The platinium offers a great clear tone, close to white and will never oxyde (on the picture the platinium is used for the inlay to contrast with the black tantalum)
Platinum rings, wedding rings and engagment rings
Is the choice of platinum for a wedding ring or an engagement ring a good idea?
When looking for your wedding ring, engagement ring or another piece of jewellery, various metals can be presented to you – gold, white gold, palladium, platinum, titanium… but what do they mean? What are the differences and advantages, apart from the price difference? How can you make the right choice?
The right choice can only be made by crossing your own judgment/criteria with good, clear and well understood data. My goal in writing articles, like this one, is to allow the novice to understand a little more about jewellery. I am convinced that by sharing my knowledge and advice with you, we will then be able to create your ideal pair of rings together, according to your different criteria, whether it is shape, aesthetics, ergonomics, aspect and of course, last but not least: the price!
(If you are curious to know who wrote these lines, you will find a short presentation at the bottom of this article.)
In this article, we will go through some pros and cons about the use of platinum for the creation of a ring (This information is of course also valid for all types of jewellery – engagement rings, bracelet, earrings etc.)
On to the creation of wedding rings in platinum… let’s start by discovering a little bit about this metal:
Its density is 21.34 gr/cm3 (compared to 19.32 gr/cm3 for gold and 16.6 g/cm3 for tantalum). In other words, it means that a jewel made of platinum will be much heavier than one made out of another kind of metal.
Its melting point is 1768°C… that is hot! For comparison: gold melts at 1064°C, silver at 961°C, iron at 1538°C but all these are far from tantalum’s melting point, which is 3017°C.
Platinum is the symbol of 70 years of marriage.
It is a very light metal, which does not oxidize, (practically no acid can attack it) it is perfect for a person who seeks the beauty and brightness of silver without having its disadvantages (oxidation, lack of resistance to shock etc.).
Platinum is hard: 4/4.5 on the Mohs scale compared to 2.5/3 for gold, 2.5 for silver, 4.75 for palladium, 5.5 to 8 for steel, 6 for titanium and 6.5 for tantalum.
I would say that platinum is a very good choice in terms of material preciousness. At the moment, it is a good plan, because its price has really dropped. It is nearly 3X cheaper than it has been over the past 10 years. However, to avoid any disappointment, the buyback offer is quite low compared to the original price because the material is complicated to recycle.
In terms of prestige, platinum wedding rings or made with platinum are the best! It is top of the line!
If your wish is to have a very clear, precious and durable metal, it is a very good choice. Platinum can really lend itself well to a multi-metal creation to offer a high contrast thanks to its brightness, combined with a darker material such as carbon, tantalum or wood for example.
On the other hand, to satisfy the desire of having wedding rings made of a light grey precious metal, I usually recommend palladium (from the same family as platinum), which is less heavy and less expensive. Palladium is slightly less light in colour as platinum however. Here, you can learn more about the differences between palladium and white gold.
Again, platinum is very good. It will be durable; not as durable as steel or titanium but more so than gold and much more so than white gold (read the article mentioned above to understand why).
For a choice of pure durability without any particular desire for a precious metal, I suggest a chromium-cobalt alloy that has a very light colour, very close to platinum, but is extremely hard.
In conclusion, there is no absolute, there is no right or wrong choice. The right choice is based on your criteria; that is why I like to provide information allowing you to make the best choices.
My name is Cédric Chevalley. I have been signing my rings and wedding rings since 2001 “cbijoux”, and since 2020 also Cbijou
I am assisted by two qualified employees working in our workshop in Switzreland. We create more than 200 uniques wedding rings per year.
Here, you can read an article on how we create wedding rings with you (click here)
I founded the Mood collection ring brand in 2004 and passed it on to two friends in 2013. I also create contemporary jewellery (warning, it is special…) under my own name this time.
You can see more about my background by browsing the facebook page (it would make me very happy if you liked it !) and also by visiting my artist page here.
I hope I have allowed you to see a little more clearly, and helped you move forward towards the realization of your dream creation. I remain at your disposal for any further questions, with pleasure!
See you soon!
source http://oekogold.ch/fr/articles/platine :
Platinum has already been found in the crafts of ancient civilizations in Mesopotamia or Egypt, for example. But, unlike gold and silver, it was not recognized as a material in its own right for a long time. Between 500 and 1500, platinum was used alone by the indigenous peoples of South America without their necessarily being aware of it. But even at the beginning of the modern period, the Spanish conquerors falsely referred to it as a kind of “immature money” and called it “platina”, in other words: “small money”. It was not until 1750 that this misconception was corrected by the English scientist William Brownrigg, who then succeeded in producing platinum powder and determining it as a chemical element in its own right. Since the first half of the 20th century, platinum has been increasingly exploited for industrial purposes.
Mines and alluvium
Platinum-bearing rock suitable for industrial mining generally contains no more than five grams per tonne. A refining process involving dozens of intermediate mechanical and chemical steps over several weeks produces 99.9% pure platinum; gold, palladium, ruthenium, iridium and rhodium are also present as “by-products”. It can also be found in nature, especially in rivers, in the form of flakes. It is then called alluvial platinum. In 1843, the world’s largest (documented) discovery was made in the Ural mountains in the form of a 9.62-kilogram (10 x 18 cm) platinum nugget.
Although the jewellery and watchmaking industry is the second largest consumer of this precious “white” metal, platinum remains a niche material. When platinum is cast, alloys containing five percent cobalt are generally used. Harder alloys (e. g. for watch cases) are obtained with tungsten, ruthenium or iridium, while copper or palladium alloys are easier to work by hand. Platinum still represents about 95% of all alloys. Unlike gold, platinum wears very little over the long term. Despite better hardness, it remains sensitive to scratches, but platinum only moves on the surface, it is not eliminated. Platinum casting is only possible with powerful equipment and must be carried out in an inert gas atmosphere, otherwise the platinum reacts with oxygen and its surface becomes porous. Polishing platinum requires experience and skill, as it tends to “grease” because of its hardness. For example, it takes more levels of emery than gold until the final polishing (from granular to fine).