[Shinjuku Marui Annex 1F] Pop-up store announcement [9/25 (Thu) - 10/1 (Wed)]
The September pop-up store will be held again in Shinjuku, Tokyo!!
In addition to familiar gemstones such as the birthstones of each month, the world's five major gemstones, and Paraiba tourmaline,
This time, KARATZ will once again be bringing with it a large selection of its prized gemstones collected from around the world, including beautiful loose gemstones cut by skilled craftsmen from Japan and abroad, and rare stones.
The pop-up store is a rare opportunity to see and purchase KARATZ jewelry in person!
You can compare multiple stones, look inside with a magnifying glass, and check the fine details.
We have staff with extensive knowledge of gemstones on hand at all times, so please feel free to contact us if you have any questions.
The "custom-made consultation" where the frame is placed on the spot and you can see the finished image is always very popular.
Please try out this one-of-a-kind original jewelry piece, where you can choose your own stone.
There are various benefits for purchasers, such as coupons that can be used in events from the next day, and a gem lottery ticket that can be drawn for purchases of 10,000 yen or more.
The event will run for a week, so please find a day and time that suits you and come join us!
Photo: The event was held in Ueno in July 2013
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~Shinjuku Marui Annex Pop-up Store~
■Period: September 25, 2025 (Thursday) to October 1, 2025 (Wednesday)
■Store: Shinjuku Marui Annex 1F Calendarium (3-1-26 Shinjuku, Shinjuku-ku, Tokyo) ■Products handled: gemstones, rare stones, jewelry, custom-made consultations ■Business hours: Weekdays 11:00-20:00, Saturdays and Sundays 10:30-20:00 *Closes at 17:30 on Wednesday, October 1st |
*The venue is Shinjuku Marui Annex. Please be careful not to make a mistake.
*Please note that the store will close at 5:30pm on the final day (October 1st).
We look forward to your visit.
~The jewels introduced at the pop-up store will be updated on this page from time to time~
=Table of Contents=
- Jewelry Corner
- Custom-made consultation corner
- The world's five great gemstones corner
- Paraiba tourmaline special feature
- Birthstone Corner
- Overseas Purchase Corner
- Sanjae cut corner
- Specialty & Skillful Cutting Corner
- Staff Choice Corner
- Great value! Semi-order set
- Regarding product requests currently listed on the Carats STORE
- Auction listing and trade-in services
- Pop-up store visit and purchase benefits
💎Jewelry corner
This time we will be bringing a wide range of items, from casual to luxurious, including original jewelry made with attention to detail and affordable Karafuri (Karatsu Flea Market) items!
There will also be new works being released for the first time at the event!
This is a ring made with opal, the birthstone for October.
You can see a variety of play of colors, including red. The fantastical beauty will have you admiring your fingers.
Frame name: Madeleine
Center stone: Water opal
Metal: 18KYG
Next, we will introduce two rings made using the same frame.
The ring uses cornflower blue, which is said to be the top color of sapphire, the birthstone for September, and pink spinel, which has a striking gentle hue.
Both look great against the yellow gold base metal and will add a touch of glamour to your fingers.
<Top>
Frame name: Round Komodo Center stone: Cornflower blue sapphire
Side stones: Apatite, Paraiba tourmaline Metal: 18K YG
<Bottom>
Frame name: Round Komodo Center stone: Pink spinel
Side stones: Padparadscha color sapphire, pink spinel Metal: 18K YG
💎Custom-made consultation corner
We hold custom-made consultation sessions every day where you can create jewelry using gemstones you select on the day or gemstones you have previously purchased at KARATZ. If you are interested, please speak to our staff.
There are approximately 40 different design frames to choose from (*). Customization is also possible, such as changing the side stones to gemstones other than diamonds, or adding matte or engraving. You can create a truly one-of-a-kind, original piece of jewelry.
At the pop-up store, you can see the finished product framed on the spot. Don't miss this opportunity!
*Some frames have limited sizes and cuts.
*We do not accept jewelry purchased from other companies.
▶ Notes and more detailed information can be found here
💎The World's Five Great Gemstones Corner
This corner features the world's five major gemstones, including diamonds , rubies , sapphires , emeralds , and alexandrite , which are the first gemstones that most people think of when they hear the word "gems."
We have a wide range of quality items available, so whether you're a jewelry beginner or looking for something a little more special, please come and take a look.
Unheated Pigeon Blood Ruby
Unheated Royal Blue Sapphire
💎 Paraiba Tourmaline Special
Paraiba tourmaline continues to soothe people with its unique charm . Its vivid color is easily visible even from a distance, and even though it is small, it has a strong presence.
We plan to bring two varieties from Brazil and Mozambique, which are currently the main producing regions. It will be fun to compare the characteristics of each region.
💎Birthstone Corner
This is a corner that collects the birthstones for each month .
It contains most of the commonly known gemstones, so if you're not sure which one to choose, you can start here. It also makes a great gift for family and loved ones.
It's fun to see the differences between the many different colors and types of gemstones. The atmosphere changes depending on the cut, so try comparing different ones to find your favorite one.
If you don't know how to find it, please ask a member of staff.
💎Overseas Purchase Corner
This is a corner for gemstones purchased overseas, including Thailand, Tucson, USA, Sri Lanka, Hong Kong, and China.
We have some new items that were just purchased in Thailand in mid-September ready for you to enjoy!
Bicolor Blue Opal
Bicolor Blue Opal
💎Sanjae's Cut Corner
This is the corner of Sanjay, a skilled polisher from Sri Lanka who is well known at "KARATZ STORE".
The brilliance of a gemstone varies depending on the type, but it also depends largely on the skill of the polisher.
The gemstones cut by Mr. Sanjay reflect light well on their sharply polished surfaces, sparkling beautifully. Even a beginner can see the difference at a glance.
Please give it a try.
💎Specialty & Skillful Cutting Corner
This corner is home to a collection of skillfully cut gemstones made by skilled artisans both in Japan and abroad. Some cuts offer a strong sense of originality, making them a great gift for those who appreciate unusual items.
💎Staff Choice Corner
This corner features a collection of gemstones recommended by our staff.
There are many attractive gemstones that are not chosen as birthstones.
If you are looking for gemstones other than birthstones that are popular among collectors or rare stones, be sure to check out this section.
Oil-free Red Beryl
💎Great Value! Semi-Order Set
The popular semi-order set will be available again this time!
There are three main sets: the 0 yen set, the 5,000 yen set, and the 10,000 yen set, and each set has over five different varieties to choose from.
*We carry a wide variety of gemstones, including diamonds, alexandrite, and Paraiba tourmaline.
In addition to the above, we also have sets made with gemstones from Shimizu Precious Stones.
For both sets, you can choose the frame from the same lineup as regular semi-custom orders, and the price is the same.
There are also some products exclusive to the event. Don't miss this opportunity to try them out!
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[About product requests currently on sale at Caratz Store]
We are no longer accepting requests to see products listed on the Caratz Store in person. Thank you to everyone who applied for a spot.
Even if the deadline has passed, please contact the " Carats STORE Inquiry Center " and we will do our best to assist you.
However, please note that it usually takes 3-5 business days from the date of your request to prepare the product . Please note that we may not be able to prepare the product by the date of your visit, or we may have to decline your request depending on the situation.
In particular, if you make an inquiry after the event has started, it may be difficult to respond immediately, and there is a high possibility that we will not be able to accept your inquiry. We ask for your understanding and cooperation that we cannot guarantee that we will be able to accept your inquiry.
【please】
*If there are any changes to your application, such as a change in the date and time of your visit, or if you are unable to come on the day due to illness or other reasons, please contact our inquiry desk in advance.
*If you wish to change your visit time on the same day, there is no need to contact us in advance.
*As a general rule, we do not accept reservations for products at the "Caratz Store." Even if you have requested an item, it may be sold before you can view it.
If all of the items you requested have been sold, we will contact you.
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[About the auction listing agent and trade-in service]
We will be offering auction listing and trade-in services exclusively from Saturday, September 27th to Sunday, September 28th!!
Karaoku is a new service from KARATZ, in partnership with Aucnet, the operator of one of the world's largest dealer-to-dealer auction sites.
We will sell your jewelry at an auction attended by professional jewellery buyers from Japan and abroad, so you can expect to get a higher price than with general buying services.
*Some gemstones cannot be auctioned depending on their type and quality.
▶ For more information about Karaoke, click here
KARATZ can also trade in items that are difficult to put up for auction or items you wish to sell.
The trade-in amount will be given to you as a coupon that can be used at the event, and can be used to purchase products or for processing fees for custom-made jewelry.
<What is the trade-in service?>
Unlike purchase services where you pay in cash, trade-in is a service where you pay in the form of a coupon that can be used at events or at the "Karatts Store."
In exchange for using it to purchase products at Caratz, we will buy it at a higher price than we would buy it at.
If you are considering purchasing an item or creating custom jewelry, we recommend using our trade-in service.
*Please note that due to Shinjuku Marui Annex regulations, we are unable to offer a purchase service, so this time we will only be able to offer items for auction or trade-in.
*Trade-in jewelry and precious metals will be sold mainly to overseas business partners (jewelry dealers). They will not be sold at Caratz stores.
●Target items
Jewelry and metals of K9 or higher, Pt750 or higher *Broken earrings, broken necklaces, and earrings with only one earring are also eligible.
*Loose stones and raw stones are not included.
●Trade-in method
If you are interested, please contact the KARATZ staff.
● [Reference] Market price for purchasing precious metals
<As of Friday, September 5th>
Gold: 18,499 yen/g Platinum: 7,179 yen/g
*Prices are calculated based on the bullion market price on the day of the transaction (which fluctuates daily).
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💎Pop-up store visit benefits💎
Those who answer a simple online survey about which corner they were most satisfied with will receive a gift of jewels!
*Please choose one. You cannot choose.
💎Pop-up store purchase bonus💎
1. A shop card with a coupon that can be used at "Karats Store"
All purchasers will receive a SHOP card with coupons that can be used at the "Karats STORE" and at events starting the following day.
2. Jewelry lottery tickets that can be drawn according to the purchase amount of one transaction
You can draw one jewelry lottery ticket depending on the amount of your purchase in one transaction❗️
10,000 yen or more: Standard class jewelry lottery
Over 50,000 yen: Middle class jewelry lottery
Over 100,000 yen: High-class jewelry lottery
*In the high-class gem lottery, you can win Brazilian alexandrite, Paraiba tourmaline from Batalha, Brazil, pink diamonds, and more❗️
There are no losing tickets in either lottery. You are guaranteed to win some kind of jewel! Give it a try!
■Weekday-only lottery
If you purchase any products on weekdays from Monday, September 29th, you will be entered into a lottery to win original goods!
Weekdays (excluding the first day) from morning to evening tend to be relatively relaxed for viewing, so this is especially recommended for those who want to take their time to enjoy the jewels or consult about custom-made items.
After enjoying your shopping, try your luck with the weekday-only lottery! It's your chance to win some wonderful original goods.
*Excluding Thursday the 25th, Friday the 26th, and weekends.
💎Custom-made consultation corner
You can request a custom-made ring, pendant, or other item on the spot using the gemstone you select on the day.
This also applies to loose stones purchased from Caratz in the past and Shimizu Precious Stones. If you are considering purchasing, please bring them with you.
There are approximately 40 different design frames to choose from (*). You can also customize it by changing the side stones to colored diamonds, Paraiba tourmalines, alexandrites, etc., or by adding matte or engraving. Try placing it in the frame and expanding your imagination!
*Some frames have limited sizes and cuts.
*We do not accept jewelry purchased from other companies.
[Points to note when purchasing loose stones]
If you would like to have a custom-made piece made using a loose stone that you have previously purchased from Caratz or Shimizu Precious Stones, please be sure to read and understand the following points before bringing it in.
◎ Regarding products purchased in the past at Caratz
Please be sure to bring proof that you have previously purchased from Caratz.
<Example>
● Caratz Quality Assurance Certificate (formerly Caratz Appraisal Certificate)
- Something that shows your product purchase history (such as a screenshot of the purchase screen)
●Stickers that were attached to products during the event, etc.
If a stone breaks during the process of making custom-made jewelry from a product you purchased from us, we will provide full compensation (※) by refunding the cost or finding a replacement.
*Some gemstones may not be covered by compensation depending on the type and condition.
If we are unable to confirm that you have purchased a product from us in the past, we may refuse to accept your order, as it would be difficult to provide compensation.
Please note that we can also create products using bonus items that have been given away for free in the past, but we cannot provide compensation if the item breaks.
◎ Regarding products purchased directly from Shimizu Kiseki <br> For products that have been purchased directly from Shimizu Kiseki in the past, we cannot provide compensation if the product breaks during processing.
Please only bring it in if you are happy with this.
