Compare Gemstones
Compare gemstone properties side by side using specification data from our gemstone articles.
π€ Founder
Ms. Hasini Rathnayake
Brilliant-Cut Specialist & Optical Gem Designer (Sri Lanka)
π About the Studio
Star Light Gem Cut Studio is a fictional premium gemstone cutting workshop focused on maximizing brilliance, fire, and light performance in every stone. Founded by Ms. Hasini Rathnayake, the studio is known for precision-crafted brilliant cuts that enhance the natural sparkle of gemstones.
The studio blends artistic design with scientific cutting principles to ensure each gem reflects maximum light return and visual beauty.
π Specializations
We work with a wide range of gemstones:
- Sapphire (Blue, Pink, White)
- Ruby (Natural & Heat-Treated)
- Diamond-style simulants & Spinel
- Topaz (Sky Blue, Imperial)
- Tourmaline
- Zircon
- Garnet
β¨ Cutting Expertise
- Brilliant Cut Optimization
- Round Brilliant Precision Faceting
- Cushion & Oval Brilliant Variants
- Light Reflection Enhancement
- Fire & Sparkle Maximization
- Custom Luxury Cut Design
π¬ Techniques Used
- Advanced proportion mapping
- Light performance simulation
- Laser-guided alignment tools
- Hand-finished polishing for maximum clarity
- Symmetry correction and refinement
π Gemstone Quality Report
Each gemstone includes a professional analysis report:
- Carat weight (before & after cutting)
- Exact dimensions (mm precision)
- Cut grade (Excellent / Very Good / Good)
- Symmetry & polish score
- Light return performance rating
- Clarity observation notes
- Treatment disclosure
π Service Coverage
- Based in Sri Lanka
- International gemstone clients accepted
- Secure insured global shipping
- Export-ready certification support
πΌ Ideal Clients
- Luxury jewelry brands
- Gem collectors
- Export traders
- Investment buyers
- Custom jewelry designers
π« Studio Vision
At Star Light Gem Cut Studio, every gemstone is crafted to capture and reflect light at its highest potentialβturning raw minerals into radiant, high-value masterpieces.
π Contact
βοΈ Email: starlightcut@demo-gems.com
βοΈ Phone: +94 77 222 3344
π Address: 21 Gem Vision Road, Ratnapura, Sri Lanka
π¬ WhatsApp: +94 77 222 3344
| gemstone_name | Ruby |
| chemical_formula | AlβOβ (Aluminum Oxide), with chromium (CrΒ³βΊ) as the primary coloring element |
| mineral_species | Corundum |
| crystal_system | Trigonal |
| mohs_hardness | 9 |
| refractive_index | 1.762 β 1.770 |
| specific_gravity | 3.97 β 4.05 |
| optical_properties | Anisotropic; Uniaxial Negative; Double Refraction; Birefringence approximately 0.008 β 0.010 |
| color | Red, Pigeon Blood Red, Vivid Red, Pinkish Red, Purplish Red, Orangish Red |
| inclusions | Rutile Silk, Needle-like Inclusions, Fingerprint Inclusions, Healed Fractures, Mineral Crystals, Color Zoning |
| treatments | Heat Treatment, Flux-assisted Heat Treatment, Lead-glass Filling, Fracture Filling, Surface Diffusion (less common) |
| origins | Sri Lanka (Ceylon), Myanmar (Burma), Mozambique, Madagascar, Thailand, Tanzania, Vietnam, Afghanistan, and Cambodia |
Agate is a remarkable variety of chalcedony, a cryptocrystalline form of quartz that occurs naturally in an incredible range of colors and patterns. Its patterns, translucency, and sometimes moss-like inclusions can distinguish agates from other chalcedonies.
Some notable facts about agate stone include:
- Agates can be opaque, translucent, or occasionally completely transparent.
Agate's vivid colors result from traces of iron, manganese, titanium, chromium, and nickel oxides as well as other elements.
- These stones are renowned for taking an exceptional polish.
- They have remarkable durability, which makes them tough enough for most jewelry applications.
- Designers often take advantage of agate's intriguing patterns to create unique and fascinating jewelry pieces.
Exploring Varieties of Agate Stones
Gemologists usually describe agate varieties by their color patterns, inclusions, or sources. The color patterns in agates usually take the form of flat or concentric layers or bands. Mossy or dendritic ("tree-like") inclusions can sometimes create the impression of vegetation and landscapes.

Banded Agate
Banded agates feature regular color layers and bright colors, making them incredibly popular. However, keep in mind that many of the richly colored banded agates you find for sale are dyed commercially. Although banded agates occur all over the world, Brazil stands out as one of the most productive sources.





Banded agates feature regular color layers and bright colors, making them incredibly popular. However, keep in mind that many of the richly colored banded agates you find for sale are dyed commercially. Although banded agates occur all over the world, Brazil stands out as one of the most productive sources.
| gemstone_name | Agate |
| chemical_formula | SiOβ (Silicon Dioxide) |
| mineral_species | Chalcedony (Microcrystalline Quartz) |
| crystal_system | Trigonal (Quartz) |
| mohs_hardness | 6.5 β 7 |
| refractive_index | 1.530 β 1.540 |
| specific_gravity | 2.58 β 2.64 |
| optical_properties | Aggregate; Cryptocrystalline; Usually shows no visible birefringence in ordinary gem testing |
| color | White, Grey, Blue, Green, Red, Orange, Yellow, Brown, Black, and Multicolored |
| inclusions | Fine Banding, Dendritic Manganese Oxide, Iron Oxide Inclusions, Mineral Impurities, Fluid Inclusions, Moss-like Patterns |
| treatments | Dyeing, Heating, Bleaching, Impregnation, and Surface Treatments |
| origins | Brazil, Uruguay, India, Madagascar, Botswana, Mexico, United States, Australia, Germany, and Sri Lanka |