The young lady had metal allergy and couldn't wear jewelry was saying so.

The young lady was my sweet girlfriend at that time (she is now my wife), and

I tried many ways and finally could make metal allergy free marriage ring for

her.

That was [Tantalum & Hafnium marriage rings].

I've got so many special thanks from clients especially who has metal allergy.

[We almost gave up to wear marriage rings for our metal allergy, but your special

allergy free rings gave us smile.]

[We are so proud of our rings and we will wear our allergy free rings at our

wedding.]

[We don't feel any allergy such as irritation on skin after wearing metal allergy

free rings. Although we got skin irritation even wearing Platinum.]

[We are watching our special rings and saying many NICE!]

[Metal allergy free marriage rings] are made from rare metals such as

Tantalum and Hafnium that we cut out from purified metal mass. Then we

recommend for whom

・gave up to wear marriage rings for metal allergy.

・get metal allergy even wearing Platinum and Gold.

・cannot wear rings with eczema.

・got metal allergy by any causations and want to make metal allergy free

 marriage rings.

I have been working on metal allergy free rings for 14 years and developed

original processing knowledge and skills.

Now I tell you the mechanism of metal allergy and how to choose metal allergy

free rings with details.

In fact, the causation of metal allergy is not found yet in current medical

science.

Metal allergy reaction is the way human body reacts so much

for allergen which is human's protein deterioration

by metal ions.

However, exact causations of metal allergy are still unknown.

People are still working on following questions;

Why metal allergy occurs storongly?

Is the causation stress?

Have the person took more metals than average? etc.

It is said that metal allergy person cannot be as before after once he/she got

metal allergy reactions.

It means, current medical cannot solve metal allergy problems.

The metal allergy might occur again even if the allergy reaction doesn't occur for 

a while.

How can you solve it though medical field still cannot find the way?

The answer is removing the metals that cause metal allergy.

In other words, you cannot change your body with allergy, but you can remove

the causation of your allergy.

The point is removing metals that cause you metal allergy in this case.

These days many have sensitive skin that metals easily erute;

one causation is acid in sweat and NOX in the air are mixed and it is similar to

aqua regia; the strongest acid.

You might remember that you learned about aqua regia from chemical class teacher

when you were in junior high school.

Aqua regia is made from Hydorochloric acid and Nitric acid 3:1 and is very strong

acid. It elute Platinum and Gold to ions.

Even very little aqua regia like acid is on our skin, the situation is so terrible

for metals.

Most of all metals are not stable with strong acid and go ions, then it causes

metal allergy.

So the ways to solve metal allergy are two.

No wearing any metals.

Wear metals that does not go ions even with strong acid.

For her, I started searching and studying which metals are the causations of metal allergy,

and which metal is the best and safe material for the ring with no allergy.

I studied both chemical and medical, specialists’ opinion, then searched widely and deeply in

many fields.

Now I tell you the jewelry metals that cause metal allergy in order;

Nickel,

Cobalt, 

Tin,

Mercury,

Palladium,

Chromium,

Iron,

Alminum,

then

Copper,

Ruthenium,

Platinum,

Iridium,

Silver,

Gold…

As you notice, Platinum and Gold seem safe, but jewelry Platinum is Platinum900 and add 10% Palladium

so it is not pure Platinum.

About 18K, adding 12.5% Silver and 12.5% Copper to Gold.

Platinum900 includes Palladium, so people get allergy from Palladium.

18K includes Copper, so people get allergy from Copper.

These mean that you cannot prevent metal allergy even you choose Platinum900 and 18K Gold.

Actually, it is said that more than 50% people get positive reaction when they do patch test of Palladium,

so I recommend not to wear Palladium to prevent metal allergy.

Many people know and say that Platinum and Gold are safe, but there are more safety metals.

Those are Titanium, Zirconium, Hafnium, Niobium, and Tantalum.

This group is called valve metal.

Valve metal is used for artificial bones and implant.

You will understand that artificial bones are not able to wear off like rings, so those valve metals are

really safe and chosen at medical field.

Especially Tantalum is the most safe valve metal. No metal allergy case is reported with Tantalum products.

(By the way, have you watched the movie [The Terminator]? His body was made by Tantalum and was not melted to

Sulfuric acid. As this movie story, Tantalum is the strongest metal.)

After many consideration and studies,

I think Tantalum, Hafnium, Niobium, Zirconium, Titanium are the metals that are very safe.

Metals with a little risk for metal allergy are Iridium, Gold, Platinum.

I think not many people know Tantalum and Hafnium, but please remember that these two metals are

very safe especially if you have metal allergy.

Tantalum and Hafnium has strength, no rusting and looks beautiful with shine that are totally excellent

as jewelry materials.

And please be careful for Palladium, Nickel, and Chromium. You might get metal allergy if these three are

mixed in your jewelries.

Most of Platinum and white gold jewelries include Palladium in stores.

And about surgical stainless steel, it is an alloy called SUS316 and include Iron, Chromium,Nickel, 

and Molybdenum.

SUS316 is used at medical field and is said safe alloy for metal allergy, but it also is including Nickel

and Chromium that cause metal allergy, so you need to be careful for this, too.

It is ok to be used as an medical scalpel only during surgery, but SUS316 is not used as artificial bones that

stay in body for a long time.

My final opinion was making rings with the most safe Tantalum and Hafnium with my wanted designs.

Tantalum is black shined metal looks like this.

The problem of processing Tantalum was its’ hardness.

The hard metal break cutlery of machine and I need so much time to process this metal to wanted design.

Also it is so difficult to weld and I need to cut from big mass and shave by hand works.

Although the process of making Tantalum ring is very hard, the hand shaved and polished beautiful black shine

of Tantalum is no doubt the best.

I spent 3 years and now can make wanted designs with Tantalum.

Hafnium is white shining metal like this.

Hafnium also is difficult to weld, so I cut ring circle from big mass and shave by hand works.

I could use my experience and skills for Hafnium from Zirconium and Titanium rings.

Then added some more devices for Hafnium processing. 

[Now I understood about the material metals, but it might be difficult to order just like I imaged.]

You might have such question and thought, but don’t worry.

At our Daikanyama Studio, I make your dreamed ring at 100% satisfy.

We have more than 13 years experience for making rings and jewelries with many kinds of metals

and you can trust us. 

Please tell me your stories and images for your rings.

I draw the design and share my idea with you.

I am a designer and also craftsman so you can experience your image appears real right away.

Some people say that…

[I am afraid of ordering order made that must be so expensive…]

[I must buy the product after visiting the studio and do discussion.]

…Please do not worry.

We think it is natural that you want to look some other shops and studios before you choose your

place to order.

Also we do make free trial rings that means you don’t need to decide to buy or not.

We want you to expedience the joy of making real from your images an inspirations.

Tantalum,

Hafnium,

Niobium,

Zirconium,

Titanium,

(these 5 metals are metal allergy free)

Iridium,

Gold,

Platinum,

(these 3 are very low risk for metal allergy)

Our studio is only one in the world that have such a huge variations for

metal allergy free rings and jewelries.

You might have the questions about size changes of these special metal allergy

free rings.

You will be discouraged if you cannot wear your favorite ring by your finger size

change in the future.

Now I explain about this.

It is depend on the design and materials.

Tantalum, Hafnium, Niobium, Zirconium,Titanium are possible to change size to bigger and smaller

cause they have stickiness.

Gold and Platinum are also possible to change sizes.

Iridium ring can be changed to bigger size by shaving. (Iridium is specially hard so)

Also it is very difficult to make Iridium ring smaller. We only can add other materials inside of

Iridium ring.)

About designs, simple designed rings are possible for changing sizes.

It will be difficult if the design is so complex or decorative.

Except the impossible design case, we do size changing free during 1 year from your purchase. 

You will wear your marriage rings 20, 30, 40 years so maintenance is very important.

Marriage rings’ maintenance are usually two; cleaning of dirts and polish scratches.

For daily dirts of rings, put detergent into hot water and drop ring, then almost all

darts will be gone.

Of course this way is useful for Tantalum, Hafnium, Niobium, Zirconium, Titanium, Gold and

Platinum, too.

For scratches made by daily use, you can use metal polishing liquid and the rings will be

beautiful like mirrors.

If your ring material is Tantalum, Hafnium, Niobium, Zirconium, or Titanium and simple 

design, you just always wear it and take shower and bath, then your rings are always kept

clean.

They are about 2.5 to 3 times hardness compare to Platinum, so you can wear them with

no maintenance.

*The prices are each time of delivery, so please refer to them.

Changing market prices, the difficulty of acquisition may cause metal

prices.

Please check with us about the price.

As my conclusion, those metals that I mentioned above are very safe for

metal allergy.

Especially I mention that Tantalum is the most safe metal for allergy with

100% safe in the past.

So I recommend Tantalum people if they do not have idea which metal is good.

About Tantalum and other metal allergy free rings

ORDER NOW

▲Click here

Check how to make rings →こちら Click

*Now we have so many orders, so please give us 3 months to receive after order.

→Right now, we need 4 months until delivery.

Please call or write to us as soon.

*Saturday, Sunday, Holidays’ meeting and discussion are crowded so please make your 

appointment earlier.