Burmese peridot is peridot — the gem-quality form of the magnesium iron silicate mineral forsterite — recovered from localities within Myanmar, most notably in and around the celebrated Mogok Stone Tract of Mandalay Region. Valued in the trade for its tendency toward vivid yellowish-green to near-pure green hues with comparatively little of the brownish secondary tone that diminishes material from some other sources, Burmese peridot occupies a respected if modest position in the broader peridot market. Production has historically been limited, and fine specimens are genuinely scarce relative to the large commercial outputs of Pakistan, the People's Republic of China, and the United States (Arizona).

Mineralogy and Gemological Properties

Peridot is the gem variety of forsterite, the magnesium-rich end-member of the olivine solid-solution series (Mg₂SiO₄ to Fe₂SiO₄). Its characteristic green colour arises from the presence of ferrous iron (Fe²⁺) substituting for magnesium within the crystal structure; no treatment is required or known to induce or alter this colour. The refractive indices of peridot are notably high for a singly refractive-appearing stone, with birefringence strong enough (approximately 0.036) to produce a visible doubling of back facets in larger specimens — a useful diagnostic feature. Specific gravity is approximately 3.34, and hardness on the Mohs scale is 6.5 to 7, making peridot moderately susceptible to abrasion in everyday wear.

The iron content that produces colour also governs the precise hue: lower iron concentrations tend toward purer, more saturated greens, while higher concentrations shift the colour toward yellow-green or introduce brownish undertones. Burmese material is frequently cited in trade literature as exhibiting a relatively balanced iron content that favours clean, saturated green without excessive yellow or brown — though this is a generalisation, and individual stones vary considerably.

Origin and Geology

The Mogok Stone Tract, a deeply weathered metamorphic and metasomatic terrain in Mandalay Region, is best known globally for its ruby and sapphire production, but it yields a wide range of gem species from both primary marble-hosted deposits and secondary alluvial and eluvial gravels. Peridot occurs within this geological context, typically associated with basic and ultrabasic igneous rocks — particularly peridotite and dunite bodies — that are intruded into or juxtaposed against the older metamorphic sequence. Gem-quality forsterite crystals form within these ultrabasic environments, and erosion liberates them into the gravel deposits (byon) worked by local miners.

Beyond Mogok, peridot has been reported from other localities within Myanmar, though detailed published data on secondary Burmese sources is limited. The Mogok association remains the primary reference point in gemmological and trade literature when Burmese origin is claimed for peridot.

Colour and Quality

The most desirable peridot of any origin displays a strong, pure green with moderate to high saturation and minimal brown or grey modifiers. Burmese material has a reputation — supported by descriptions in trade literature and by the experience of dealers who have handled Mogok goods — for achieving this colour profile more consistently than, for example, the abundant Chinese production (which can trend more yellow-green) or some Arizona material (which tends toward a golden or olive green). Pakistani peridot from the Sapat Gali and Nanga Parbat localities in Khyber Pakhtunkhwa is the primary benchmark for large, fine-colour stones in the contemporary market, and it is against Pakistani material that Burmese peridot is most often compared.

In terms of clarity, peridot as a species commonly contains characteristic inclusions: lily-pad stress fractures surrounding small chromite or other mineral crystals, and disc-like fluid inclusions sometimes called lotus leaves or water lily inclusions. Eye-clean Burmese peridot of fine colour represents the upper tier of the variety.

Market Position and Origin Premiums

Unlike Burmese ruby or Burmese sapphire — where a credible Mogok or Myanmar origin attribution can dramatically affect value, and where major gemmological laboratories routinely issue geographic origin reports — peridot does not benefit from a comparable origin premium in the mainstream market. GIA and other leading laboratories can characterise peridot gemologically but do not routinely offer geographic origin determinations for the species, in part because the geochemical and inclusion fingerprints that allow reliable origin separation in corundum or emerald are less well established for peridot across its global source localities.

The practical consequence is that Burmese peridot is priced primarily on its intrinsic qualities — colour saturation, clarity, cutting quality, and carat weight — rather than on a documented provenance premium. A fine, well-cut Burmese peridot of two carats or more in pure green will command a strong price, but that price reflects the stone's appearance rather than a certified origin. Dealers and collectors with direct knowledge of Mogok goods may informally recognise and value Burmese material, but this remains a matter of trade expertise rather than laboratory-verified attribution.

Supply is a further constraint. Myanmar's gem sector has faced significant disruption from political instability, export restrictions, and international sanctions at various points in recent decades, limiting the flow of Burmese peridot — along with other Burmese gem materials — into international trade channels. This scarcity, while not translating into a formal origin premium, does mean that fine Burmese peridot is genuinely uncommon in the market.

Comparison with Other Sources

• Pakistan (Sapat Gali, Nanga Parbat): The dominant source for large, fine-colour peridot since the 1990s. Pakistani stones can reach exceptional sizes and display strong green colour; they set the commercial benchmark for top-quality peridot globally.
• China (Hebei Province): The largest volume producer; material tends toward yellow-green and is heavily represented in the commercial and lower price tiers.
• United States (San Carlos Reservation, Arizona): A significant commercial source producing smaller stones with a characteristic golden or slightly brownish green; also notable for the historic St. John's Island (Zabargad) material, which is now largely exhausted.
• Egypt (Zabargad / St. John's Island): The oldest known peridot source, worked since antiquity; production is now negligible, but historic material is of considerable interest to collectors.
• Myanmar (Mogok): Limited production; colour quality frequently cited as among the finest, but supply constraints and the absence of routine origin certification limit its market profile.

In the Trade

Burmese peridot appears occasionally in specialist auction lots and in the inventories of dealers who focus on Mogok goods or on fine peridot specifically. It is rarely identified as such in mainstream retail, where provenance documentation for peridot is not standard practice. Collectors seeking Burmese material should request whatever documentation of origin is available — ideally a dealer's written statement of provenance and, where possible, any accompanying gemmological report — while understanding that laboratory-certified origin is not currently a routine feature of the peridot market. The stone's intrinsic qualities remain the primary basis for evaluation.

Further Reading

• GIA Gem Encyclopedia: Peridot — gia.edu
• International Gem Society: Peridot — gemsociety.org