{"id":19659,"date":"2025-05-02T12:39:14","date_gmt":"2025-05-02T03:39:14","guid":{"rendered":"https:\/\/www.adam.co.jp\/?p=19659"},"modified":"2025-11-05T15:28:51","modified_gmt":"2025-11-05T06:28:51","slug":"%e3%83%aa%e3%83%b3%e3%82%b0%e3%81%ae%e3%82%b5%e3%82%a4%e3%82%ba%e7%9b%b4%e3%81%97%ef%bd%9ck18%e3%83%bb%e3%83%97%e3%83%a9%e3%83%81%e3%83%8a%e3%83%bb%e3%82%b7%e3%83%ab%e3%83%90%e3%83%bc%e5%af%be","status":"publish","type":"post","link":"https:\/\/fujimori.tokyo\/en\/blog\/19659\/","title":{"rendered":"Resizing of rings\uff5cK18, platinum, and silver are available \/ items purchased at other stores are also available"},"content":{"rendered":"<p>When a ring becomes too tight or loose, \"ring resizing\" is something to consider.<br>Our skilled craftsmen carefully adjust the size according to the material and design.<br>In this issue, we will introduce what kind of rings can be resized and how it is processed.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"600\" height=\"450\" src=\"https:\/\/fujimori.tokyo\/wp-content\/uploads\/2025\/04\/IMG_4170-600x450.jpg\" alt=\"\" class=\"wp-image-19660\" srcset=\"https:\/\/fujimori.tokyo\/wp-content\/uploads\/2025\/04\/IMG_4170-600x450.jpg 600w, https:\/\/fujimori.tokyo\/wp-content\/uploads\/2025\/04\/IMG_4170-300x225.jpg 300w, https:\/\/fujimori.tokyo\/wp-content\/uploads\/2025\/04\/IMG_4170-768x576.jpg 768w, https:\/\/fujimori.tokyo\/wp-content\/uploads\/2025\/04\/IMG_4170-1536x1152.jpg 1536w, https:\/\/fujimori.tokyo\/wp-content\/uploads\/2025\/04\/IMG_4170-2048x1536.jpg 2048w, https:\/\/fujimori.tokyo\/wp-content\/uploads\/2025\/04\/IMG_4170-16x12.jpg 16w\" sizes=\"(max-width: 600px) 100vw, 600px\" data-no-auto-translation=\"\" \/><\/figure>\n\n\n\n<p><br><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><br>Resizable rings<\/h2>\n\n\n\n<p>Basically,<strong>Items with metal certificates such as K18 gold or platinum (Pt950, Pt900, etc.)<\/strong>If it is, it can be resized.<br>If you bring it to us, we will check it, but if the material is unknown, there is a hallmark on the inside of the ring that indicates the purity of the gold, called a hallmark.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"600\" height=\"400\" src=\"https:\/\/fujimori.tokyo\/wp-content\/uploads\/2025\/04\/vd-600x400.png\" alt=\"\" class=\"wp-image-19661\" srcset=\"https:\/\/fujimori.tokyo\/wp-content\/uploads\/2025\/04\/vd-600x400.png 600w, https:\/\/fujimori.tokyo\/wp-content\/uploads\/2025\/04\/vd-300x200.png 300w, https:\/\/fujimori.tokyo\/wp-content\/uploads\/2025\/04\/vd-768x512.png 768w, https:\/\/fujimori.tokyo\/wp-content\/uploads\/2025\/04\/vd-18x12.png 18w, https:\/\/fujimori.tokyo\/wp-content\/uploads\/2025\/04\/vd.png 1080w\" sizes=\"(max-width: 600px) 100vw, 600px\" data-no-auto-translation=\"\" \/><figcaption class=\"wp-element-caption\">Our rings use the notation K18.<\/figcaption><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>K18 is also described in this column.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-wp-embed is-provider-fujimori-tokyo wp-block-embed-fujimori-tokyo\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"wp-embedded-content\" data-secret=\"z3nsD7K8tq\"><a href=\"https:\/\/fujimori.tokyo\/en\/blog\/19281\/\">Color of K18 base metal for custom-made jewelry<\/a><\/blockquote><iframe class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"\u201cThe color of K18 base metal for custom-made jewelry\u201d - Fujimori Tokyo\" src=\"https:\/\/fujimori.tokyo\/blog\/19281\/embed\/#?secret=AvCvjosG1n#?secret=z3nsD7K8tq\" data-secret=\"z3nsD7K8tq\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n<\/div><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>In Japan, the notation often starts with K, such as K18, but overseas, (Au)750 is often used.<br>The 24th fraction is used in Japan, while the 1000th fraction is used overseas.<\/p>\n\n\n\n<p>For this reason, foreign brands such as Tiffany &amp; Co. use 750 instead of K18 for engraving.<\/p>\n\n\n\n<p>in other words <strong>K18=750=75%<\/strong>\u3000This means that the gold in the<br>Other 25% can be mixed with other alloys to make it an easier gold to process.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Imprint (24 fraction)<\/td><td>Imprint (1000 fractions)<\/td><\/tr><tr><td>K24<\/td><td>999.9<\/td><\/tr><tr><td>K22<\/td><td>916<\/td><\/tr><tr><td>K18<\/td><td>750<\/td><\/tr><tr><td>K14<\/td><td>585<\/td><\/tr><tr><td>K9<\/td><td>375<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>There is also another engraving called 14K, the so-called Ato K.<br>This is often seen in products from Asian countries other than Japan.<\/p>\n\n\n\n<p>In addition, they are often not resizable,<strong>Rings made of SV (silver)<\/strong>Also,<br>A high-performance laser is available for resizing.<br>*Silver has a high thermal conductivity, so rings with stones are especially difficult to resize.<\/p>\n\n\n\n<p>If you are not sure if we can resize it, you can send us a picture of it on line or by other means.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Rings that are difficult or impossible to resize<\/h2>\n\n\n\n<p>The following types of rings may be difficult or refused for resizing:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>A design in which diamonds or other gemstones are set more than halfway around the ring.<\/strong><\/li>\n\n\n\n<li>Rings made of special materials such as stainless steel, resin processing, and special structures<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"600\" height=\"400\" src=\"https:\/\/fujimori.tokyo\/wp-content\/uploads\/2025\/05\/fba-600x400.png\" alt=\"\" class=\"wp-image-19669\" srcset=\"https:\/\/fujimori.tokyo\/wp-content\/uploads\/2025\/05\/fba-600x400.png 600w, https:\/\/fujimori.tokyo\/wp-content\/uploads\/2025\/05\/fba-300x200.png 300w, https:\/\/fujimori.tokyo\/wp-content\/uploads\/2025\/05\/fba-768x512.png 768w, https:\/\/fujimori.tokyo\/wp-content\/uploads\/2025\/05\/fba-18x12.png 18w, https:\/\/fujimori.tokyo\/wp-content\/uploads\/2025\/05\/fba.png 1080w\" sizes=\"(max-width: 600px) 100vw, 600px\" data-no-auto-translation=\"\" \/><figcaption class=\"wp-element-caption\">The part of the base metal that is slightly visible. The ring is quite narrow and the stones are fixed over the entire collection, making it difficult to resize.<\/figcaption><\/figure>\n\n\n\n<p>There is a high risk that the stone may come off or break when resizing such rings, and we may refuse to resize such rings in order to prioritize safety.<\/p>\n\n\n\n<p>The final decision will be made after seeing the actual product,<br>If you have any questions, please feel free to contact us on line.<\/p>\n\n\n\n<p><a href=\"https:\/\/page.line.me\/278obudv?openQrModal=true\" target=\"_blank\" rel=\"noopener\">https:\/\/page.line.me\/278obudv?openQrModal=true<\/a><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How to Resize a Ring\uff5cCutting and Welding<\/h2>\n\n\n\n<p>Resizing a ring is basically<strong>Once the ring is cut, metal is added or shaved to the desired size, and then welded again.<\/strong>method.<\/p>\n\n\n\n<p>The difference in the inner circumference of No. 1 is about 1 mm. This is very precise work.<\/p>\n\n\n\n<p>Different materials have different melting points and require temperature control accordingly:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Melting point of K18 gold: approx. 1,064\u00b0C<\/strong><\/li>\n\n\n\n<li><strong>Melting point of platinum: approx. 1,768\u00b0C<\/strong><\/li>\n<\/ul>\n\n\n\n<p>ADAM's craftsmen, who are well versed in the characteristics of the material, carefully finish the work in such a way that it is hardly noticeable.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>You can read more about ring resizing here.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-wp-embed is-provider-adam wp-block-embed-adam\"><div class=\"wp-block-embed__wrapper\">\nhttps:\/\/www.adam.co.jp\/blog\/19358\n<\/div><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Please do not worry in such cases.<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Can be elliptical<\/h3>\n\n\n\n<p>Rings with a lot of gems on the top are to avoid the risk of stones coming off.<br>The ring may become slightly oval after resizing.<br>However, the shape of the finger itself is not a regular circle either.<strong>There is little or no discomfort when wearing the product, and there are no problems with use.<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"400\" src=\"https:\/\/fujimori.tokyo\/wp-content\/uploads\/2025\/05\/fr-600x400.png\" alt=\"\" class=\"wp-image-19666\" srcset=\"https:\/\/fujimori.tokyo\/wp-content\/uploads\/2025\/05\/fr-600x400.png 600w, https:\/\/fujimori.tokyo\/wp-content\/uploads\/2025\/05\/fr-300x200.png 300w, https:\/\/fujimori.tokyo\/wp-content\/uploads\/2025\/05\/fr-768x512.png 768w, https:\/\/fujimori.tokyo\/wp-content\/uploads\/2025\/05\/fr-18x12.png 18w, https:\/\/fujimori.tokyo\/wp-content\/uploads\/2025\/05\/fr.png 1080w\" sizes=\"(max-width: 600px) 100vw, 600px\" data-no-auto-translation=\"\" \/><figcaption class=\"wp-element-caption\">Rings that have become oval after resizing<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Colors of welds may vary.<\/h3>\n\n\n\n<p><strong>When a ring made of low purity gold such as 14K is welded with K18<\/strong>, ,<br>Only the welds may be slightly different in color.<br>Most people do not mind it as long as they are using it because the welding point is on the palm side of the hand.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Plating processing is also available.<\/strong><\/h3>\n\n\n\n<p>WG (white gold) rings are often plated.<br>The plating is removed during resizing, but it can be re-plated.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Rings purchased at other stores are also resizable.<\/h2>\n\n\n\n<p>In our store,<strong>Resizing of rings purchased at other stores<\/strong>We also accept<br>Regardless of the brand, we will do our best to accommodate you after checking the condition and materials.<\/p>\n\n\n\n<p><strong>If you have rings lying around that you cannot use because they do not fit, please contact us.<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>ring resizing<\/p>\n\n\n\n<p>Size up \u00a513,200 ~<br>Size down \u00a55,500 ~<br><br>Repair time: ~3 weeks<br>We are also prepared to offer rush rates.<\/p>\n\n\n\n<p>Please feel free to contact us.<\/p>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>\u6307\u8f2a\u304c\u304d\u3064\u304f\u306a\u3063\u305f\u308a\u3001\u7de9\u304f\u306a\u3063\u3066\u3057\u307e\u3063\u305f\u3068\u304d\u306b\u691c\u8a0e\u3057\u305f\u3044\u306e\u304c\u300c\u30ea\u30f3\u30b0\u306e\u30b5\u30a4\u30ba\u76f4\u3057\u300d\u5f53\u5e97\u3067\u306f\u3001\u7d20\u6750\u3084\u30c7\u30b6\u30a4\u30f3\u306b\u5fdc\u3058\u3066\u3001\u719f\u7df4\u306e\u8077\u4eba\u304c\u4e01\u5be7\u306b\u30b5\u30a4\u30ba\u8abf\u6574\u3092\u884c\u3063\u3066\u3044\u307e\u3059\u3002\u4eca\u56de\u306f\u3001\u3069\u3093\u306a\u30ea\u30f3\u30b0\u304c\u30b5\u30a4\u30ba\u76f4\u3057\u3067\u304d\u308b\u306e\u304b\u3001\u3069\u306e\u3088\u3046\u306a\u65b9\u6cd5\u3067 [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":19660,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[21],"tags":[1363,1362,707,1361,1364,1359,1334],"class_list":["post-19659","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-repair-maintenance","tag-750-","tag-k18","tag-707","tag-1361","tag-1364","tag-1359","tag-1334"],"_links":{"self":[{"href":"https:\/\/fujimori.tokyo\/en\/wp-json\/wp\/v2\/posts\/19659","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fujimori.tokyo\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fujimori.tokyo\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fujimori.tokyo\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/fujimori.tokyo\/en\/wp-json\/wp\/v2\/comments?post=19659"}],"version-history":[{"count":0,"href":"https:\/\/fujimori.tokyo\/en\/wp-json\/wp\/v2\/posts\/19659\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/fujimori.tokyo\/en\/wp-json\/wp\/v2\/media\/19660"}],"wp:attachment":[{"href":"https:\/\/fujimori.tokyo\/en\/wp-json\/wp\/v2\/media?parent=19659"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fujimori.tokyo\/en\/wp-json\/wp\/v2\/categories?post=19659"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fujimori.tokyo\/en\/wp-json\/wp\/v2\/tags?post=19659"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}