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Lotus Gemology

Name: Lotus Gemology
Address: Bangkok, TH
Telephone: +66 (0)2 117 3616
Rating: 4.6

Learn more about us:
http://lotusgemology.com/index.php/about/about-lotus-gemology
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www.LotusGemology.com | new directions in GEM•ology

Lotus Gemology is a laboratory specializing in identification, treatment detection, and origin determination of colored gemstones.

16/06/2026

Stellar spinel. Bands of dislocation needles radiate around a dolomite crystal, identified with micro-Raman spectroscopy, forming a stellate pattern in this spinel.

This inclusion scene was recently featured in the Roskin Report.
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📸 : Billie Hughes/Lotus Gemology
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11/06/2026

We continue to value thoughtful feedback from clients, collectors, and members of the trade.

Reviews may be shared here: https://g.page/r/CTWjnsdi8JAtEAE/review

09/06/2026

Rwanda, 2013.

Rwanda remains one of the lesser-known sapphire producing localities, though basalt related blue sapphire has been recovered, along with smaller amounts of fancy colored sapphire.

We encountered both local miners and Thai sapphire miners working the deposits, reflecting the long-established role of Thailand within the colored stone trade.
A small number of rough samples were obtained for the laboratory reference collection.

Travel through the region also passed tea plantations and mountain forest areas, where some of the last remaining silverback gorillas continue to survive. Although infrastructure in Rwanda has improved considerably in recent years, field conditions outside major routes could still be unpredictable.
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Images: Lotus Gemology
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05/06/2026

Honored to be included in "From Earth to Elegance: Women in the Colored Gemstone Industry," published in InColor magazine.

The feature highlights women working across many areas of the colored gemstone trade, from mining and cutting to gemology, education, and jewelry.

Thank you to the editors for including Lotus Gemology in the series.

04/06/2026

Richard Hughes of Lotus Gemology will speak at the upcoming Swiss Gemmological Society Annual Conference, presenting:

⭐ Describing Color in Gems: A Fool’s Guide

The lecture will examine the challenges of applying color descriptors such as “pigeon’s blood,” “Paraíba,” “Santa Maria,” and “cobalt blue” in a consistent and logical way, alongside a discussion of color science and the use and misuse of color terminology within the gem trade.

22-23 June 2026
Swiss Gemmological Society Annual Conference
Thun, Switzerland

02/06/2026

All five photomicrographs feature green inclusion scenes, each from a different gemstone.

Can you identify each one? Our lab's identifications will be posted tomorrow.
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📸: Lotus Gemology
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28/05/2026

A pair of red spinel earrings by Karen Suen, accompanied by a Lotus Gemology report, achieved HK$230,400 (approx. US$29,000) in the recent Bonhams Hong Kong auction.

The result reflects continued collector interest in fine colored gemstones, and spinel in particular.
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Image: Bonhams

26/05/2026

In the laboratory: the polariscope

Instruments like the polariscope are valuable not because they provide a single answer, but because they add context to the broader examination process.

Optical behavior, internal strain, and crystallographic orientation can all contribute useful information before moving to microscopy and other forms of analysis.

Laboratory gemology depends on the correlation between observations rather than any single reaction.

19/05/2026

Rounded crystal edges, elongated channels, and the bubbly texture of fingerprint inclusions provide evidence of heat treatment in these Montana sapphires.
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📸: Billie Hughes/Lotus Gemology
Samples courtesy Michael Gray
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18/05/2026

Colombian emerald, spinel, and alexandrite pieces accompanied by Lotus reports in the upcoming Bonhams Hong Kong sale.

Among the featured lots are red spinel earrings by Karen Suen and a carved alexandrite fish ornament displaying distinct color change under different lighting conditions.

The auction takes place on 24 May.
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Images: Bonhams