Hi Alexk.

In Doha, accept diamond I have no idea, may in big jwell shops. But price will be very high. Just few clues which one you should buy according to your month (birthstone)

Jan-Garnet
Feb-Amethyst
March-Bloodstone/Aquamarine
April-Diamond
May-Emerald
June-Moonstone/Pearl June
July-Ruby
Augt-Sardonyx
Sept-Sapphire
Oct-Opal/Tourmaline
Nov-Topaz
Dec-Turquoise/Zircon

In case if you need any guidance let me know. I may be able to arrange….

Regards,