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[Shinjuku Marui Annex 2F] Pop-up store announcement [December 19th (Fri) - 25th (Thu)]

Product Request Form


The final pop-up store of the year will be held in December in Shinjuku, Tokyo!

In addition to our original jewelry, we have a large selection of gemstones that KARATZ has collected from all over the world, including famous gemstones such as the world's five major gemstones (diamond, ruby, sapphire, emerald, and alexandrite), Paraiba tourmaline, birthstones for each month, beautiful loose gemstones cut by skilled craftsmen both in Japan and overseas, and rare stones that you don't usually see. We look forward to your visit.
We also carry non-gemstone products such as tools like penlights and magnifying glasses, and raw stone polishing sets.

This is a rare opportunity to see KARATZ jewelry up close and purchase it, which is normally only available through online stores!
You can compare multiple stones, look inside with a magnifying glass, and check the fine details.
We also have tools available for rent, so even if you don't have your own, feel free to come visit us. We have staff with extensive knowledge of jewelry on hand, so please feel free to ask any questions you may have.

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!

Caratz Pop-Up Event

Photo: The event was held in Shinjuku in June 2013


~Shinjuku Marui Annex Pop-up Store~

■Period: December 19th (Friday) to December 25th (Thursday), 2025
■Store: Shinjuku Marui Annex 2F Calendarium
(3-1-26 Shinjuku, Shinjuku-ku, Tokyo)
■Products: Gemstones, rare stones, jewelry, custom-made consultations ■Business hours: Weekdays 11:00-20:00, Saturdays and Sundays 10:30-20:00 * Scheduled to close at 17:30 on the 25th (Thurs)

*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 (December 25th).

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

Carats Original Jewelry

We have a variety of designs, including new arrivals, ranging from casual to gorgeous.
If you order ready-made jewelry and it fits, you can take it home on the same day.
How about celebrating Christmas with some new jewelry?


This ring uses tanzanite, one of the December birthstones, as its center stone.
The color is a little light, so it will go well with any outfit and can be used daily!

Lavender Tanzanite Ring

Frame name: Allegro
Center stone: Lavender Tanzanite Side stones: Diamonds Metal: 18K Yellow Gold

These two Christmas-colored rings are made using the same frame and feature ruby ​​and emerald. They are carefully selected for their vibrant colors, so they are sure to add a touch of glamour to your fingers! They are also recommended for stacking.

Emerald and ruby ​​ring


【above】
Frame name: Andromedaring Center stone: Ruby Side stones: Ruby Metal: 18K Yellow Gold

【under】
Frame name: Andromeda Ring Center stone: Emerald Side stones: Emerald Metal: 18K Yellow Gold

Next, we will introduce two rings that use bright green gemstones. The top ring uses a Russian demantoid garnet as the center stone, and the bottom ring uses a peridot. They emit a gentle, soft glow that is not overpowered by the gold base metal.

Russian Demantoid Garnet and Peridot Ring

【above】
Frame name: Round Komodo Center stone: Russian demantoid garnet Side stones: diamonds, green garnet, Bekiri blue garnet Metal: 18K yellow gold

【under】
Frame name: Staccato
Center stone: Peridot Side stones: Diamond Metal: 18K Yellow Gold

The last piece is a ring made with a flower motif. A vibrant pink spinel flower is adorned with Russian demantoid garnet leaves. It will continue to bloom all year round, so it will help you get through the cold winter with a cheerful feeling.



Frame name: Fleur
Center stone: Russian demantoid garnet Side stones: Pink spinel Metal: 18K yellow gold



💎Custom-made consultation corner



Our custom-made consultation session is always a big hit. We can create jewelry using the gemstones you select on the day or gemstones you have previously purchased from 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 a pop-up store, you can place your items in frames on the spot, so you can compare the images in multiple frames and let your imagination run wild!
*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

Cornflower blue sapphire loose stone

This corner features the world's five great gemstones: diamonds , rubies , sapphires , and emeralds , which have been loved all over the world since ancient times, plus alexandrite , named after a Russian emperor.
If you are looking for something a little better, please feel free to ask our staff.

Pink diamond loose

Pink Diamond


Star Ruby Loose

Star Ruby


Oil-free emerald loose stone

Oil-free emerald


Alexandrite loose stone

alexandrite



💎 Paraiba Tourmaline Special

Paraiba tourmaline loose stone

Paraiba tourmaline has beautiful neon-like blue-green hues . Its color range is quite wide, and even if they look the same at first glance, you can see the differences when you compare them. I plan to bring stones from Brazil and Mozambique, the two main sources of Paraiba tourmaline. Compare the different stones and find your favorite one.

Paraiba tourmaline loose stone



💎Birthstone Corner

Tanzanite loose stone

This is a corner that collects the birthstones for each month .

We will be offering a slightly expanded selection of birthstones for the month of the event, December (※), and the following month, January.

From well-known gemstones that have been mined since ancient times to those that have recently been added to the list of birthstones, be sure to compare the differences that can be found within the same gemstone species depending on their color, type, and cut.
It is also a perfect gift for family and loved ones. If you are unsure how to find it, please feel free to ask our staff. *The December birthstones are mainly tanzanite and zircon.

Tanzanite loose stone

Tanzanite ( December birthstone )

Pink Zircon Loose Stone

Pink Zircon ( December birthstone )

Blue Zircon Loose Stone

Blue Zircon ( December birthstone )

Almandine Garnet Loose

Almandine Garnet ( January Birthstone )


Rhodolite Garnet Loose Stone

Rhodolite Garnet ( January Birthstone )


Mint Garnet Loose Stone

Mint Garnet ( January birthstone )

Hessonite Garnet Loose Stone

Hessonite Garnet ( January birthstone )



💎Sanjae's Cut Corner

Sphene loose stone

This is the corner of Sanjay, a skilled polisher from Sri Lanka.

How well a gemstone's potential is brought out depends on the skill of the polisher. Try comparing different types to see how advanced techniques can change the brilliance of the gemstone.
This is especially evident in gemstones with many facets.


Iolite Sunstone Loose

Iolite Sunstone


Pink spinel loose stone

Pink Spinel


Purple sapphire, pink sapphire, loose sapphire

sapphire


Indigolite Tourmaline Loose Stone

Indicolite Tourmaline


Synthetic rutile loose stone

Synthetic rutile



💎Staff Choice Corner

Zimbabwean Bicolor Euclase Loose Stone

This corner features a collection of gemstones recommended by our staff.

There are many fascinating gemstones in the world that are not well known to the general public.
We will be bringing you mainly quartz and rare stones. Be sure to check out this corner.


Pink Zoisite Loose Stone

Pink Zoisite

💎Overseas Purchase Corner

This is a corner for jewels purchased overseas, including from Thailand and China.


💎Specialty & Skillful Cutting Corner

This corner features a collection of skillfully cut gemstones made by skilled artisans both in Japan and abroad. Not only are they highly skilled, but many of the cuts offer originality. They also make a great gift for those who love unusual items.



💎Great Value! Semi-Order Set

Semi-order set

This section is especially recommended for those who want to create custom-made jewelry at a good price, those who are ordering custom-made jewelry for the first time, and those who are thinking of buying a gift and don't know what kind of gemstone to choose.
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]

Product Request Form

The products sold at the pop-up store are mainly carefully selected for the event, and in most cases, products currently on sale at the Caratz Store will not be available at the venue.

For customers who would like to see the products on sale at Caratz Store in person and purchase them,
Please apply by Thursday, December 11th using the form below .
Product request application form

*Once the deadline has passed, you will no longer be able to enter any information into the form.
* We accept requests for up to 3 items per person .
*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. Please be aware of this before applying.

* There is no need to request products that are being introduced on this page or on social media as items for sale at the event. Please come directly to the venue.

*Even if the deadline has passed, please contact us through the " Caratz Store Inquiry Center " and we will do our best to assist you.

However, it usually takes 3 to 5 business days to prepare the product, so depending on the timing of your request, we may not be able to have the product ready by the day you 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 in advance.



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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 December 19th (Friday) to 21st (Sunday)!!
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 Tuesday, December 2nd>
Gold: 23,120 yen/g Platinum: 8,995 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❗️

Over 10,000 yen: A jewelry lottery with diamonds, sapphires, and more
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

Weekday lottery banner

If you purchase any products on weekdays from Monday, December 22nd, 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 Friday the 19th 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.