Every day, we purchase numerous Gemstones / Jewelry, and we introduce one carefully selected item daily.
Visit a Specialized Purchase Store Otakaraya to Sell and Appraise Your
Gemstones / Jewellery
Jewels Currently Under Priority Purchase
Would you like to know
the value of your gemstones?
the value of your gemstones?
Free appraisal
by "Otakaraya"
by "Otakaraya"
the high-price
purchase
professionals.
purchase
professionals.
Available 24/7 for free!
Get an appraisal with just one photo!
Consultations are very welcome!
Get an appraisal with just one photo!
Consultations are very welcome!
Reference Purchase Prices for Gemstones / Jewellery
The reference buyback prices mentioned above fluctuate based on timing and market conditions.
Furthermore, prices vary depending on the shape/form of the item. Please contact us by phone for detailed inquiries.
diamond
emerald
ruby
sapphire
*Images are for illustrative purposes only.
*Reference purchase price applies only when the hallmarked purity matches the specific gravity reading.
*Reference purchase price applies only when the hallmarked purity matches the specific gravity reading.
*Images are for illustrative purposes only.
*Reference purchase price applies only when the hallmarked purity matches the specific gravity reading.
*Reference purchase price applies only when the hallmarked purity matches the specific gravity reading.
*Images are for illustrative purposes only.
*Reference purchase price applies only when the hallmarked purity matches the specific gravity reading.
*Reference purchase price applies only when the hallmarked purity matches the specific gravity reading.
*Images are for illustrative purposes only.
*Reference purchase price applies only when the hallmarked purity matches the specific gravity reading.
*Reference purchase price applies only when the hallmarked purity matches the specific gravity reading.
The Latest Gemstones / Jewelry Purchase Items
Purchase Date: 28/05/2026
Harry Winston Sunflower Necklace
- Condition
- A
- Detail
- Clean
- Store
- LUCKY PLAZA（Orchard Rd）
Purchase Date: 26/03/2026
BVLGARI Serpenti Viper Necklace Ruby
- Condition
- A
- Detail
- Clean
- Store
- Orchard Far East Plaza
Purchase Date: 05/03/2026
Chopard Happy Diamonds
- Condition
- A
- Detail
- Clean
- Store
- Orchard Far East Plaza
Purchase Date: 08/01/2026
Harry Winston Diamond Earring
- Condition
- A
- Detail
- Clean
- Store
- Orchard Far East Plaza
Purchase Date: 25/12/2025
Harry Winston Diamond Earring
- Condition
- A
- Detail
- Clean
- Store
- Orchard Far East Plaza
Purchase Date: 25/12/2025
Harry Winston Diamond Necklace
- Condition
- A
- Detail
- Clean
- Store
- Orchard Far East Plaza
Purchase Date: 04/12/2025
Harry Winston Lotus Cluster Diamond Pendant
- Condition
- A
- Detail
- Clean
- Store
- Orchard Far East Plaza
Purchase Date: 21/10/2025
BVLGARI Divas' Dream Necklace Malachite
- Condition
- A
- Detail
- Clean
- Store
- Orchard Far East Plaza
Gemstones / Jewelry Condition Guide
| S Very Clean | A condition with a high rating in factors such as the 4Cs. |
|---|---|
| A Clean | A condition with a high rating in factors such as the 4Cs. |
| B Some signs of use | A condition where inclusions or scratches are visible. |
| C Significant signs of use | A condition where inclusions or scratches are quite noticeable. |
9 Reasons for Gemstones / Jewellery High-Value Buybacks
OTAKARAYA offers high-value buybacks with over 1,820 stores worldwide.
Founded 26 years ago, we present 9 reasons why OTAKARAYA, Japan's industry leader, boasts high-value buybacks.
01
Professional valuation that understands value
We have know-how accumulated through 26 years of history!
02
A dedicated buyback shop
Achieving high-value buybacks in countries around the world!
03
Over 1,820 stores!
Buyback know-how from around the world is concentrated in each store!
04
Transaction records with countries around the world
With business partners in each country, OTAKARAYA can set buyback prices on a global standard!
05
Wide range of buyback items
Even items you wonder if you can sell can be bought back at a high value without missing their true worth!
06
The highest level of valuation environment
Discerning true value, we can present the buyback amount to customers!
07
Same-day cash buyback
Even for high-value transactions, we can provide cash on the spot!
*In some cases, payment may be made by same-day bank transfer instead of cash.
08
High-value buyback campaign
We pursue high-value buybacks that satisfy our customers!
09
Cost reduction through in-house auctions
By keeping sales costs down, we can set higher buyback amounts!
Would you like to know
the value of your gemstones?
the value of your gemstones?
Free appraisal
by "Otakaraya"
by "Otakaraya"
the high-price
purchase
professionals.
purchase
professionals.
Available 24/7 for free!
Get an appraisal with just one photo!
Consultations are very welcome!
Get an appraisal with just one photo!
Consultations are very welcome!
Visit a Specialized Purchase Store Otakaraya to Sell Your Gemstones / Jewellery
Do you have unused gemstones or jewelry lying dormant? It's a waste to leave them unused just because of reasons like "old design" or "scratches." At "Otakaraya," we offer high-price purchases even for broken jewelry or old designs. We purchase not only diamonds but also color stones like sapphires, rubies, and emeralds. You can also bring in loose stones (gems only), and our professional appraisers will assess their quality and grade. Whether it's a ring that no longer fits, a necklace that's broken, or jewelry that has become dirty over time, we can still make an offer. We will provide an estimate after evaluating the items, so feel free to bring them in. At "Otakaraya," we have specialists in diamond and gemstone purchasing, including a GIA G.G. certified appraiser, so you can bring your items in with confidence. If you want to sell your gemstones or jewelry for the best price, please visit us by all means.
Points for Gemstone and Jewelry Purchase
Gemstones are a limited resource created by nature, and their prices are highly influenced not only by their size and grade but also by factors such as market supply and circulation. As a result, some dealers may try to offer low purchase prices in order to maximize their profits. However, at Otarakaya, we have established stable sales channels, enabling us to buy high and sell high. Even if you were unsatisfied with other dealers' appraisals, we are confident that we can offer you a price that meets your expectations.
About Diamond Certificates
-
- 1 Cut & Shape
-
The diamond's external shape and facet arrangement are described.
-
- 2 Weight (Carat)
-
The weight is evaluated as 1 carat = 0.2g (200mg).
-
- 3 Color Grade
-
The diamond's color intensity is evaluated using GIA Master Stones (JJA/AGL certified) on a scale from D to Z.
-
- 4 Clarity Grade
-
The diamond's inclusions—quantity, size, color, and location—are evaluated using grades such as FL, IF, VVS1VVS2, VS1VS2, SI1SI2, and I1I3.
-
- 5 Cut Grade
-
The cut is evaluated through the GIA Facetware Cut Estimator database and visual assessment with grades ranging from Excellent, Very Good, Good, Fair, to Poor.
-
- 6 Fluorescence
-
The color and intensity of fluorescence are evaluated using a fluorescence master stone with grades from None, Faint, Medium, Strong, to Very Strong.
ANY CONDITION!
Don't give up just because
it's
"BROKEN," "DIRTY" or "OLD"!
OTAKARAYA enchancing purchase offers
for Gemstones / Jewelry in any condition!
for PURCHASE!
We accept items
even if accessories such as
appraisal or authenticity
certificates are not included.
Cracks
Prominent
Scratches
Loose stones
Engraved
initials and dates
Customer reviews
regarding Jewelry buyback
Introducing feedback from customers who used our service.
-
Jewelry Buyback
#JewelryThank you for going through my appointment with me today! I received fair quotations for the pieces that I wanted to sell. The staff even helped me to ask for a higher price for my old jewellery
-
Jewelry Buyback
#JewelryThey have been most helpful when i needed to sell my jewelry.
-
Jewelry Buyback
#JewelryI had a white gold ring with blue sapphire and diamond that I bought 20 years ago in Hong Kong exhibition. I decided to sell it off and found this special shop assistant that I met her the very 1st time.
I am very comfortable with her professional attitude n patience with the evaluation of my ring. Even though I paid a high price when 8 bought it, but I am ok to sell to her as I am happy with her good service 🐕🦺.
Strongly recommend to any potential sellers who want to let go their precious stone or watches with this company. Thanks again for a wonderful job -
Jewelry Buyback
#JewelryIt is not only a shop for business, they understand the value of the brand . Thanks
-
Jewelry Buyback
#JewelryThey have very friendly, approachable staff and made my husband and I feel comfortable throughout the entire transaction. Everything was seamless and fast! Would definitely recommend this service to anyone who’s thinking of selling their jewellery here ◡̈
-
Jewelry Buyback
#JewelryHad a first visit and a very pleasant experience at Otakaraya. The staff helped me was very welcoming, warming kind and well spoken.
Since it was my first time here for appraisal, he explained everything in detailed to me and also managed to get me the best prices for my jewelery!
Very happy to be assisted by him. -
Jewelry Buyback
#JewelryVery professional and pleasant experience, the staff who helped me was very patient and knowledgeable with the service he was providing . He explained in depth regarding my rings .
-
Jewelry Buyback
#JewelryI sold my bag and Jewelry here . The staff is very friendly and enthusiastic, professional attitude and patient.
-
Jewelry Buyback
#JewelrySold my ring here. The appraiser is very helpful and friendly. Pleasant transaction. Thank you!
-
Jewelry Buyback
#JewelryIt is a very enjoyable experience selling bags and jewelleries to Otakaraya. The staff is very friendly, patient and professional. And the quoted price are good!
*
The above reviews are actual Google reviews received at OTAKARAYA stores.
A Message from Our Appraiser
Thank you very much for choosing OTAKARAYA for your gemstone appraisal and purchase service.
We are delighted that we were able to offer a price that met your expectations for an item you have treasured over the years.
Gemstones are more than simple accessories. They are unique treasures formed by the Earth over millions of years, each with its own beauty and rarity. Their value is determined by the internationally recognised standards known as the “4Cs”: Carat, Color, Clarity and Cut.
At OTAKARAYA, our team includes certified gemologists holding the G.G. (Graduate Gemologist) qualification from the Gemological Institute of America (GIA). Drawing on their expertise and carefully monitoring current market conditions, we strive to provide fair and competitive appraisal prices for every gemstone.
Gemstones such as diamonds, rubies, sapphires and emeralds each have their own evaluation standards and internationally recognised gemological laboratories. Grading reports and certificates issued by these organisations serve as important proof of authenticity and can significantly influence a gemstone’s value.
We carefully examine every aspect of your gemstone, including its quality, rarity and condition, in order to provide an appraisal price you can feel confident about. Being able to deliver a satisfying result for our customers is always our greatest motivation.
We will continue working to improve our services while maintaining the trust our customers place in us. In addition to gemstones, we also appraise precious metals, luxury brand items and watches, so please feel free to visit OTAKARAYA whenever you are considering selling your valuables.
Our team remains committed to providing professional service and fair appraisal prices for every item entrusted to us. Thank you once again for choosing OTAKARAYA. We sincerely look forward to serving you again in the future.
Gemstones / Jewelry Appraisals at OTAKARAYA
Hobbies
Travel
Favorite motto
Actions speak louder than words
Favorite brand
Diamonds and Jewelry
Examples of past buyback items
10-carat Diamond
At OTAKARAYA, we assess hundreds of gemstones every day, both large and small. The value of gemstones can fluctuate greatly depending on various factors such as the 4Cs of diamonds, color, shape, weight, and fluorescence. OTAKARAYA holds its own auctions, allowing us to respond quickly and sensitively to daily gemstone demand. Regarding assessments, we have professional staff and specialized tools such as diamond testers, enabling accurate evaluations at our stores worldwide If you're interested in any items, please feel free to use OTAKARAYA's services.
Search from OTAKARAYA's Purchase Items
Gold Purchase
Platinum Purchase
Diamond / Jewellery
Purchase
Brand Watch Purchase
Brand Item Purchase
Types of Gems & Jewellery We Can Buy at OTAKARAYA
Search by Gemstone and Colored Stone
Search by Jewelry Brand Name
Browse by Gold & Precious Metal Purchase Items
Would you like to know
the value of your gemstones?
the value of your gemstones?
Free appraisal
by "Otakaraya"
by "Otakaraya"
the high-price
purchase
professionals.
purchase
professionals.
Available 24/7 for free!
Get an appraisal with just one photo!
Consultations are very welcome!
Get an appraisal with just one photo!
Consultations are very welcome!
Frequently Asked Questions
about Gemstones / Jewellery Purchase
When is the best time to sell diamonds?
The best time to sell diamonds can vary. Sometimes, the right opportunity arises quickly, while at other times, holding onto them for a longer period can increase their value. It is difficult to pinpoint a universally ideal time. If you plan to keep your diamonds for a longer duration before selling, it is essential to store them properly. We recommend using appropriate storage methods and performing regular maintenance to preserve their condition.
Can I sell diamonds without a certificate?
Yes, you can. Our appraisers will evaluate the diamond 4Cs (Carat, Color, Clarity, and Cut) and provide you with a purchase price.
Does the design affect the purchase price?
For gemstone purchases, the grade of the diamond itself is crucial. Even with an older design, Otakaraya ensures a high-value purchase, so you can rest assured.
Does the shape of the diamond affect the purchase price?
Yes, the purchase price varies by shape. The "round brilliant cut" is the most highly valued cut for diamonds. The purchase price also changes depending on the diamond's grade, so feel free to take advantage of our free appraisal service.
Do specialty gemstone purchase shops offer higher prices?
At Otakaraya, we handle a wide range of items, including diamonds, gemstones, jewelry, gold, precious metals, branded items, and watches. This extensive sales network allows us to avoid holding excess inventory, enabling us to offer the highest possible prices for your items.
Can melee diamonds (pavé diamonds) be purchased?
Yes, they can be purchased. Jewelry adorned with melee diamonds (pavé diamonds) may receive a higher appraisal value. However, loose stones may not be eligible for purchase.
