Gem treatments – Northwest Gemological Laboratory

Northwest Gemological Laboratory logoNorthwest Gemological Laboratory
Independent jewelry appraisers
Northwest Gemological Laboratory site navigationSkip to content
  • Northwest Gemological Laboratory
  • Appraisals
  • Lab
    • Appraisal Rates
    • Curriculum Vitae
    • Media Appearances
    • Mission
    • Operations
    • Recent Events
  • School
    • About Us
    • Mission
    • Courses
      • Diamonds – what you need to know
      • Gemstone Evaluation
      • Gemstone Identification (I & II)
      • Return of the Summer Seminar Series
    • Enroll Now for 2020!
  • Topics
    • Topics of Northwest Gemological Laboratory
    • Northwest Jewelry Conference
  • Directions
  • Contact Us
Search
  • NWGEM on Facebook
  • NWGEM on Twitter
  • Back to top ↑

Tag: Gem treatments

WikiHow Tell if Ruby is Real

Whether you like it or not – Ruby and Glass is all the Rage…

When I first became a gemologist in the late 1970’s I appreciated…

Continue reading "Whether you like it or not – Ruby and Glass is all the Rage…"…
12 Jun 2009Comments: 0
Pricing-Enhanced Diamonds Northwest Gemological Laboratory

Pricing-Enhanced Diamonds

Just got a call that has me riled up – again. It…

Continue reading "Pricing-Enhanced Diamonds"…
12 Jun 2009Comments: 0
Gem treatments confuse consumers and jewelers alike

Gem treatments confuse consumers and jewelers alike

It seems like there’s another gem treatment around every corner these days.…

Continue reading "Gem treatments confuse consumers and jewelers alike"…
20 Nov 2005Comments: 0

Tucson Review

Each year, I take a small number of my gem students to…

Continue reading "Tucson Review"…
20 Apr 2005Comments: 0
Internet Diamonds - Click to buy

Internet bargain or scam?

Yes. The problem is you don’t know which until you check them…

Continue reading "Internet bargain or scam?"…
1 Sep 2001Comments: 0

Fracture-filled: fact, fiction, future

It has been seven years since Zvi Yehuda was credited with the…

Continue reading "Fracture-filled: fact, fiction, future"…
1 Jul 1994Comments: 0
Diamond Enhancement - Wikipedia

Diamond enhancement stirs controversy

The latest technological breakthrough in gem enhancement – the “Yehuda” treatment for…

Continue reading "Diamond enhancement stirs controversy"…
1 Dec 1990Comments: 0
1 2 »

NORTHWEST GEMOLOGICAL LABORATORY
NORTHWEST'S LEADING INDEPENDENT APPRAISER OF FINE JEWELRY

Get an Appraisal!

NORTHWEST GEMOLOGICAL INSTITUTE
THE NORTHWEST'S SCHOOL FOR GEMOLOGY

Start Learning Now!

NGL & NGI Events
What is happening

Gemology Events!

Recent Posts

  • Could we save you $864 on your insurance? April 10, 2020
  • Composite rubies are not genuine July 3, 2018
  • Northwest Gemological is the Source For All Your Gemological Needs! June 26, 2010

Contact Info

Address:

Northwest Gemological Laboratory
10801 Main Street Suite 105

Bellevue, WA 98004

Business hours:

Monday–Thursday 8:30am – 4:00pm
Friday 8:30am – 3:30pm
Closed Saturday & Sunday– 0:00 – 0:00

Phone number:

(425) 455-0985

Email address:

nwgem@nwgem.com

Phone: 425.455.0985 | Fax: 425.454.3088 | Office: 10801 Main Street Suite 105 Bellevue, WA 98004
Office Hours: Monday - Thursday 9am - 3pm
2018 © Northwest Gemological Laboratory

  • NWGEM on Facebook
  • NWGEM on Twitter
  • Back to top ↑