A friend just came back from Bangkok and related an incident whereby their whole group bought orange sapphires and other gems that was supposedly available only once a month/year or on the King's birthday. Well becos i never heard of an orange sapphire, i googled and came across this link ...
http://www.bangkokscams.com/scams-in-bangkok/yindee-lapidary-co.-ltd-2.html

I realised my friend had been scammed and this scam has been going on for the past 1-2years(??) after reading this blog. The scenario is the same and many Malaysians, Singaporeans and other tourists have fallen for this scam which is kinda elaborate and well thought out!!In a nutshell, this is what happens...

1. Meets a lady/man in front of central world/any shopping mall on a sunday at 10am who starts paying homage to a statue of Rama V. Tells you once a month, the shops are opened only at 11am. Suggest you go to Lucky Temple and be blessed instead of hanging around till 11am.
2. While contemplating going or not, another English speaking man who says he is the manager at world trade centre, comes up and tells you that you will be blessed if you go to the Lucky Temple which is only open once a month to public.
3. Gets you a Tuk-Tuk costing 20/30 Baht
4. Meets another well dressed/suited guy in Lucky Temple
5. Telling you the 'unbelievable miracle' of buddha's heart (Orange Sapphire). Gives you examples of the "miracles". Like he mentioned about his mom having an illness where her bone on her leg is crooked and is limbed, and after his wife gave her some drinks with 'Buddha's heart', she was able to stand up and walk miraculously 8 years ago. He even mentioned about the 3 surviving victims at the AirAsia aircrash at Krabi where the 3 surviving victims carryied the 'Buddha's Heart'.
6. Mentions about Malaysian Poh Kong daughter-in-law and even Maybank's top management personnel(shows you the call card) to further brain-wash you. Also mentions that big shots in luxury cars who go to the temple to pray as early as 6am in the morning.
7. Telling us it is the last day of sale in Yindee Lapidary co. Ltd for 30% discount and you can get your own "lucky gem" there.
8. Yes, finally practically the whole group(maybe 10 out of 14 of them) bought jewellery of around few thousand RM each. Other jewellery shops like Blue Dragon Export etc are also involved in this scam.
9. In short, you have just been scammed by an elaborate network that involves at least 3people who are well dressed and speak English and the tuk-tuk drivers are also involved.

If you are a victim, and you are still in Bangkok, you can go to Bangkok Tower at New Petchburi Road to seek assistance from the tourist police division. The resolution process at the tourist police division is very quick and hassle-free. If you have paid by credit card, try and see if you can get it voided. Definitely if it had costed you more than RM2K, it may be worthwhile to go back to Bangkok via Airasia and get a refund by making a police report. The gem you bought is most likely a piece of coloured glass.
After googling somemore, looks like Thailand is on track to becoming the Land of Scams not Land of Smiles which is a pity. So next time you are in Thailand, do beware of the next Thai that comes up to you on the street with a smile and telling you how lucky you are....!!