Skip to content
DCLA logo

The Diamond Certification Laboratory of Australia (DCLA)

Buy and sell diamonds with the help of the experts

  • Home
  • BUY Diamonds Direct
    • Buy Natural Diamonds
    • Buy Labgrown Diamonds
  • Services
    • Diamond Certification
    • Online Certificate Check
    • Diamond selling advice
    • Diamond Verification
    • Damage & Salvage Assessment
    • DCLA Diamond and Jewellery Valuations
    • Advanced Diamond Testing
    • Diamond Certificate Copy
    • Diamond Registry
    • Cold Laser Inscription
    • How to Submit a Diamond to DCLA
    • DCLA ‘Trustline’ Telephone Hotline
    • Diamond Seminars
    • DCLA Online Certificate Check
    • How to Read a DCLA Certificate
    • DCLA Diamond Grading Guarantee
    • Register a Diamond
  • Diamond Education
    • 5c’s Of Diamond Grading
    • Carat Weight
    • Cut
    • Colour
    • Clarity
    • Diamond Shape
    • Confidence
    • Technology & Grading Process
    • DCLA Transparency Grading System
    • Synthetic Diamonds
    • Diamond Treatments
    • Glossary & Picture Library
    • DCLA Trustmark Initiative
    • About the DCLA Trustmark
    • FAQ´s
  • Contact Us
    • Mission Statement
    • DCLA History
    • DCLA Laboratory Team
    • DCLA Trustmark & Logo Usage
    • DCLA Timeline
  • News
Posted on July, 2017 by Admin DCLA

Gem Quality

Diamonds of a beauty and calibre suitable to be used in jewellery. Only approximately 20% of mined diamonds are of gem quality  – 80% are in fact industrial grade diamonds.

CategoriesGlossary

Post navigation

Previous PostPrevious Fracture Filling
Next PostNext Gemmology
DCLA IDC

Proportion Grading System

Click here to download PDF
DCLA diamond exchange
Buy Your Diamonds Direct »
VALUATIONS MADE SIMPLE
Acuval provides Valuations on your personal items from a network of expert valuers - signed and certified, they may be used for insurance, asset management, estate planning, re-sale, auctions, and inheritance.
VALUATIONS MADE SIMPLE

Acuval provides Valuations on your personal items from a network of expert valuers - signed and certified, they may be used for insurance, asset management, estate planning, re-sale, auctions, and inheritance.

Latest News

  • G7 bans Russian diamonds from January in show of solidarity to Zelensky
    December, 2023
  • 133 Carat Yellow Diamond Fetches $5.5 Million At Sotheby’s Auction
    December, 2023
  • Signet Sales Decline in Weak US Market
    December, 2023
  • Rio Tinto Delighted with Argyle and Diavik Tender
    December, 2023
  • Christie’s sells rare blue diamond for over $40m USD
    December, 2023
  • Hong Kong Luxury Sales See Further Revival
    November, 2023
  • Rio Tinto sells stake in Canadian diamond project, ups interest in copper
    November, 2023
  • Rick Ross’s Diamond-Set Rolex
    November, 2023
  • India’s Rough Imports Rise Despite Supply Freeze
    November, 2023
  • Low Diamond Demand, Struggling Chinese Economy Dent TSL
    November, 2023
© 2023 Diamond Certification Laboratory of Australia
  • Diamond Certification
  • Diamond Certificate Check
  • Diamond News
  • Privacy Policy & Terms and Conditions
  • Contact Us
TOP