Lotus Gemology produces what we feel are the finest gem testing reports in the gemological field. Each report includes gemstone identification, treatment identification and, in certain cases (mainly ruby, sapphire, spinel, emerald and jadeite jade) origin determination.

Gem Testing • Gemstone Identification • Origin Determination • Treatment ID Reports

The Lotus Hardcover Report is simply the finest gemological report in the world. A Bangkok gemologist  

Lotus Reports and Prices

Lotus Gemology produces what we feel are the finest gem testing reports in the gemological field. Each report includes gemstone identification, treatment identification and, in certain cases (mainly ruby, sapphire, spinel, emerald and jadeite jade) origin determination.

Download a pdf of our complete price list here. Scroll down to see report samples.

The Lotus Gemology softcover report. Compact and affordable, it puts all of the important information about a gem at your fingertips.

Lotus Softcover Reports

The compact four-page Lotus softcover report includes:

• A description of the stone
• Gemstone identification
• Color Type (where applicable)
• Origin (where applicable)
• Care instructions

Download a sample PDF report here:

Lotus Hardcover Reports: The New Standard

Lotus Hardcover reports are elegant, highly customizable 15+ page reports with full-color photographs created to celebrate the rarity and value of gemstones. These reports enhance the value of your most precious stones by reinforcing the rarity and beauty of these gifts of nature. The Gold cover is strictly reserved for gems that are completely natural, with no enhancements beyond ordinary cutting and polishing. The hardcover report includes all of the identification information in the softcover report, with the addition of more extensive information and imagery. These are customized to suit the subject of the report and can include information on:

• 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.

The Lotus Gold hardcover report is available for ruby, sapphire, spinel, jade and a handful of other stones. Lotus Gemology's Richard Hughes designed the world's first deluxe lab report, a concept that has been widely copied by other labs.

Download a sample hardcover report here:

Lotus Gold, Silver, and Black

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.

Lotus Gold, Silver and Black softcover reports
Lotus Gemology's report covers are color coded so that one can quickly understand the identity of the gem. Rather than hiding treatment information behind arcane codes, Lotus Gemology is the world's only gem lab that makes clear the treatment status. Lotus Gold is reserved for untreated gems, Lotus Silver for gems treated by industry-standard techniques and Lotus Black for heavily treated or man-made gems.

Color Types

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

Origin opinions are provided free-of-charge for all reports when our testing reveals sufficient gemological evidence to make an origin determination.

Lotus Custom Reports

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. 

Opt for the addition of a "Rough to Cut" layout to hardcover reports to display the journey a stone goes through from rough to finished gem.

Upon request we can include a Bespoke Photo with a hardcover report. One option is to highlight the gem with an extra photo with a unique background.

Another Bespoke Photo option is to add an inclusion photo to a hardcover report. Each inclusion acts as a "fingerprint" of the stone, displaying its individual beauty both inside and out.

Lotus Gemology can create customized hardcover reports for layouts of loose stones that highlight the beauty and rarity of a matched pair or suite. Contact us directly for a quote.

Lotus Gemology hardcover reports can beautifully display matched pairs of suites of stones that have been mounted in jewelry. Contact us directly for a quote.

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.

* Services will be deducted from each member’s balance. Balances are held for two years and are non-transferable and non-refundable.

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Clients that fail to bring in a receipt for pick-up will be charged a fee of ฿500.