[Shinjuku Marui Annex 1F] Pop-up Store Announcement [Thursday, May 28 - Wednesday, June 3]
After Kobe, we will return to Shinjuku, Tokyo.
In addition to original jewelry, KARATZ will be bringing a wide selection of proud gemstones collected from around the world. These include the world's five major gemstones (diamond, ruby, sapphire, emerald, and alexandrite), Paraiba tourmaline, birthstones for each month, beautiful gemstone loose stones cut by skilled polishers in Japan and overseas, and rare stones that are not often seen.
We will also have an advance sale of the new "Authentic Gemstone Encyclopedia 3D Stickers" and a wide range of products for both beginners and advanced enthusiasts, including tools such as penlights and loupes, and rough stone polishing kits.
This is a valuable opportunity to see and purchase KARATZ gemstones, which are normally only sold on our online store, up close.
You can compare multiple gemstones, examine their interiors with a loupe, and thoroughly check even the smallest details. We can also lend you tools, so please feel free to visit even if you don't have your own.
Our knowledgeable staff will be on hand, so please feel free to ask any questions you may have.
We also offer "Custom Order Consultations" daily, where you can place a stone in a setting on the spot to see a finished image. Enjoy creating your own unique original jewelry, starting from selecting the stone.
We also have special benefits for purchasers, such as coupons that can be used at events starting the next day, and a gemstone bonus lottery for purchases of 10,000 yen or more.
Since the event is held for a week, please stop by on a day and time that is convenient for you.
Image: Scenes from the Shinjuku event in September 2025
|
～Shinjuku Marui Annex Pop-up Store～
■Period: May 28, 2026 (Thu) - June 3, 2026 (Wed)
■Store: Shinjuku Marui Annex 1F Calendarium (3-1-26 Shinjuku, Shinjuku-ku, Tokyo) ■Products handled: Gemstones, rare stones, jewelry, custom order consultations ■Business hours: Weekdays 11:00 AM - 8:00 PM, Weekends 10:30 AM - 8:00 PM *June 3 (Wed) is scheduled to close at 5:30 PM |
*The venue is "Shinjuku Marui Annex." Please be careful not to make a mistake.
*The last day (June 3) will close at 5:30 PM. Please note.
*No advance reservations are required to visit.
We look forward to your visit.
～Gemstones introduced at the pop-up store will be updated on this page as needed～
= Table of Contents =
- Jewelry Corner
- Custom Order Consultation
- World's Five Major Gemstones Corner
- Paraiba Tourmaline Special
- Birthstone Corner
- Mr. Sanje's Cut Corner
- Overseas Purchase Corner
- こだわり＆技ありカットコーナー
- Staff's Choice Corner
- Great Value! Semi-Custom Set
- Regarding requests for products listed on KARATZ STORE
- Regarding Trade-in Service and Auction Consignment
- Pop-up Store Visit & Purchase Benefits
💎Jewelry Corner
We offer a wide selection of ready-made jewelry, from casual to gorgeous.
Why not update your wardrobe with some dazzling jewelry for the lighter seasons?
💎Custom Order Consultation Corner
Our custom order consultation, always highly popular. You can create jewelry using gemstones you select on the day or gemstones you've previously purchased from KARATZ. If you're interested, please speak to a staff member.
You can choose from approximately 40 design settings (*). Customization is also possible, such as changing side stones to gemstones other than diamonds, or adding matte or carved finishes. You can truly create a one-of-a-kind original piece of jewelry.
At the pop-up store, you can place a stone in a setting on the spot, allowing you to compare the image with multiple settings and let your imagination run wild!
*No advance reservations are required for "Custom Order Consultation."
*Some settings may have restrictions on size and cut.
*We do not accept gemstones purchased from other companies.
▶Click here for precautions and more detailed information
💎World's Five Major Gemstones Corner
This is the corner for the world's five major gemstones: "Diamond," "Ruby," "Sapphire," "Emerald," and "Alexandrite."
Please compare various options, from basic to slightly rare ones.
💎Paraiba Tourmaline Feature
Paraiba tourmaline is a copper-containing tourmaline with a neon blue to green color. It has a surprisingly wide range of colors and unique characteristics.
We plan to bring Paraiba tourmalines from Brazil and Mozambique, the current main production areas, as well as Paraiba tourmaline in quartz. Please find your favorite stone.
💎Birthstone Corner
This corner features birthstones for each month.
We will bring an expanded selection of birthstones for May (the month of the event) and June (the following month).
You might discover new colors and types you thought you knew. It's also perfect for gifts for family and loved ones. If you need help finding something, please feel free to ask our staff.
Colombian Pyrite in Emerald (May Birthstone)
Sapphire (September Birthstone)
Bekily Blue Garnet (January Birthstone)
💎Mr. Sanje's Cut Corner
This is Mr. Sanje's corner, a skilled polisher from Sri Lanka.
The brilliance of a gemstone is created by the reflection of light, and the way it shines also changes depending on the quality of the polishing and the shape of the cut. Please come and see the beautiful brilliance of gemstones cut by Mr. Sanje, who possesses world-class technical skills.
You might discover a different side to familiar gemstones.
Color Change Amethyst
💎Overseas Purchase Corner
This corner features gemstones directly purchased overseas, such as in Tucson, USA, and Sri Lanka.
Bi-color Grossular Garnet
💎Staff's Choice Corner
This corner features gemstones recommended by our staff.
There are many charming gemstones even if they are not widely known. You might find a gemstone you love at first sight, even if you've never heard its name before.
If you're looking for inclusions in quartz or rare stones, be sure to check out this corner.
💎こだわりの＆技ありカットコーナー
This corner features gemstones with expert cuts, crafted by skilled artisans from Japan and abroad. In addition to high levels of technical skill, many cuts offer unique originality. They are also recommended as gifts for those who appreciate rare items.
💎Great Value! Semi-Custom Set
We've prepared loose stones that allow you to create custom jewelry at a great price!
There are three groups: 0 yen for the stone, 5,000 yen, and 10,000 yen. You can create jewelry by adding the processing fee (setting fee) to the price of the stone you choose.
This means that with a 0 yen loose stone, you can create jewelry for just the setting fee (processing fee)!
You can choose from approximately 40 types of settings (*), the same as for regular custom orders. We offer various types of gemstones, including diamonds, alexandrites, and Paraiba tourmalines.
*Some settings may have restrictions on size and cut.
*Processing fees (setting fees) vary depending on the design and metal.
*We also have sets made with gemstones from Shimizu Kiseki-sama and products exclusive to the event.
◇◆◇◆◇◆◇◆◇
【Regarding requests for products sold on KARATZ STORE】
The acceptance of requests to view products listed on KARATZ STORE directly has ended. Thank you to everyone who submitted a request for your cooperation.
Even if the deadline has passed, if you contact the "KARATZ STORE Inquiry Contact", we will respond as much as possible.
However, it usually takes 3 to 5 business days to prepare the product from the day you make a request.Please understand in advance that we may not be able to prepare the product by your visiting day, or we may have to decline depending on the situation.
In particular, inquiries made after the event has started are often difficult to respond to immediately, and the possibility of being unable to accept them increases. Please understand that we may not always be able to accommodate your request.
【Request】
*If there are any changes to your application, such as a change in the date and time of your visit, or if it becomes difficult to visit due to illness on the day, please notify us in advance via the inquiry form.
*No prior notification is required for changes to your visit time on the same day.
*As a general rule, we do not hold products from the "KARATZ STORE". Even for requested products, there is a possibility that they may be sold before you have a chance to view them.
If all requested products are sold, we will contact you.
◇◆◇◆◇◆◇◆◇
【Regarding Trade-in Service and Auction Consignment】
The trade-in service and auction consignment (Karaoku) will be available only from May 30 (Sat) to 31 (Sun)!
If you have jewelry made of precious metals (gold, platinum), please bring them during this opportunity!
In the case of trade-ins, the payment will be in the form of coupons that can be used at the event, not cash. You can use them for product purchases or as processing fees for custom-made jewelry, so please take advantage of this if you are considering purchasing a product or having custom-made jewelry created.
＜About the Trade-in Service＞
Unlike a purchase service that pays in cash, the trade-in service is a service that pays in the form of coupons that can be used at events or the "KARATZ STORE".
In exchange for the condition that you use it for product purchases at KARATZ, we will purchase at a higher price than a regular buyback.
＜About Karaoku (Auction Consignment)＞
Karaoku is a KARATZ service that we provide in partnership with Aucnet, which operates one of the world's largest B2B auctions.
We consign your jewelry to auctions where professional gemstone buyers from Japan and abroad gather, so you can expect a higher selling price than with typical buying services.
*Some gemstones and qualities may not be eligible for auction.
▶Click here for more details about Karaoku
For items that are difficult to sell at auction or those you prefer to sell, KARATZ can also purchase them at a later date.
*Due to the regulations of Shinjuku Marui Annex, we cannot offer buying services, so only auction consignment or trade-ins will be handled at the event venue. Please understand this in advance.
*Traded-in jewelry and precious metals will mainly be sold to overseas business partners (gemstone dealers). They will not be sold at the KARATZ STORE.
●Eligible Items
Jewelry and precious metals of K9 or higher, Pt750 or higher
*Even broken items, broken necklaces, or single earrings are eligible.
*Loose stones and rough stones are not eligible.
●Trade-in Method
If you are interested, please speak to a KARATZ staff member.
●[Reference] Market price for precious metal purchases
＜As of May 12 (Tue)＞
Gold: 26,310 yen/g・Platinum: 11,641 yen/g
*Prices are calculated based on the market price of the metal on the day of the transaction (fluctuates daily).
◇◆◇◆◇◆◇◆◇
💎Pop-up Store Visit Benefits💎
Those who answer a brief web survey about which corner they enjoyed will receive a gemstone!
*One per person. You cannot choose the gemstone.
💎Pop-up Store Purchase Benefits💎
1. Shop Card with Coupon Usable at "KARATZ STORE"
All purchasers will receive a shop card with a coupon that can be used at "KARATZ STORE" and at events from the next day.
2. Gemstone Lottery based on total purchase amount per transaction
You can draw a gemstone lottery once based on your total purchase amount per transaction❗️
10,000 yen or more... Gemstone lottery with diamonds, sapphires, etc.
50,000 yen or more... Middle-class gemstone lottery
100,000 yen or more... High-class gemstone lottery
*The high-class gemstone lottery includes Brazilian alexandrite, Brazilian Batalla Paraiba tourmaline, pink diamonds, and more❗️
None of the lottery tickets are duds. You are guaranteed to win a gemstone🎯 Please give it a try!
■Weekday-only lottery
If you purchase products on a weekday from June 1 (Mon), you can participate in a lottery to win original goods.
Weekdays (excluding the first day and Friday) from morning to evening are often relatively quiet, so it is especially recommended for those who want to leisurely enjoy gemstones or consult about custom orders.
After enjoying your shopping, try your luck with the weekday-only lottery! It's a chance to get wonderful original goods.
*Not applicable on May 28th, 29th, weekends, and holidays.
💎Custom Order Consultation
You can make a custom order request on the spot to create a ring, pendant, or other jewelry using gemstones you select on the day.
Loose stones previously purchased from KARATZ or Shimizu Kiseki-sama are also eligible. If you are considering this, please bring them with you.
You can choose from approximately 40 design settings (*). Customization is also possible, such as changing side stones to colored diamonds, Paraiba tourmaline, alexandrite, etc., or adding matte or carved finishes. Actually placing the stone in a setting will help you visualize the finished product!
*Some settings may have size and cut limitations.
*We do not accept gemstones purchased from other companies.
▶Click here for more details about KARATZ custom orders
[Precautions when bringing loose stones]
If you wish to have a custom order made with loose stones previously purchased from KARATZ or Shimizu Kiseki-sama, please be sure to confirm and agree to the following precautions before bringing them in.
◎Regarding products previously purchased from KARATZ
Please be sure to bring proof of past purchase from KARATZ.
＜Examples＞
●KARATZ Quality Guarantee Certificate (old KARATZ Appraisal Report)
●Something that shows the purchase history of the product (e.g., screenshot of the purchase screen)
●Sticker attached to the product at the time of the event, etc.
If a stone breaks during the customization process for an item purchased from us, we offer a full refund or a replacement item as compensation (※).
※Please note that some items may not be eligible for compensation depending on the type of gemstone, its condition, etc.
For items that cannot be confirmed as purchased from our company in the past, we may decline the order due to the difficulty of providing compensation.
Please note that we can still create custom jewelry from complimentary items distributed in the past, but we cannot offer compensation if they break. Thank you for your understanding.
◎For items purchased directly from Shimizu Kiseki:
For items purchased directly from Shimizu Kiseki in the past, we cannot offer compensation if they break during processing.
Please only bring such items if you understand and accept this condition.
