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Gemstone Consignment Auction #5 Closed (#19788200)

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3.74 ct Natural Oregon Sunstone Gemstone ($2,245 Appraisal)

Oval Cut - Includes Appraisal Certificate

  Lot # TK092
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TKAuctions   11
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Lot # TK092
System ID # 19834319
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3.74 ct Natural Oregon Sunstone Gemstone - (Appraisal - $2,245)

Oval Cut

Gemstone: Natural Oregon Sunstone

Size:  11.74 x 8.84 x 6.43mm


Appraisal from Karaman in Downtown Toronto


From a gemologist Collection



About Sunstone

Although the common color of Oregon Sunstone is straw-yellow, it also can be pink, peach, red, salmon red-orange, red-green, and blue green. It also can be bi-colored and tri-coloured in combinations of yellow, red, and green, and a small percentage is di- and tri-chroic. Oregon Red Sunstone differs from Sunstones found in other worldwide locales in color, a strong pleochroism, showing multiple colors in a single stone. The loose gem is found with copper in it which is the cause for the range of colors in the stone from water color to yellow and many shades of green, red and pink.


Sunstone gems from Oregon in the USA are very rare and unique in that they offer the shiller effect due to inclusions of copper, while the sunstone from India and other locations is due to inclusions of hematite. There is a signification difference in value of the two types as the Oregon Sunstone with copper inclusions is far rarer and more valuable.



More On Appraisal Certificates

Appraisal Certificates are done from accredited appraisers and represent the retail insurance replacement value for an item.  While many companies do appraisals (such as jewelry stores), it is important to receive an appraisal by a group that does not involve themselves in the buying or selling of Gems or jewelry pieces as to avoid any conflict of interest.  We typically use AGL or GS Labs (Gemscan), accredited appraisal companies (with Global Offices) for the Jewelry industry, located in downtown Toronto.  We also have a number of Certificates from EGL a global appraisal company to the gem industry whose Toronto offices have since closed down.

An appraisal will assign a monetary value to a Gem or piece of jewelry and is ultimately subjective based on the appraiser's criteria for grading and experience.  For this reason, only accredited and experienced appraisers are used to evaluate stones.  An appraisal is not an indication of your buying power, that depends on your ability to "wheel and deal" as well as your source of supply and ability to buy in parcel lots or in bulk.


GS allows you to check Appraisal cert numbers online.


Appraisal Company Links:

Gemscan (GS Labs) - http://www.gslaboratories.com/profile.html

AGL - http://www.accurategemlabs.com/