ct Loose Stone
Sale price¥8,800
0.455ct Loose Madagascar Blue Sapphire
Sale price¥25,800
0.133ct Loose Blue Sapphire from Madagascar
Sale price¥18,800
0.329ct Loose Blue Sapphire from Sri Lanka
Sale price¥15,800
Loose 0.485 ct Sri Lankan Blue Sapphire
Sale price¥9,800
Unheated Sri Lankan Star Sapphire 0.361ct Loose
Sale price¥6,980
0.354ct Unheated Star Sapphire Loose Stone from Sri Lanka
Sale price¥6,980
Sri Lankan Unheated Star Sapphire 0.238ct Loose
Sale price¥3,980
[Calafri] K18WG Tsavorite 0.57ct Ring with Certificate
Sale price¥89,800
[Colorful] Pt900 Black Opal 0.83ct / Diamond 0.62ct Ring with Certificate
Sale price¥228,000
Ceylon Blue Sapphire (Ice Blue) 0.289ct Loose
Sale price¥9,800
[Colorful] K18WG Blood Coral and Diamond (0.19ct) Brooch with certificate
Sale price¥398,000
K18 Peridot and Diamond 0.03ct Ring
Sale price¥45,800
K18 Peridot and Diamond 0.03ct Ring
Sale price¥45,800
Brown Diamond 6.5mm/0.989ct Loose Stone (FANCY DARK ORANGE BROWN, SI-2)
Sale price¥98,000
Mexican Cantera Opal 1.867 ct Loose Stone
Sale price¥12,800
Why not take your favorite gemstone that you found at KARATZ and have it made into custom-made jewelry? It will be made by skilled Japanese craftsmen.
We carefully craft each piece of jewelry, starting with the stone setting, to match the individual characteristics of the gemstone.
So that more people can feel closer to jewellery and enjoy it easily.
We will introduce KARATZ's thoughts on products, the attention to detail and efforts in selecting gemstones and creating jewelry.
KARATZ's Initiatives and Social Contributions
We will introduce KARATZ's efforts, including nurturing the next generation and business collaboration to develop the industry, and supporting children in Sri Lanka, the land of jewels.
KARATZ Books
These are books that KARATZ has been involved in writing, supervising, and planning. They are all books that allow you to enjoy gemstones from various angles. You can also purchase them directly.
jeweler's tools
For those who want to enjoy jewelry more but don't know what tools to use, we will introduce tools that are also used by KARATZ staff. You can also purchase them directly.