Connoisseur's guides. How to recognize fine ruby, sapphire, and spinel with information on color and clarity.
Origin. Maps, photos, and further details about the stone's origin.
Pairs and sets. We describe the rarity factor and work that can go into composing matched suites.
Additional photos. Inclusion photos, photos of suites or jewelry sets, and other additional images available on request.
Padparadscha. A special supplement is included for padparadscha sapphire.
Special Report Appendices. Customized special comments on the finest stones. These comments are only issued at the discretion of Lotus gemologists, and are only available with hardcover reports.
Gold reports are issued for natural gems with no indications of any enhancement save for ordinary cutting and polishing.
Silver reports are issued for natural gems that have been enhanced to better display their beauty.
Black reports are issued for synthetic and/or heavily treated gems, including lead glass-type hybrid stones.
Learn more about our enhancement codes here.
Color types are included free-of-charge for all reports for stones that fall within Lotus' color type ranges. To learn more, see the Lotus Gemology Guide to Color Types.
Origin opinions are provided free-of-charge for all reports when our testing reveals sufficient gemological evidence to make an origin determination.
Customized hardcover reports are available on request for stones we determine to be of particularly significant value and rarity. The scope of these reports can vary greatly depending on customer requirements. For more information, please contact us directly.
All Lotus Identification Reports include a credit card-sized mini-report for portability, at no extra charge.
All prices are listed in Thai baht and are inclusive of 7% VAT.
Special comments are issued at the discretion of Lotus Gemology gemologists. They are only available for hardcover reports on ruby, sapphire, & spinel.
* Services will be deducted from each member’s balance. Balances are held for one year and are non-transferable and non-refundable.
Clients that fail to bring in a receipt for pick-up will be charged a fee of ฿500.