Professional GemstoneCertification
State-of-the-art gem laboratory with advanced gemological instruments. Precision, expertise, and trusted authenticity reports for every stone.
Color Grading
Our expert gemologists evaluate each gemstone under controlled lighting, capturing tone, hue, and saturation with precision. From Royal Blue sapphires to sunrise-and-sunset Padparadschas, every rare shade is recognized and celebrated.
Following international standards, LGL ensures accurate grading—revealing each stone's true beauty, value, and story, documented and certified for trust.
Origin Determination
The origin of a gemstone—the precise location where it was formed—is a key factor in defining its character and value. At LGL, we use the industry's most advanced equipment, combined with the expertise of our gemologists, to determine origin with precision.
This is a highly complex task, requiring extensive study of inclusion patterns from stones of numerous origins. Currently, we provide origin testing for sapphires and spinels, leveraging years of hands-on experience and meticulous analysis.
Discover LGL
Experience our state-of-the-art gem laboratory
About LGL
LGL Lanka Gem Lab is a state-of-the-art facility with advanced gemological instruments. We specialize in testing and certifying all colored gemstones—from rubies, sapphires, and emeralds to spinel, tourmaline, garnet, chrysoberyl, quartz, and beyond—combining precision, expertise, and trusted authenticity reports for every stone.
Our Services
Comprehensive gemological services using cutting-edge technology and expert analysis
Natural vs Synthetic
Accurately distinguish natural gemstones from all types of synthetic and lab-grown stones.
Variety Identification
We can identify and verify the variety of any colored gemstone with confidence.
Chromium & Titanium Diffusion
We identify diffusion treatments using chromium or titanium to enhance or change gemstone color.
Treatment Analysis
We detect low, medium, and high heat treatments applied to gemstones to enhance color or clarity.
Rare Stone Identification
LGL specializes in identifying rare and exotic gemstones including Taaffeite, Cobalt Spinel, Alexandrite, and more.
Clarity Enhancement (Oil & Resin)
We certify only emeralds treated with oil or resin for clarity enhancement.
Featured Gem
Explore the fascinating world of gemstones with our featured collection
Ruby
Corundum
Ruby is one of the most prized gemstones in the world, belonging to the corundum family. Its hardness and vibrant color make it highly durable and desirable for fine jewelry. Rubies are primarily known for their rich red color, which ranges from pigeon blood red to lighter pinkish-red shades. Trade terms sometimes include "pigeon blood" for the most vivid red stones. Rubies are found in origins such as Myanmar (Burma), Thailand, Sri Lanka, Madagascar, and Mozambique. Burmese rubies, particularly, are famous for their vivid red saturation.
Learn MoreLearn & Explore
Discover more about our services, gemstones, and expertise
Explore Our Services
Professional gemstone certification services
Gems We Test
Browse our comprehensive gemstone database
Read Gemological Articles
Educational insights and research
About Our Laboratory
Learn about our state-of-the-art facility
Verify Report
Verify your gemstone certificate authenticity
Contact LGL
Get in touch with our team
Certificate Types
Professional certification reports tailored to your needs
Card Certificate
Compact format for single stones
Full Report
Comprehensive detailed analysis
Origin Report
Includes origin determination
Ready to Get Your Gemstones Certified?
Contact us today to learn more about our services or submit your gemstones for professional certification.