Natural Green Peridot Rough · 2.189 ct · For Faceting

$7.82

Natural Peridot rough for faceting weighing 2.189 ct, featuring an attractive green colour and transparent appearance. Measuring 6.8 × 6.7 × 5.4 mm, this specimen offers strong faceting potential and is recorded as unheated and untreated.

1 in stock

NGB Reference: NGB-000208 SKU: RO-PERI025GR-002-399 Category: Tags: , , , Brand:
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This individually documented natural Peridot rough weighs 2.189 carats and is presented as facet-quality material suitable for lapidary evaluation and potential faceting. The specimen displays an attractive natural green colour with a transparent appearance, giving the material strong potential for a finished gemstone.

Measuring approximately 6.8 × 6.7 × 5.4 mm, the rough has a compact but relatively deep form that provides useful material for assessing orientation, potential yield and the most appropriate final cutting design.

The material is transparent, allowing the cutter to evaluate internal characteristics, colour distribution and usable depth before faceting. Its good green colour is an important positive feature, as colour retention and evenness will play a major role in the final appearance of the finished Peridot.

When evaluating Peridot rough for faceting, careful consideration should be given to natural inclusions, internal fissures, crystal shape and the relationship between weight retention and optical performance. Proper orientation can help maximise usable yield while preserving attractive colour and transparency.

Peridot is the gem-quality green variety of olivine and is valued for its characteristic yellowish-green to green colour. Unlike many gemstones, Peridot is commonly encountered without colour-enhancing treatment, and its natural green colour is inherent to the mineral composition.

This specimen is recorded as unheated and untreated, with no gemstone enhancement documented for the material. Its colour, transparency and internal characteristics are therefore presented in their naturally recorded state.

As a natural rough gemstone, the specimen may display internal inclusions, fine fissures, growth features or surface irregularities. These characteristics form part of the geological history of the material and should be carefully considered during orientation and cutting.

With its 2.189 ct weight, attractive green colour, transparent body and useful depth, this natural Peridot rough offers promising potential for individual faceting. Its natural form provides the cutter with the opportunity to balance colour retention, optical performance and efficient use of the available material.

Overall Score: 90.0/100

NGB Grade: Excellent

Quality Evaluation

Natural Characteristics18.0/20
Inclusion Profile18.0/20
Faceting Potential18.0/20
Usable Yield / Shape Potential18.0/20
Overall Rough Quality18.0/20

Evaluation Notes

The individual NGB evaluation identifies usable yield and shape potential as a particular strength. Natural characteristics, inclusions, orientation potential and usable material are considered in relation to the intended use of the rough. The resulting NGB grade is Excellent.
This natural Peridot rough presents an excellent overall faceting-quality profile, combining attractive green colour, good transparency and favourable depth for orientation and yield planning. The material offers strong potential for an efficiently proportioned finished gemstone, while only limited natural inclusions or fissures are expected to influence the cutting strategy. Its colour, transparency and overall rough quality support a high-quality faceting outcome.

Species

Olivine

Gemstone Variety

Peridot

Color

Green

Treatment

Unheated, Untreated

Transparency

Transparent

Gemological Properties

Carat Weight2.189 ct
Dimensions6.8 × 6.7 × 5.4 mm
TransparencyTransparent
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 Descriptiongreen
Transparency NotesTransparent rough material with good light transmission, suitable for evaluating potential facet orientation.
Natural CharacteristicsNatural rough crystal structure with internal features and shape variations typical of an individual Peridot rough specimen. Natural inclusions, fine internal fissures and subtle growth features may be visible within the transparent Peridot rough. Minor surface irregularities are also present as part of the natural crystal form. These characteristics should be considered during orientation, yield planning and faceting.

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