Professional Gemological Laboratory
Serving jewelers, collectors, and gem enthusiasts worldwide from Ragala, Sri Lanka. Certified gemstone identification with precision instruments.
Our Services
Gem Identification
Professional identification of natural, synthetic, and treated gemstones using advanced microscopy.
From $15/reportSpecific Gravity Testing
Hydrostatic weighing method with accuracy up to ±0.01 g/cm³.
From $10/testRefractive Index
Precise RI measurements using professional refractometer.
From $10/testScratch Detection
Surface analysis at 40x magnification with detailed documentation.
From $8/testCertification Report
Detailed gemological certificate with all parameters and professional recommendation.
From $25/reportConsultation
Expert consultation for jewelers, collectors, and investors.
$50/hourLive Gem Scanner
Gemologist Notes
For certified laboratory report, please contact us directly
Sri Lankan Gemstone Database
Sri Lanka is home to over 75 varieties of gemstones. Below are the most significant with their SG and RI values:
| Gemstone | Color | SG (g/cm³) | RI Range | Origin Region |
|---|---|---|---|---|
| Ceylon Blue Sapphire | Blue | 4.00 | 1.762-1.770 | Ratnapura, Elahera |
| Ruby (Corundum) | Red | 4.00-4.05 | 1.762-1.770 | Ratnapura, Balangoda |
| Alexandrite | Color Change | 3.73 | 1.746-1.755 | Ratnapura |
| Padparadscha | Orange-Pink | 4.00 | 1.762-1.770 | Ratnapura |
| Yellow Sapphire | Yellow | 4.00 | 1.762-1.770 | Elahera, Kataragama |
| Ceylon Spinel | Red/Blue | 3.60 | 1.718 | Ratnapura |
| Moonstone | White/Blue | 2.56 | 1.518-1.525 | Meetiyagoda |
| Chrysoberyl Cat's Eye | Yellow/Green | 3.72 | 1.746-1.755 | Ratnapura |
| Ceylon Zircon | Blue/Brown | 4.69 | 1.925-1.984 | Elahera |
| Amethyst | Purple | 2.65 | 1.544-1.553 | Rakwana, Deniyaya |
| Garnet (Rhodolite) | Pink-Red | 3.84 | 1.760-1.770 | Hakmana, Matale |
| Tourmaline | Green/Pink | 3.06 | 1.624-1.644 | Elahera, Okkampitiya |
Values represent typical ranges. For accurate identification, laboratory testing is recommended.
Contact Our Laboratory
205 Stafford Cross Road
Ragala, Halgranoya 22240
Sri Lanka
+94 78 377 9999
+94 77 123 4567
support@kmsgems.com
info@kmsgems.com
Mon-Sat: 9:00 AM - 6:00 PM
Sunday: Closed