The Manhattan Chapter GIA Alumni Collective
The Manhattan Chapter GIA Alumni Collective
is Proud to Present:
What’s New with Paraiba Tourmaline?
Current Trends Influencing Availability and Pricing in the Gemstone Market
with
Stuart Robertson, GIA GG
President of Gemworld International
Publisher of the Gemguide
Paraiba photo courtesy of Roland Schluessel
This PowerPoint presentation will explore factors shaping current supply and demand in the gem trade.We will focus on the Big-3—Ruby, Sapphire and Emerald as well as the Big “Ps”—Paraiba and Padparadscha. The talk will conclude with a few thoughts regarding the overall state of the market and what to expect in Tucson.


Paraiba photo courtesy of Roland Schluessel
This PowerPoint presentation will explore factors shaping current supply and demand in the gem trade.We will focus on the Big-3—Ruby, Sapphire and Emerald as well as the Big “Ps”—Paraiba and Padparadscha. The talk will conclude with a few thoughts regarding the overall state of the market and what to expect in Tucson.
DATE: Thursday, October 29th, 2026
TIME: 5-6 PM Pizza & Sodas 6-7:30 PM Lecture
PLACE: GIA New York Education, 50 West 47th St. (bet. 5th and 6th Aves.), 8th Floor
COST: $30 Admission Limited to 50. Prepaid Only! No walk-ins! As a courtesy to our alumni and the speakers there will be no admittance after 6 PM. If you are not on the security list by the RSVP date of Thursday, October 22nd, you cannot attend. This is 7 days before the event!! All attendees must bring their government issued identification (driver’s license or passport) to pick up their access card at the building lobby security post area with no exception. Please come half hour early due to security protocols.
RSVP: Reservations must be in by Thursday, October 22nd!
PAYMENT: Register Here
QUESTIONS: Gail B. Levine 718.897.7305 or Merle S. Koblenz 860.365.6016
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