Happy Hour at mbWINEco

Join us each Wednesday for happy hour at mbWINEco to sample a flight of four wines while mingling with neighbors and friends.

$25 for a first class flight

✓Q & A diamonds

✓Q & A repairs, appraisals, upgrades, redesigns, gemology, estates and other services

✓On-site jewelry cleaning & checkup

✓On-site purchases of old costume jewelry for our studio props department

Call/text Dennis at 213-267-0353 or email dennis@dufaujewelry.com for further information.

Join a few friends and neighbors at mbWINEco in Manhattan Beach every Wednesday in June and July

You are invited to sample a flight of four wines selected by FF of mbWIneco .

Please RSPV. Seating for up to 12 people. Mingle and network.

DGL will exhibit hand restored one-of-a-kind hand crafted antique & period jewellery plus hand restored rare vintage timepieces

We will have a gemstone cutter, gemologists and appraiser of jewelry and gemstones at our booth.

See you there.

DGL will exhibit antique & period jewellery, vintage timepieces, estate diamonds and gemstones.

We will have a gemstone cutter, gemologists and buyers of jewelry and gemstones at our booth.

Stop by.

DGL will exhibit antique & period jewellery, vintage timepieces, estate diamonds and gemstones.

We will have a gemstone cutter, gemologists and buyers of jewelry and gemstones at our booth.

Stop by.

All wine tasting proceeds to benefits

Project van Sjors

You are invited to sample wine and hors d'oeuvres while mingling

with friends, vintners, jewelers and gemologists.

 Gemologists will set up for free verbal analysis.

RP 260.000 at the door

Call 62 21 6387 0630 or email dglgemlabs@gmail.com for further information.

25% of proceeds from food & drink orders will be donated.

Jakarta Location Pending: The Sultan Hotel(0.34 km from the Convention Center) or the Ritz Carlton(0.62 km from the Convention Center).

Wine Tasting Event at Barsha Wines, Manhattan Beach

to benefit

Alzheimar's, Greater Los Angeles

You are invited to sample wine and hors d'oeuvres while mingling

with neighbors, friends, vintners, appraisers and gemologists.

Please bring images of your art and collectibles. Gemologists will set up for free verbal appraisals.

Call 310-923-6222 or email dglgemlabs@gmail.com for further information.

15% of proceeds from food & drink orders will be donated.

All spirits & beer tasting proceeds to benefits

Alzheimar's, Greater Los Angeles

You are invited to sample spirits, beer and hors d'oeuvres while mingling with neighbors, friends, vintners, appraisers and gemologists.

Please bring images of your art and collectibles. Gemologists will set up for free verbal appraisals.

$20 at the door

Call 310-923-6222 or email dglgemlabs@gmail.com for further information.

25% of proceeds from food & drink orders will be donated.

El Segundo Location Pending: Rubens Distilling & Brewing Co. on E. El Segundo Blvd. or Deluca Tratoria on Richmond St..

We meet in the lobby of the Doubletree - Reid Park at 10 am. Mr. Dennis will schedule times and places to meet buyers during the day.  Clients are advised to cachet parcels prior to DGL analysis. Please let the sellers know that your purchases are subject to DGL analysis.

Accredited Gemologists Association Tucson Conference

Conference sessions are from 8:30 a.m. - 4:45 p.m.

The Gala Champagne Reception is from 6:30 to 7:30 pm followed by the Gala Dinner Dance & Bonanno Award Ceremony from 7:30 to 11:00 p.m.

Mr. Dennis and and another DGL gemologist will be attending.

Bernadette George hosts a casual and informative evening with Dennis Dufau, founder of DGL Gem Labs.  Dennis has 35 years experience in the international gem & jewelry trade. He will talk about the history and science of gems and jewelry.

Dennis will bring along a treasure chest of one-of-a-kind, antique and vintage jewelry pieces perfect for the Holiday Season!

Professor Sugianto, geologist from the University of Indonesia will conduct the classroom training

• How to Build a Home Gemology Laboratory
• The Optical Properties of Gemstones
• The Physical Properties of Gemstones
• Color Change Phenomena

DGL uses the "Flipped" classroom instructional methodology. This type of learning has the student study the IGS online instructional content prior to the class. In-class lessons are then used more to discuss, answer questions, have live demonstrations, hands-on training  and in other ways to engage students in the syllabus content.

Classes are taught in Bahasa Indonesia.

Professor Sugianto, geologist from the University of Indonesia will conduct the classroom training.

• Evaluating Color, Hue, Tone, and Saturation
• Clarity Grading for Colored Stones
• Distinguishing Diamonds
• Clarity Grading Diamonds

DGL uses the "Flipped" classroom instructional methodology. This type of learning has the student study the IGS online instructional content prior to the class. In-class lessons are then used more to discuss, answer questions, have live demonstrations, hands-on training  and in other ways to engage students in the syllabus content.

Professor Sugianto, geologist from the University of Indonesia will conduct the final exams.

• Written Gem Test 3
• Practical Exam

Assistance will be given to those who need translation.

Professor Sugianto, geologist from the University of Indonesia will conduct the classroom training.

• Specific Gravity Testing Part 1: Definitions
• Specific Gravity Testing Part 2: Using a Balance Scale or a Hanneman Specific Gravity Scale
• Specific Gravity Testing Part 3: Calculating Specific Gravity With An Electronic Scale
• Specific Gravity Testing Part 4: Refining Your Specific Gravity Testing Techniques
• Specific Gravity Testing Part 5: Using Heavy Liquids
• Using a Polariscope
• The Dichroscope
• The Microscope
• The Spectroscope
• Ultraviolet Testing
• Destructive Tests
• Magnetism in Gemology – The Forgotten Property?

DGL uses the "Flipped" classroom instructional methodology. This type of learning has the student study the IGS online instructional content prior to the class. In-class lessons are then used more to discuss, answer questions, have live demonstrations, hands-on training  and in other ways engage students in the syllabus content.

Classes are taught in Bahasa Indonesia.

Professor Sugianto, geologist from the University of Indonesia will conduct the classroom training.

• An Introduction to Gemstone Grading
• Carats, Karats and Carrots
• Evaluating the Cut
• Grading Set Stones
• Recutting Diamonds and Colored Stones
• Grading Gem Carvings

DGL uses the "Flipped" classroom instructional methodology. This type of learning has the student study the IGS online instructional content prior to the class. In-class lessons are then used more to discuss, answer questions, have live demonstrations, hands-on training  and in other ways to engage students in the syllabus content.

Classes are taught in Bahasa Indonesia.

Professor Sugianto, geologist from the University of Indonesia will conduct the classroom training.

• The Nomenclature of Jewelry Part 1: Settings
• The Nomenclature of Jewelry Part 2: Bracelets and Necklaces
• The Nomenclature of Jewelry Part 3: Rings
• The Nomenclature of Jewelry Part 4: Earrings
• The Nomenclature of Jewelry Part 5: Attachments
• Appraising: Basic Terminology
• Appraising Gems and Jewelry
• Gem Price Guide
• Jewelers Pricing Survey

DGL uses the "Flipped" classroom instructional methodology. This type of learning has the student study the IGS online instructional content prior to the class. In-class lessons are then used more to discuss, answer questions, have live demonstrations, hands-on training  and in other ways to engage students in the syllabus content.

Classes are taught in Bahasa Indonesia.

Professor Wijojo, mineralogist from the University of Semerang will conduct the classroom training.

• Cheat Sheets for Gemologists
• Disclosing Enhancements
• Gem Testing Procedures
• How Gems Are Identified Part II: Deductive Reasoning
• Difficult Separations
• What is it? Gemstone Identification Quizzes
• Is it Worth It? Tips and Advice for Determining the Value of Gemstones
• Using The Refractometer
• Testing for Surface Treated Gems

DGL uses the "Flipped" classroom instructional methodology. This type of learning has the student study the IGS online instructional content prior to the class. In-class lessons are then used more to discuss, answer questions, have live demonstrations, hands-on training  and in other ways to engage students in the syllabus content.

Classes are taught in Bahasa Indonesia.

Professor Sugianto, geologist from the University of Indonesia will conduct the classroom training

• Synthetic Gemstones and Their Identification
• Identification of Synthetic Diamonds
• Phenomenal Gems – Unique Phenomena in Gemstones

DGL uses the "Flipped" classroom instructional methodology. This type of learning has the student study the IGS online instructional content prior to the class. In-class lessons are then used more to discuss, answer questions, have live demonstrations, hands-on training  and in other ways to engage students in the syllabus content.

Classes are taught in Bahasa Indonesia.

Professor Sugianto, geologist from the University of Indonesia will conduct the classroom training.

• Appraising Opals Part 1: Nomenclature
• Appraising Opals Part 2: Applying Value
• Fundamentals of Lapidary Part 1: Introduction
• Fundamentals of Lapidary Part 2: Making Smaller Pieces
• Fundamentals of Lapidary Part 3: Tumbling
• Fundamentals of Lapidary Part 4: Cabochon Cutting
• Fundamentals of Lapidary Part 5: Faceting
• Heat Treating Procedures

DGL uses the "Flipped" classroom instructional methodology. This type of learning has the student study the IGS online instructional content prior to the class. In-class lessons are then used more to discuss, answer questions, have live demonstrations, hands-on training  and in other ways to engage students in the syllabus content.

Classes are taught in Bahasa Indonesia.

Professor Sugianto, gemologist from the University of Indonesia will conduct the classroom training.

• What Are Crystal Systems and Mineral Habits?
• How Gems Are Identified
• Gemstone Hardness and Wearability
• How Are Gemstones Treated and Enhanced?
• Gemology Tools
• How To Identify Gems
• 10X Loupe For Gemologists and Jewelers
• Tests Taking Tips and Strategies

DGL uses the "Flipped" classroom instructional methodology. This type of learning has the student study the IGS online instructional content prior to the class. In-class lessons are then used more to discuss, answer questions, have live demonstrations, hands-on training  and in other ways to engage students in the syllabus content.

Classes are taught in Bahasa Indonesia.

Professor Sugianto, geologist from the University of Indonesia will conduct the classroom training

• Impurity Ions and Gemstone Colors
• Radiation and the Treatment of Gemstones
• HPHT Diamond Update
• Identifying Inclusions

DGL uses the "Flipped" classroom instructional methodology. This type of learning has the student study the IGS online instructional content prior to the class. In-class lessons are then used more to discuss, answer questions, have live demonstrations, hands-on training  and in other ways to engage students in the syllabus content.

Classes are taught in Bahasa Indonesia.

Professor Sugianto, geologist from the University of Indonesia will conduct the classroom training.

• An Introduction to Gemology
• What is a Gem?
• Understanding the Formulas in Gemology
• Gem Formation: How are Gemstones Created
• Uncommon Elements Make Uncommon Gemstones
• Guide To Gem Cutting Terms
• How Gems Are Classified 

DGL uses the "Flipped" classroom instructional methodology. This type of learning has the student study the IGS online instructional content prior to the class. In-class lessons are then used more to discuss, answer questions, have live demonstrations, hands-on training  and in other ways engage students in the syllabus content.

Classes are taught in Bahasa Indonesia.

Professor Sugianto, geologist from the University of Indonesia will conduct the classroom training.

• Color Grading Diamonds
• Color Grading Fancy Colored Diamonds
• Cut Grading Diamonds Part 1: Traditional Methods
• Cut Grading Diamonds Part 2: Modern Methods
• Using a Reticle

DGL uses the "Flipped" classroom instructional methodology. This type of learning has the student study the IGS online instructional content prior to the class. In-class lessons are then used more to discuss, answer questions, have live demonstrations, hands-on training  and in other ways to engage students in the syllabus content.

Two of our certified appraisers conduct an Antiques Roadshow style event. Participants will receive a verbal opinion as to the item's description and value. Open to the public. 

Participants are requested to make a donation to the Walk With Sally Foundation. $5 - $10 per item or $30 per box or bag is common.   Email us for any additional information.

Kindly have lunch at the restaurant. Milanos's will donate 10% of sales to the Foundation

www.walkwithsally.org