⚠ Don’t commit to a purchase yet. A quick consultation could save you hundreds or thousands of dollars.
Personal Gemologist Service · Bangkok
Your Personal GIA Gemologist
Before You Buy
Not sure if that ruby is really unheated? Worried the emerald price is too good to be true? I’ll verify it for you in person, with professional equipment.
✓ GIA Graduate Gemologist
✓ AJP™ Certified
✓ 15+ Years Bangkok Trade
✓ Perfect 5★ Google Rating
✓ Family Business Since 1959
Services & Fees
Choose the right consultation for your situation
All services performed personally by Tarun Gupta, GIA Graduate Gemologist. Not delegated to staff.
In-office · Visual
Color Verification
฿1,000
≈ US$29 · In-office, item brought to me
Is the color accurately described? Color misrepresentation is the #1 cause of overpaying for gemstones.
- Verify dominant color (ruby vs pink sapphire, emerald vs green beryl)
- Identify if color grade is accurate for the price stated
- Written summary of findings via email
Best for: Buying locally in Bangkok with item in hand
Most Popular
In-office · Full ID
Full Gem Identification
฿2,000
≈ US$56 · In-office, item brought to me
Comprehensive identification using professional gemological instruments not just a visual check.
- Refractometer test (refractive index identification)
- Microscope inspection for natural vs. synthetic vs. glass
- Heat treatment detection (ruby, sapphire, emerald)
- Everything in Color Verification included
- Written report emailed after inspection
Best for: Any purchase over ฿10,000 / US$300
On-location · Bangkok
On-Site Visit
฿3,500
≈ US$100 · I travel to the seller, Bangkok only
Can’t bring the item to me? I’ll come to the seller so you can verify before committing to purchase.
- I travel to the seller’s location in Bangkok
- Full visual and color assessment on-site
- Unbiased written report with recommendations
- Ideal when seller won’t let item leave their premises
Best for: Items found online, on eBay, or in shops
Full Service · Negotiation
Personal Negotiator
฿7,000 or 5%
Whichever is higher · For purchases above US$2,000
I act as your personal buyer: verify authenticity, check wholesale pricing, and negotiate on your behalf.
- Full gem identification and treatment check
- Wholesale price benchmarking via our network
- Jewelry component cost breakdown (metal, stones, labour)
- Sourcing alternative if item is overpriced
- Negotiation support on final price
Best for: Purchases above US$2,000 likely pays for itself
Process
How it works
From first message to your written findings in as little as one day.
1
Contact me
Send a WhatsApp or email with the item details, your budget, and what you’d like verified.
2
Choose service
I’ll recommend the right service level based on the item value and what you need to know.
3
Inspection
We meet at my Bangkok office or I visit the seller. Inspection typically takes 30 to 60 minutes.
4
Written report
You receive a clear, plain-English summary of my findings by email with my honest recommendation.
Real example – On-site visit service
Pink sapphire listed in Bangkok, buyer in Sydney, Australia
Claimed: Vivid Hot Pink
Claimed: Unheated, Sri Lanka
Found on eBay
A buyer in Sydney found what appeared to be a stunning pink sapphire listed by a Bangkok seller. Before committing, she booked the On-site Visit service.
Tarun’s findings (excerpt):
“The item is actually much lighter in shade than shown in the pictures. In my expert opinion, the color is ‘pinkish purple’ not ‘vivid pink.’ The item also lacks third-party certification, so treatment status cannot be confirmed. I suspect Madagascar origin, not Sri Lanka. I would not recommend purchasing at the listed price without independent certification.”
“The item is actually much lighter in shade than shown in the pictures. In my expert opinion, the color is ‘pinkish purple’ not ‘vivid pink.’ The item also lacks third-party certification, so treatment status cannot be confirmed. I suspect Madagascar origin, not Sri Lanka. I would not recommend purchasing at the listed price without independent certification.”
Why us
Not a lab report. Something better.
Labs identify gemstones. I tell you whether the deal is actually worth it.
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Lab-grade instruments
Refractometer, microscope, spectroscope the same tools GIA uses not just a visual guess.
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No sales agenda
I’m not selling you a gemstone. My incentive is giving you an honest assessment, not closing a deal.
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Wholesale price check
Labs don’t tell you if the price is fair. I can benchmark against our 50-year wholesale network.
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Works from anywhere
You can be in London, New York or Tokyo. If the item is in Bangkok, I can inspect it for you.
Client reviews
What clients say
Perfect 5-star ratings on Google and TripAdvisor from clients across four continents.
★★★★★
“Tarun navigated me through choosing a ruby without the pressure. Gave me a wealth of knowledge to help me make the right choice for my expectations.”
★★★★★
“I couldn’t be happier with the ring Tarun made for me. He was exceptionally professional and provided a service above and beyond my greatest expectations.”
★★★★★
“He was able to search through his deep connections in Bangkok to source a beautiful 2-carat sapphire. I’d recommend him to anyone looking for a gemstone.”
Your consultant
Tarun Gupta
GIA Graduate Gemologist · AJP™ · Bangkok
My grandfather founded Thai Native Gems in Bangkok in 1959. Before joining the family business I earned my GIA Graduate Gemologist degree the highest internationally recognized gemological credential. I’ve been helping buyers worldwide avoid getting cheated since 2009.
Every consultation is performed personally by me. Not staff. Not subcontractors.
Every consultation is performed personally by me. Not staff. Not subcontractors.
✓ GIA Graduate Gemologist
✓ AJP™ Certified
✓ 65 years family in trade
✓ Perfect 5★ Google
✓ 2M+ YouTube views
FAQ
Common questions
Why do you charge a fee when you give so much free information on the blog?
The blog can educate you, but there’s no substitute for hands-on expertise. Just as you can read about the law online but still need a lawyer for your specific situation, personal consultation requires time, instruments, and professional judgment that goes beyond any article.
How is this different from getting a GIA or AGL lab certificate?
Lab reports verify identity and treatment status but they don’t tell you if the price is fair, if the color description is accurate in person, or if you could source something better. I combine gem ID with wholesale price benchmarking and honest deal assessment.
I’m not in Bangkok. Can you still help?
Yes. If the item is located in Bangkok, I can inspect it on your behalf regardless of where you are. Many clients are based overseas and use the on-site visit service to verify items before committing.
How quickly can you do an inspection?
For in-office inspections, same-day or next-day is usually possible. On-site visits are typically scheduled within 2–3 business days. WhatsApp me and we’ll find the fastest option for your situation.
What if the gemstone turns out to be misrepresented?
You’ll have my written professional assessment, which you can use to renegotiate, walk away, or dispute the seller’s claims. Many clients find the consultation fee saves them far more than it costs.
Ready to buy with confidence?
Get in touch before you commit. A 5-minute message could save you from a costly mistake.
💬 WhatsApp Tarun Now ✉ Send an Email