Don Kogen

Over 20 years’ experience in the gemstone and jewelry industry.

[Don Kogen @DonKogen1]

Just saw this and thought ain't that the truth

[Don Kogen @DonKogen1]

@laurendodgee black opal

[Don Kogen @DonKogen1]

Hey check out Kat Florence's new signature cut on this sphene from Madagaskar

[Don Kogen @DonKogen1]

@DonKogen1 Cambodian Zircon Kashmir Peridot and Afghanistan Kunzite

[Don Kogen @DonKogen1]

Name these 3 stones hot off the cutting wheel

[Don Kogen @DonKogen1]

New mine Aquamarine Northern Madagascar top gem I am happy

[Don Kogen @DonKogen1]

Anybody ever try to live off berries for a week

[Don Kogen @DonKogen1]

Here we go again quick stop In London then off to get new Target

[Don Kogen @DonKogen1]

I am back from Colombia here is the material from the new mine Muzo Belt highlands 100% Natural no oil whatsoever

[Don Kogen @DonKogen1]

Can you guess where I am going

[Don Kogen @DonKogen1]

@JohnPurdum imperial topaz

[Don Kogen @DonKogen1]

@DOB1105 This Particular gem $200,000 around $6,000 per carat

[Don Kogen @DonKogen1]

New discovery Colombian Emerald Boyaca highlands deep jungle

To go or not to go mmm let me think :)

[Don Kogen @DonKogen1]

@littlesmileyb Bi Color Tourmaline is what it actually is and this saturation of blue is really rare

[Don Kogen @DonKogen1]

@R1ch808 lol a bit out of my league

[Don Kogen @DonKogen1]

This is the only one like it I have ever seen if you feel you know gems give this one a shoot and guess the type

[Don Kogen @DonKogen1]

Holiday Over Back to work LOL
Guess what this gem is

[Don Kogen @DonKogen1]

Celebrating the Successful Ruby Mission :)

[Don Kogen @DonKogen1]

Went deep Burma discovered June 6th 2014
Introducing my new unheated 15.87 carat clean Mogok Burma Ruby Priceless!!

[Don Kogen @DonKogen1]

Deep trying to do Twitter on Sat phone not easy :(