Bangkok Blue Sapphire (Neelam) 5.20 Carat — Premium Thailand Origin
This Bangkok Blue Sapphire (Neelam) 5.20 Carat (5.71 Ratti) is a lab-certified natural sapphire, expertly cut and processed in Bangkok’s world-renowned gem facilities. With an impressive 11.2 × 9 mm face-up spread relative to its weight, this Bangkok Blue Sapphire offers exceptional visual presence — the well-proportioned oval shape delivers excellent finger coverage for rings and graceful appeal for pendants.
Bangkok serves as the global hub for sapphire cutting and treatment, where master craftsmen transform rough material into polished gems using techniques refined over generations. The heated and treated status is standard industry practice — a permanent enhancement accepted worldwide that improves colour saturation and clarity without altering the stone’s natural corundum structure.
Gemstone Specifications
| Gemstone Type | Natural Blue Sapphire (Neelam / नीलम) |
| Weight | 5.20 Carat (5.71 Ratti) |
| Dimensions | 11.2 × 9 × 4.8 mm |
| Shape/Cut | Oval Mix Cut |
| Colour | Blue |
| Origin | Bangkok, Thailand (Traded & Processed) |
| Treatment | Heated & Treated (Industry Standard) |
| Hardness | 9 on Mohs Scale |
| Refractive Index | 1.76 – 1.77 |
| Chemical Composition | Al₂O₃ (Corundum) |
| Certification | Lab Certified (ISO 9001:2015 Certified Laboratory) |
| Conclusion | Natural Blue Sapphire |
Why This 5.20 Carat Bangkok Blue Sapphire
This Bangkok Blue Sapphire at 5.20 carats (5.71 Ratti) features an excellent spread-to-weight ratio — the 11.2 mm length offers visual impact comparable to larger stones. Ideal for astrological use for individuals weighing around 65-70 kg based on traditional weight formulas, this Bangkok Blue Sapphire balances substantial appearance with practical wearability and accessible pricing.
Video Inspection
Watch the detailed 360° video of this exact Bangkok Blue Sapphire to examine colour, clarity, cut quality, and light performance from every angle before purchase. The video is shot under neutral lighting conditions for accurate colour representation.
Certification and Authenticity
Every gemstone from Ratna Gems includes:
- Lab Certificate from an ISO 9001:2015 Certified Gems Testing Laboratory
- Lifetime Authenticity Guarantee — we stand behind every stone we sell
- Certificate Verification — verify your report directly with the issuing laboratory
The certificate confirms this Bangkok Blue Sapphire’s identity as Authentic Blue Sapphire with disclosed heat treatment.
Natural Characteristics
Minor natural inclusions, silk, colour zoning, or internal growth patterns may be visible under magnification. These are natural identifying characteristics that help gemologists confirm the stone is genuinely natural and distinguish it from synthetic or imitation materials. Such features are normal in natural gemstones and do not indicate defects.
Browse More Blue Sapphire Options
Explore our complete collection of certified Blue Sapphire (Neelam) stones:
View All Blue Sapphire (Neelam) Stones
New to buying Blue Sapphire? Read our comprehensive guide first:
Blue Sapphire (Neelam) Buying Guide
Our Commitment to You
| Certification | Lab report from ISO 9001:2015 Certified Laboratory + Lifetime Authenticity Guarantee |
| Returns | 7-day easy return from delivery. See our Return & Refund Policy |
| Shipping | Free insured shipping across India with tracking |
| Packaging | Secure, tamper-evident packaging |
| Payment | COD available | Secure online payment options |
| Support | WhatsApp assistance for any queries |
Frequently Asked Questions
This Bangkok Blue Sapphire is 100% natural, confirmed by laboratory certification. The stone has undergone heat treatment, which is a standard, accepted practice in the gemstone industry that enhances colour and clarity permanently.
In Vedic tradition, Blue Sapphire (Neelam / नीलम) is associated with Saturn (Shani / शनि). According to traditional beliefs, it is considered the primary gemstone for:
- Makar Rashi (Capricorn / मकर राशि) natives
- Kumbh Rashi (Aquarius / कुंभ राशि) natives
- Those experiencing Shani Sade Sati period
- Shani Mahadasha or Shani Dhaiya phases
Ratna Gems provides certified gemstones only and does not offer astrological advice. We recommend consulting a qualified astrologer or Jyotish to determine personal suitability based on your individual birth chart (Kundli).
For those following traditional wearing practices, here are commonly recommended guidelines:
- Day: Saturday (Shanivar / शनिवार)
- Time: Morning during Shukla Paksha
- Finger: Middle finger of working hand
- Metal: Silver, White Gold, or Panchdhatu
- Weight Formula: Body weight (kg) ÷ 12 = Ratti
- Mantra (Optional): Om Sham Shanicharaya Namah (108 times)
These are traditional practices shared for informational purposes. Individual practices may vary based on regional customs and personal astrologer recommendations.
Bangkok Blue Sapphires offer excellent value compared to premium origins like Kashmir, Ceylon, or Burma. Price differences reflect market positioning, origin premiums, and supply chains. Bangkok serves as a major trading hub where sapphires from various sources are cut and processed, often resulting in competitive pricing while maintaining quality standards.
Ceylon (Sri Lanka) sapphires are typically priced higher due to their reputation for exceptional colour and clarity. Bangkok Blue Sapphires offer similar beauty at more accessible price points, making them popular for both jewellery and astrological purposes.
Every stone comes with a lab certificate from an ISO-certified laboratory. You can verify the certificate number directly with the issuing lab. Additionally, natural sapphires display characteristic inclusions and properties that trained gemologists can identify.
Traditional recommendations suggest Silver, White Gold, or Panchdhatu for Blue Sapphire. The choice often depends on personal preference, skin sensitivity, and any specific guidance from your astrologer.
Yes, we offer a 7-day easy return policy from the date of delivery. Please review our Return & Refund Policy for complete terms and conditions.
Heat treatment is widely accepted in the gemstone trade and does not change the stone’s natural identity. Many practitioners consider heated natural sapphires suitable for astrological use. For specific guidance, consult your astrologer.
A traditional formula suggests dividing your body weight in kg by 12 to get the recommended weight in Ratti. For example, a 72 kg person would require approximately 6 Ratti. However, individual recommendations may vary based on astrological consultation.
Ratna Gems specializes in loose certified gemstones and does not currently offer custom jewellery services. You can have this stone set by your trusted local jeweller.
