OTAKARAYA offers high-value buybacks with over 1,690 stores worldwide.
Founded 25 years ago, we present 9 reasons why OTAKARAYA, Japan's industry leader, boasts high-value buybacks.
Visit a Specialized Purchase Store Otakaraya to Sell and Appraise Your
Emerald
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!
Emerald Reference Purchase Price
Last updated: 17/03/2026
| S | A | B | C | D | |
|---|---|---|---|---|---|
| 1カラット | 220,000 | 130,000 | 90,000 | 55,000 | 35,000 |
| 2カラット | 480,000 | 250,000 | 190,000 | 110,000 | 70,000 |
| 3カラット | 800,000 | 360,000 | 270,000 | 160,000 | 100,000 |
| 5カラット | 2,100,000 | 530,000 | 520,000 | 220,000 | 180,000 |
| 10カラット | 5,200,000 | 2,200,000 | 1,550,000 | 700,000 | 350,000 |
| S rank | A rank | B rank | C rank | D rank | |
|---|---|---|---|---|---|
| Colour | Deep color | Slightly deep | Normal | Light or Slightly dark | Very light or Quite dark |
| Clarity | No inclusions | Slight inclusions | Slightly cloudy transparency | No transparency | Quite cloudy |
- *The purchase price may vary depending on the condition of the item and the timing.
- *The ranking is based on our standards.
Reference Purchase Prices for Emerald
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.
*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.
Advice for High-Price Emerald Purchase and Appraisal
Gemstones degrade over time, so it is ideal to sell them as early as possible. Given the high market prices for gold and platinum right now, it is a good timing to sell accessories with gemstones. Emeralds tend to have relatively more inclusions, and their value can vary greatly depending on the inclusions. To avoid missing out on their true value, it is important to choose a purchase store with expert knowledge.
Factors that Determine the Value of Emeralds
Color
Emeralds, cherished as green gemstones for centuries, have their value primarily determined by color. Emeralds are a variety of the mineral beryl, with beryllium (Be) as its main component, and exhibit their beautiful green color due to chromium and vanadium. The most highly valued emeralds feature a vivid bluish-green to pure green color, with an even tone being considered the finest. The deeper the color, the higher the evaluation, but stones that appear too dark, almost black, may be valued lower.
Clarity
Emeralds are gemstones that almost always contain inclusions. Therefore, those with fewer inclusions and higher transparency are rare and valuable. An exception to this is the Colombian "Trapiche Emerald," which features a unique crystal pattern. In this case, the inclusions themselves are considered part of the charm and are traded at high prices.
Carat
The value of an emerald increases with its size, but it is important that other factors such as color and transparency are also well balanced. For example, even if an emerald is large, if it has a pale color or low transparency, it may be valued lower than a smaller emerald with a rich color and high transparency.
Cut
he emerald-specific cut, known as the "emerald cut," was developed considering the gemstone's fragility, helping to prevent pressure and breakage from external forces. To fully bring out the depth of the emerald's color and the characteristics of its crystals, the craftsmanship of skilled artisans is required. The higher the quality of the cut, the higher the value of the gemstone.
Treatment
Emeralds commonly undergo treatment with colorless oil or colorless resin to reduce the visibility of cracks and inclusions. This treatment is believed to enhance the gemstone's natural beauty. However, emeralds altered with colored oil or glass have significantly reduced value. Emeralds with few inclusions and no treatment are extremely rare and highly priced, but caution is needed as there are also low-quality untreated emeralds that are marketed as untreated.
Major Sources of Emeralds
The highest quality emeralds are famously mined in Colombia. Colombian emeralds have a beautiful green color with a slight bluish tint, and high-quality ones may feature a unique pattern known as "Gota de Aceite" (Italian for "oil drop"). Other major sources of emeralds include Zambia, Zimbabwe, Brazil, and Madagascar, each with its own distinct characteristics, but Colombian emeralds are particularly highly regarded.
The criteria for evaluating emeralds?
About the quality evaluation of emeralds.
Emeralds are evaluated based on a comprehensive assessment of color, transparency, inclusions, and cut shape. Among these factors, color has the most significant impact on the quality of the emerald, with deeper green shades being more highly valued. Additionally, emeralds with fewer inclusions and a well-executed emerald cut that enhances the color are more likely to fetch a higher price.
About emeralds treatments and processing.
Emeralds are gemstones that are prone to scratching, so many of the emeralds in circulation undergo impregnation treatment to enhance their transparency. Emeralds that have not been treated are referred to as "Non-Oil Emeralds" and are extremely rare, often traded at high prices.
About the origin of emeralds.
Colombia is a representative source of emeralds, and it is said that more than half of the emeralds in circulation worldwide are mined in Colombia. Colombian emeralds are known for their high color quality and transparency, and they are of superior quality with strong brand recognition. When selling Colombian emeralds, it is advisable to have a certificate of authenticity that indicates the origin.
Color of Emeralds with High Price Purchase Evaluation
Deep Green Colombian Emeralds
The deep green color, characteristic of high-quality and luxurious emeralds, is a mark of distinction. Emeralds mined in Colombia, particularly from the Muzo and Chivor mines, are considered top-tier and are traded at high prices.
Yellowish Zimbabwean Emeralds
The emeralds from Zimbabwe, also known as "Sandawana Emeralds," have a vivid deep green color with a unique yellowish tint. Many of these emeralds have few scratches and are not subjected to impregnation treatment.
Bluish Green Zambian Emeralds
Zambian emeralds have few inclusions, with a uniform color and exceptional beauty. They also have high transparency, and their color is a bluish-green. In recent years, the popularity of Zambian emeralds has increased, and their overall price has been rising.
Visit a Specialized Purchase Store Otakaraya
to Sell and Appraise Your Emerald
Visit Otakaraya to Sell Your Jewelry
01 The staff includes holders of the GG (Graduate Gemologist) qualification.
The GG (Graduate Gemologist) qualification is a prestigious gemologist certification awarded by the Gemological Institute of America (GIA), recognized globally as one of the most authoritative credentials. At Otakaraya, we have staff members who hold the GG qualification, and we also provide regular gemologist training through our in-house educational program. As a result, we are capable of performing highly accurate and high-level assessments of all types of gemstones.
Rika Iwamatsu
Profile
：Started working at a gemological laboratory and has been involved in diamond grading and gemstone identification for nearly 30 years.
Qualifications：GG (Graduate Gemologist) - obtained in May 1994
Hometown：Tokyo
Hobbies：Traveling
02 Latest appraisal equipment of Otakaraya
UV-Visible Near-Infrared Spectrophotometer
When visible light (light that can be seen by the human eye) passes through a substance, some of the light is absorbed by the material. The UV-Visible Near-Infrared Spectrophotometer is excellent at analyzing the wavelengths of the absorbed light. At 'Otakaraya,' this instrument is used to inspect treatments applied to diamonds and the treatments on gold-based white pearls, allowing for accurate assessment of the gem's value.
Fourier Transform Infrared Spectrophotometer
The Fourier Transform Infrared Spectrophotometer is a precision instrument that analyzes samples by shining infrared light onto them and measuring the transmitted or reflected light. At 'Otakaraya,' this equipment is used for a wide range of tests, including examining the presence of resin impregnation treatments in jade and conducting specific tests on diamonds.
Type I and Type II Determiner
The sample is placed inside the determiner, and ultraviolet light is applied to assess the diamond by its transmission rate. In just one second, the device can determine whether the diamond is Type I (natural diamond) or Type II (high-temperature, high-pressure treated diamond or synthetic diamond). The device can assess both loose diamonds and diamonds set in a setting, allowing for measurement without removing the stone from the setting. It provides quick and accurate evaluation without damaging your items.
Moissanite Determiner
After cleaning the surface of the gemstone, the probe is applied to the sample. The electrical conductivity measured by the device is used to determine whether the stone is a diamond or moissanite. Similar to the Type I and II determiner, it provides instant and accurate assessments.
03 Evaluation of Design and Brand Value
At Otakaraya, we not only assess the intrinsic value of the gemstones themselves but also take into account the brand value and design when determining the appraisal value. We ensure that even small gemstones are thoroughly evaluated, and we can offer a purchase regardless of whether the item has accessories or a box.
04 All Fees Are Free for Purchase
Appraisal fee is completely free, with no burden placed on the customer. We offer a variety of purchasing methods, including, in-store, and email appraisals.
05 Network of Over 1,690 Stores Worldwide
A boasts over 1,690 stores worldwide, the largest number among purchasing stores. If you bring your item to a nearby Otakaraya store, you can receive immediate cash payment. Additionally, Otakaraya has a proven track record of transactions with 44 countries worldwide, handling large-scale transactions not only with individuals but also with corporations and businesses. In addition to diamonds, Otakaraya also purchases a wide range of gemstones, including rubies, sapphires, and more.
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!
About Emerald Certificates
Certificate of Authenticity / Certificate of Origin
When purchasing an emerald, a certificate of origin and type, which indicates the origin and nature of the stone, is usually provided. If you have this certificate, please bring it along when selling the gemstone. However, at Otakaraya, we accept purchases even without a certificate of authenticity or origin, so there is no need to request a reissuance.
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- 1 Report Number
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A unique identification number for each certificate.
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- 2 Shape
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Gem Shape
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- 3 Cutting
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Cut Shape
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- 4 Color and Transparency
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Details the quality of the gemstone's color and transparency.
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- 5 Colour
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Lists the color grade
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- 6 Mineral Name
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Lists the name of the mineral.
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- 7 Gemstone Name
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Specifies the name of the gemstone.
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- 8 Treatment
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Note on Treatment
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- 9 Origin
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Lists the gemstone’s origin or place of mining.
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- 10 Item
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Information about the metal and gemstones
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- 11 Weight
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Weight information
-
- 12 Size
-
Dimensions listed in millimeters
-
- 13 Remarks
-
Other important information to be included in the certificate
Emerald Ring
Emerald Necklace
Emerald Bracelet
Emerald Earrings
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
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!
Introduction of Appraisers
Iwamatsu
-
Hobbies
Travel
-
Favorite phrase
Actions speak louder than words
-
Favorite brand
Diamonds and Jewelry
-
Past purchase examples
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.
9 Reasons for Emerald High-Value Buybacks
01
Professional valuation that understands value
We have know-how accumulated through 25 years of history!
02
A dedicated buyback shop
Achieving high-value buybacks in countries around the world!
03
Over 1,690 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!
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!
Search from OTAKARAYA's Purchase Items
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Types of Gems & Jewellery We Can Buy at OTAKARAYA
Search by Gemstone and Colored Stone
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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 Emerald 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.
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!
