Natural Green Peridot Rough · 5.708 ct · For Faceting

$18.82

Certified natural Peridot rough for faceting weighing 5.708 ct, with a light green colour and transparent to transluscent appearance. Measuring 11.7 × 10.0 × 5.8 mm, this high facet-quality specimen offers substantial usable material for orientation, preforming and individual cutting. Recorded as unheated and untreated.

1 in stock

NGB Reference: NGB-000198 SKU: RO-PERI024GR-002-075 Category: Tags: , , , Brand:
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This certified natural Peridot rough weighs 5.708 carats and is presented as facet-quality material with substantial size and useful proportions for individual cutting. The specimen displays a clear natural green colour and a transparent to translucent appearance, offering the cutter considerable material for orientation and yield planning.

Measuring approximately 11.7 × 10.0 × 5.8 mm, the rough provides a broad face and useful depth. These dimensions offer flexibility when selecting the cutting orientation and final gemstone shape, with scope to balance colour distribution, clarity, optical performance and weight retention.

The material shows a pleasing clear-green colour characteristic of natural Peridot. Because the specimen is translucent rather than fully transparent, careful examination of internal characteristics is important before cutting. Orientation should be selected to make the best use of the clearer areas while avoiding or minimising natural fissures, inclusions or structural features that could influence the finished gemstone.

Its relatively substantial 5.708 ct rough weight is particularly advantageous for faceting, as it provides greater freedom for preforming and shape selection than smaller rough specimens. Final yield will depend on the internal structure, orientation chosen and the amount of material that must be removed during preforming and polishing.

Peridot is the gem-quality green variety of olivine, with its natural green colour resulting primarily from iron within the mineral structure rather than from an artificial colour treatment.

This specimen is recorded as unheated and untreated. Its natural colour and internal characteristics are therefore presented without documented gemstone enhancement.

As with all natural rough material, inclusions, internal fissures, growth features and surface irregularities may be present. These characteristics form part of the specimen’s geological identity and should be carefully assessed when determining the optimal cutting plan.

With its substantial 5.708 ct weight, useful depth and broad natural form, this Peridot rough offers considerable scope for orientation, preforming and individual facet design. Its faceting potential lies primarily in the amount of usable material available and the flexibility it provides for selecting the most favourable cutting direction.

Overall Score: 83.0/100

NGB Grade: Very Good

Quality Evaluation

Natural Characteristics17.0/20
Inclusion Profile15.0/20
Faceting Potential18.0/20
Usable Yield / Shape Potential16.0/20
Overall Rough Quality17.0/20

Evaluation Notes

This natural Peridot rough presents a very good overall faceting-quality profile, with substantial usable material, favourable dimensions and good potential for orientation and yield planning. The lighter green colour is less vivid than more strongly saturated Peridot, which limits overall colour impact, while the translucent body and natural internal characteristics require careful cutting assessment. Despite these factors, the specimen retains solid faceting potential and good overall material quality.

Species

Olivine

Gemstone Variety

Peridot

Color

Green

Shape

Round

Treatment

Unheated, Untreated

Transparency

Translucent

Gemological Properties

Carat Weight5.708 ct
Dimensions11.7 × 10.0 × 5.8 mm
TransparencyTranslucent
ClarityNatural rough material
Refractive Index1.635-1.879 (1651-1660)
Specific Gravity3.2-4.39
Hardness6.5–7 Mohs
Birefringenceapprox. 0.036 — strong and often readily visible in faceted stone
Crystal SystemOrthorhombic
Dispersion0.020
LusterN/A
Color Descriptionclear green
Transparency NotesTranslucent rough material with visible internal structure that should be considered during orientation and preforming.
Natural CharacteristicsNatural rough crystal structure with internal features and a flatter or more elongated form that may influence usable yield. Natural inclusions, fine internal fissures and subtle growth features may be visible within the transparent Peridot rough. The specimen shows a light green body colour and a favourable distribution of usable material, supporting its classification as high facet-quality rough. Minor surface irregularities are present as part of the natural crystal form and should be considered during orientation, yield planning and faceting.

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