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Gubelin Gem Lab Report

Dr. Eduard J.GubelinDr. Eduard J. Gubelin, one of the forefathers of modern gemology, and who were a Founding Organizing Member as well as an Honorary Member of the International Colored Gemstone Association (ICA), passed away in Lucerne, Switzerland in March at the age of 91. Dr. Gubelin was the grandfather of ICA Director Edward Boehm.Dr. Gubelin joined his father's - Eduard Gubelin Sr - gems ad jeweler business during the first quarter of the twentieth century and was soon directed toward gemology as his father established a state-of-the-art gemological laboratory in Lucerne.

Gubelin himself became well known throughout the world for his tremendous research and work in gemology. He was the author of numerous publications, spanning many decades, including the classic Internal World of Gemstones: Documents from Space & Time (1974), which showed how the direct source of gemstones might be identified by their inclusions. Today, the Gubelin Gem Lab in Lucerne continues to be one of the best-known, prestigious gemological laboratories.

The Gübelin Gem Lab additionally provides a number of specialized services which pay attention to our client’s individual needs. For more information please contact the Laboratory Special services include: Express service Appendix page Note page Special report Off-premise testing.

Emerald mined in PakistanGubelin Gem Lab Issues Statement on Swat Valley Emeralds :

There have been various reports in the media recently about emeralds from Pakistan. Emeralds have been mined in the region around the town of Mingora on the Swat River since the 1960s, and some of thesegems also come onto the international market.

EmeraldsReportedly, in recent weeks the Islamist fundamentalist Taliban has gained control of the Swat Valley in northern Pakistan, close to the border with Afghanistan. As a result of the Taliban seizing control, these reports now assume that the proceeds from the sale of emeralds now fall into the hands of the Taliban and will therefore be used to finance its activities.

EmeraldsVarious states and nongovernmental organizations (NGOs) have long deplored the way in which the Taliban has failed to observe basic human rights, including freedom of opinion and women’s rights. Some of these organizations demand that the trade in emeralds from the Swat valley be stopped on moral grounds. There are also calls for greater transparency regarding the provenance of traded emeralds.


Colored Stones :

Authenticity and Origin Determination of Select Natural Gemstones



Ruby

Sapphire, Emerald

Select Colored Gemstones

Authenticity Fee

Authenticity Fee + Origin Fee

* up to 1.99 ct2

* up to 1.99 ct2

* up to 1.99 ct2

CHF 170 (Special tariff)

CHF 250 (Special tariff)

2.00-3.99 ct

2.00-7.99 ct

2.00-6.99 ct

 CHF 345 

CHF  690

4.00-7.99 ct

8.00-14.99 ct

7.00-11.99 ct

CHF 430

CHF  860

8.00-14.99 ct

15.00-24.99 ct

12.00-19.99 ct

CHF 540

CHF 1080

15.00-24.99 ct

25.00-49.99 c

t

20.00-39.99 ct

CHF 700

CHF 1400

25.00-39.99 ct

50.00-99.99 ct

40.00 ct and over

CHF 875

CHF 1750

40.00 ct and over

100.00 ct and over

Nill

CHF 1100

CHF 2200



Identification of other Natural, Synthetic and Imitation Stones :

Minimum fee per stone CHF 165 + CHF 25 per full 5 cts.



Where special analyses and/or special reports are required, see section D.



Diamonds :

Gubelin Diamond Certificate :



Gubelin diamond certificate

Commercial Diamonds :

Authenticity verification and quality grading of unmounted diamonds, applying the GIA system Basic fee.


Diamond

Fee

(Report & Type Note)

up to 2.99 ct

CHF 360

3.00 - 4.99 ct

CHF 480

5.00 - 6.99 ct

CHF 650

7.00 - 9.99 ct

CHF 850

10.00 - 14.99 ct

CHF 1125

15.00 - 19.99 ct

CHF 1470

20.00 - 29.99 ct

CHF 1900

30.00 - 49.99 ct

CHF 2450

50.00 - 79.99 ct

CHF 3100

80.00 - 119.99 ct

CHF 3900

120.00 ct and over

CHF 4800

Fancy Colour Diamonds :

Colour grading and identification of colour origin (not including clarity grading) Basic fee.

Clarity grading, if requested    + CHF 100



Low-temperature analysis, if required  + CHF 250



Follow-up grading of repolished diamonds  50% of basic fee 



Diamond Type Note :

Diamond Type Notes (excl. Report) are also available for diamonds up to 5 ct according
to the following table:



For diamonds over 5 ct please contact us.



Diamond

Type Note Fee

up to 1.99 ct

CHF 200

2.00 - 4.99 ct

CHF 300

Pearls :

Identification by optical analysis and X-radiography



Single pearl (loose)



Single strand / one-row necklace



Each additional row



Average Pearl Measurement :

< 8 mm

8 - 12 mm

> 12 mm

CHF  150v

CHF  200

CHF  250

CHF  400

CHF  500

CHF  600

CHF  200

CHF  250

CHF  300

Miscellaneous :

If required, the services listed below may be carried out by Gubelin Ateliers AG specialists or independent specialized companies, however, only upon the customer's written request and at his/her expense and risk. Please enquire with the Gubelin Gem Lab for details.

Unmounting of gemstones and pearls



Re-/mounting of gemstones and pearls



Restringing of pearls



Repolishing of diamonds, colored stones, etc.

No appraisals are issued by Gubelin Gem Lab Ltd.

NOVEMBER BIRTHSTONE - CITRINE


Citrine Gemstone

COMMEMORATIVE EVENT - 13th Anniversary
KEYWORDS - Success, Abundance, Personal Power
ALSO KNOWN AS - Merchant's stone, Success stone
COLORS - Pale yellow to brown
OCCURRENCE - Brazil
COLOR ZONING - Tiger stripes or Zebra stripes

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