2.59 ct cobalt certified unheated natural color change spinel.

Item Information

Dimensions (mm) 9.5 x 8.2 x 5mm
Weight (carats) 2.59 carats
Certified Gemstone
No Treatment

Beautiful blue violet color under incandescent light. Looks more cobalt blue in natural sunlight. Violet under fluorescent. Really a pretty looking stone and nice size as well at 2.59 cts. Sri Lanka origin. Color changer.  VS quality under magnification.  Totally eye clean.

Certification says no indication of surface enhancements so no worries about cobalt diffusion.  This stone is NOT surface coated.  Neither are any of my other gems.  I buy direct from the miners and eliminate all the middle men so I can offer you the savings.   

Please be aware that I pride myself on bringing the best quality stones for the best possible prices.  I only select the best cut stones to offer my customers.   I try to price my stones below other sellers and try to make sure all customers are getting a true gemstone at a bargain price.   There is an article on this site about blue spinel titled “The rarest of them all”.  It is located in the learn section under Additional Gemstone Information.   Spinel is rarely treated or heated as it naturally comes without many inclusions and heating does nothing to increase the beauty of the stones.   Spinel is rapidly becoming more popular.  I’ve heard many gem affectionados state it was their favourite gemstone.  It was once thought to be sapphire or ruby depending upon the color.   The imperial crown housed in the tower of London has a large red spinel which was once thought to be a red ruby.  It is named the Black Prince’s Ruby and has a recorded history dating back to 1366 AD. Cobalt is the main colorant in blue spinels and are especially rare.  For me I prefer them over sapphires.  The better price, less inclusions and lower cost make it the better value.  It is also a hardness of 8 which is only slightly under sapphire so is good for everyday wearing.

You have not bid on this auction.


1 bid placed so far

$350 henryk
Add to Watch List Ask a Question * All prices in USD

Audit Information

The Gemstone Sheriff program allows our members to request an audit on any auction, which is completed by an independent Gemologist who assesses the accuracy of the item description and pictures.

Pricing & Details

Bid Increment $1
Starting Bid $350
Auction ID 809028
Watchers 21 watching
Viewed 1,888 times
Starts 24th Jul 2020 6:05pm PDT
Ends 14th Aug 2020 3:41pm PDT

Shipping & Insurance

Provider Shipping Transit
Express Shipping $50.00 5 days
FedEx $120.00 4 days
Standard Shipping - Tracked $25.00 21 days
Shipping Insurance all providers $5.02 (optional)

About Gemrough

You May Also Like