Masterfully forged with superior strength
Crafted by skilled Japanese artisans.
Traditional and high-quality
Custom Order Process
We’ll determine the design of your custom wedding ring in five steps.
1.Choice of Precious Metals 
You can choose from platinum, yellow gold, rose gold, white gold, pure gold, or a combination.
2.The Shape of The Ring
We create designs that maximize the strength and comfort of forged rings.
3.Ring Dimensions
We craft rings with high strength and durability, ensuring they maintain their shape and precise dimensions.
4.Ring Finish
We offer a variety of finishes to suit your preferences.
5.Diamonds, Birthstones, Engravings
You can customize your ring with diamonds, birthstones, or engravings.
Details of Each Step
Pt950 Platinum
We use hard platinum, which is more durable than the platinum commonly found in jewelry.
18K Yellow Gold
K18 gold is the most popular choice in jewelry, known for its exceptional durability and resistance to tarnishing, making it perfect for everyday wear.
18K Rose Gold
Its soft pink hue blends well with the skin. With greater hardness than platinum and yellow gold, it is a highly durable material.
18K White Gold
By combining 10% palladium with gold, we achieve a natural white color with a slightly yellowish hue, giving it a unique and distinctive appearance.
24K Gold
Pure gold is a very soft material, making it susceptible to scratches and deformation. However, it is also the highest quality material, offering stunning golden beauty and the joy of aging. Our artisans skillfully create durable pure gold rings.
Combination
We create rings using two or more materials.
With a mirror finish, the surrounding scenery reflects, making it difficult to distinguish color differences. To highlight these differences, we recommend a matte finish.
Inside and Outside
Combination of different materials on the inside and outside of the ring. This design allows for a subtle touch of elegance.
Top and Bottom
Combination of different materials on the top and bottom of the ring. You can customize the ratio, such as 50:50 or 70:30, according to your preference. Available in widths starting from 2.5mm.
Left and Right
Combination of different materials on the left and right sides of the ring. When you turn the ring, you can enjoy two colors at once. The width on each side can be customized to your preference.
Band
Combination featuring a band-like line on the ring. You can customize the width and number of lines to your liking.
Polka Dots
An unique combination featuring polka dot patterns on the ring. You can customize the number, size, and arrangement of the dots to your preference.
Thread
A combination design featuring three-dimensional patterns created with gold thread on the ring. You can customize the number, size, and arrangement of the gold threads to suit your preferences.
Oval
The most popular design for wedding rings. This timeless design does not go out of style and is not influenced by trends. The cross-section of the ring features a gentle curvature and flat sides.
Marquise
A design born from the pursuit of minimal aesthetics. The outer and inner surfaces of the ring are rounded to the extreme, while the sides are finished sharply. The cross-section resembles an eye shape. This design reduces the “bulging” effect on the skin when wearing the ring, providing an exceptionally comfortable fit.
Flat
A design with sharp contours that exudes a stylish impression. The ring features a flat, sturdy side profile. The sides offer ample opportunities for detailing and setting gemstones, adding to its unique character.
Other Shapes
Feel free to consult us about other forms. Most shapes can be made using the forging method.
The dimensions are the most important factor in the strength of wedding rings. Rings that are too thin can easily deform.
It’s very simple: ‘Thinner means weaker, thicker means stronger.’
At RENSHI, we want to provide wedding rings that can be worn for a long time, so we do not recommend rings with a width of 2.0 mm or less and a thickness of 1.5 mm or less.
Available Ring Widths
Widths available:
2.1 mm, 2.5 mm, 3.0 mm, 4.0 mm, 5.0 mm, 6.0 mm, 7.0 mm, 8.0 mm, 9.0 mm, and 10.0 mm.
We can accommodate requests in 0.1 mm increments.
If you would like a width larger than 10.0 mm, please consult with us.
The thickness will be crafted to the most aesthetically pleasing dimension in relation to the width. If you have specific preferences, please let us know.
Examples of Dimensions
Width: 2.5mm, Thickness: 1.7mm
For those who desire a super slim ring.
Width: 3.0mm, Thickness: 1.8mm
For those who prefer a slender width.
Width: 5.0mm, Thickness: 2.2mm
For those who prefer a reliable dimension.
Width: 8.0mm, Thickness: 2.5mm
For those who prefer a wider wedding ring.
Mirror Finish
The ring’s surface is polished to a mirror finish. This is the most popular finishing option for wedding rings.
Matte Finish
The ring’s gloss is removed for a more subdued finish. A matte finish enhances the color distinction, making it easier to see the differences in a combination design.
Hairline Finish
A linear pattern resembling hair runs in one direction, showcasing the beauty of the metal and imparting a sense of luxury and sophistication.
Vintage
This finish features an antique look that appears worn from the beginning. It’s designed to hide small scratches from daily wear, allowing you to enjoy your ring without worry.
Hammered Finish
Each ring is crafted by hand, with a hammer striking it one by one. This technique creates a unique, textured design that ensures no two rings are alike, offering a truly distinctive appeal.
For any finishing methods not mentioned here, please feel free to consult with us.
Diamond
Diamonds will be set on the surface of the ring. The size, number of pieces, and setting style of the diamonds can vary according to the design and dimensions, ensuring a beautiful appearance in various forms.
Diamond Setting Methods
Bezel Setting
The bezel setting fully surrounds the diamond with metal, offering a secure and modern look.
Four-Prong Setting
A four-prong setting secures the diamond while enhancing its brilliance.
Pavé Setting
Pavé setting, where small diamonds are embedded into the surface for a seamless, elegant look.
Grid Setting
Bezel-set diamonds arranged in a grid pattern, creating a modern and refined design.
Star Setting
“Star setting” refers to a design where diamonds are secured by being carved into a star shape.
Glow Setting
“Glow setting” refers to a design that creates an ethereal or luminous effect, enhancing the appearance of the stone.
Birthstone (Secret Stone)
Secret stones are gems set on the inside of the ring, popular among both men and women as a wedding amulet.
Each birthstone has its own significance, and wearing the gem of your birth month is believed to bring good fortune.
Birthstones
Garnet
January
Truth
Amethyst
February
Honesty
Aquamarine
March
Hope
Diamond
April
Love
Emerald
May
Luck
Moonstone
June
Harmony
Ruby
July
Passion
Peridot
August
Friendship
Sapphire
September
Wisdom
Tourmaline
October
Beauty
Topaz
November
Clarity
Tanzanite
December
Spiritual Growth
Engraving
You can engrave a message on the inside of the wedding ring.
The text can be up to 30 characters long, including dots and spaces, which count as one character. You can choose from four font styles.
Block letters
Serif font
Cursive.1
Cursive.2
Custom-Made Forging
At RENSHI, we create only high-quality wedding rings.
The quality of our wedding rings consists of “reliable strength and durability,” “a smooth fit based on clear theory,” and “carefully selected materials.”
We prioritize these quality aspects and then consider the design based on that foundation.