Services & Fees
Comprehensive gemological services using cutting-edge technology and expert analysis
Core Testing Services
Natural vs Synthetic
Natural vs Synthetic
At LGL, we accurately distinguish natural gemstones from all types of synthetic and lab-grown stones, including popular synthetics like synthetic sapphire, ruby, spinel, and emerald. Our expert analysis detects any man-made or treated stone, so clients never have to doubt the authenticity of their natural gemstones. We do not issue certification for synthetic stones, ensuring clients have full clarity about their origin.
Variety Identification
Variety Identification
We can identify and verify the variety of any colored gemstone with confidence, from sapphires, rubies, and emeralds to spinel, tourmaline, garnet, and beyond. No matter how rare or unique, LGL ensures each gem is correctly classified, helping collectors, jewelers, and traders know exactly what they possess. Accurate variety identification protects value and provides trust, giving clients certainty about the true nature of every colored gemstone in their collection.
Color Grading
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.
Rare Stone Identification
Rare Stone Identification
LGL specializes in identifying rare and exotic gemstones, including Taaffeite, Cobalt Spinel, Alexandrite, Grandidierite, Serendibite, Gahnite, Jeremejevite, Red Beryl (Bixbite), Demantoid Garnet, Painite, and many more. Our expert analysis confirms authenticity, variety, and quality, helping collectors, investors, and enthusiasts understand and value these extraordinary stones. Each gemstone is meticulously documented, providing accurate identification and certification for even the rarest gems, ensuring confidence and trust in every evaluation.
Chemical Treatment Analysis
Heat Treatment
Heat Treatment
We detect low, medium, and high heat treatments applied to gemstones to enhance color or clarity. Other treatments involving substances like titanium, chromium, or beryllium, as well as HPHT heat, are not classified or certified by LGL. Our analysis provides clients with precise information about heating used while maintaining clarity and transparency regarding what falls within our certification scope.
Chromium & Titanium Diffusion
Chromium & Titanium Diffusion
We identify diffusion treatments using chromium or titanium. This treatment involves artificially introducing elements into the gemstone's surface to enhance or change its color. Such stones are not eligible for certification because we ensure our clients receive only gemstones that meet international standards and have undergone internationally accepted treatments.
Fracture & Cavity Filling
Fracture & Cavity Filling
We detect lead glass filling, cavity filling, and flux heat treatments (heated with borax). These stones are not certified because LGL guarantees that only gemstones in internationally accepted conditions and treatments are issued certificates, ensuring accurate grading and market credibility.
Clarity Enhancement (Oil & Resin)
Clarity Enhancement (Oil & Resin)
We certify only emeralds treated with oil or resin. Other clarity-enhanced gemstones are not eligible for certification, as we maintain the strictest standards to ensure that clients receive certificates only for stones that meet international gemological norms and recognized enhancement practices.
Dye Treatment
Dye Treatment
Dye treatment involves adding artificial color to a stone to improve or alter its appearance. Dyed gemstones are identified but not certified. This ensures that LGL clients receive certification exclusively for stones that comply with international standards and accepted treatments, maintaining trust, value, and authenticity in every gemstone evaluated.
Beryllium Diffusion
Beryllium Diffusion
Beryllium diffusion is a chemical process used to alter or intensify a gem's color, often deepening hues in sapphires. Gemstones treated with beryllium diffusion are detected but not certified. LGL follows strict international standards to certify only stones with recognized treatments, ensuring clients' gemstones are genuine, reliable, and valued according to globally accepted practices.
Synthetic Overgrowth / Reconstitution
Synthetic Overgrowth / Reconstitution
We detect synthetic overgrowth, coatings, reconstituted stones, as well as doublets and triplets. These are not certified because LGL ensures that all gemstones issued with certificates meet international standards and have undergone only treatments accepted globally, preserving trust, authenticity, and market value.
Advanced Chemical Analysis
Origin
Origin
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.
Cobalt Testing | Spinel
Cobalt Testing | Spinel
Natural cobalt spinels are rare, and their classification depends on cobalt and iron content. Higher cobalt and lower iron levels indicate superior quality and color. LGL's testing accurately measures these elements to classify natural cobalt spinels, providing clients with reliable certification for these exceptional and highly valued gems.
Chromium & Vanadium Testing | Beryl
Chromium & Vanadium Testing | Beryl
Beryl gemstones are classified based on chromium and vanadium content, which determines whether they qualify as emeralds. Our analysis ensures accurate classification according to internationally accepted standards, providing clients with precise and trustworthy certification for their beryl gemstones.
Alexandrite Testing
Alexandrite Testing
We perform specialized tests on chrysoberyl to assess whether it is alexandrite. This involves examining color-changing properties along with chromium content, ensuring accurate identification. LGL's certified analysis confirms the gemstone's classification, helping collectors and jewelers trust the authenticity and rarity of each stone.
Additional Services
Gem Photography
Gem Photography
We capture high-quality images of gemstones, highlighting color, clarity, and unique features. Professional photography ensures accurate representation for documentation, marketing, and online display, helping clients showcase and preserve their gems' beauty.
360° Video
360° Video
Our 360° gemstone videos provide a complete, interactive view of every stone, allowing clients to examine facets, color, and brilliance from all angles. This service enhances transparency, marketing, and appreciation of each gemstone's quality and craftsmanship.
Price List
Effective from: June 5, 2024
Service Tiers
Normal Service
Usually in 3 days. Times may vary depending on availability.
Express-1
Within 24 hours
Super Express
3+ hours
Base Prices (LKR)
| Service | Precious | Semi |
|---|---|---|
| Verbal | 1,500 | 1,000 |
| Memo Card | 2,000 | 1,500 |
| Full Report | 3,500 | 3,000 |
| Jewelry Report | 4,500 | 4,000 |
| Origin Full Report | 5,500 | 5,000 |
| Pair Memo Card | 4,000 | 3,000 |
| Pair Full Report | 6,000 | 5,000 |
| Report Copy | 3,500 | 3,000 |
Express Fees
Express-1: +2,500 LKR
Super Express: +3,500 LKR
Gem Classification
Precious: Sapphire, Ruby, Emerald, Alexandrite, Tsavorite, Rare stones
Semi: All other semi-precious stones
*All submissions are subject to availability and assume the client's agreement to terms & conditions
Ready to Test Your Gemstone?
Start your testing request through the secure LGL Client Portal. You will receive a submission reference and can track your testing status online.
Request Gem TestingFrequently Asked Questions
Common questions about our gemological services and certification process