Natural Green Peridot Rough · 1.235 ct · For Faceting

$4.36

Natural green Peridot rough for faceting weighing 1.235 ct, featuring an attractive green colour, good transparency and promising facet-quality material. Measuring 8.3 × 4.9 × 4.2 mm, this specimen is recorded as unheated and untreated and offers good potential for orientation, yield planning and individual faceting.

1 in stock

NGB Reference: NGB-000204 SKU: RO-PERI025GR-002-393 Category: Tags: , , , Brand:
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This individually documented natural green Peridot rough weighs 1.235 carats and is presented as facet-quality material suitable for lapidary evaluation and potential faceting. The specimen displays an attractive natural green colour, good transparency and a pleasing natural luster.

Measuring approximately 8.3 × 4.9 × 4.2 mm, this rough gemstone provides usable depth and material for evaluating the most appropriate orientation, final shape and faceting design. Its natural form allows the cutter to balance colour, transparency, internal characteristics and expected cutting yield.

The material is transparent, an important characteristic for faceting potential. Good transparency allows light to travel effectively through the rough and provides the basis for producing an attractive finished gemstone when orientation and cutting are carefully planned.

The specimen also shows good green colour and luster, contributing positively to its potential as faceting material. When evaluating rough Peridot, particular attention should be given to colour distribution, internal inclusions, fractures, available depth and the orientation required to maximise both optical performance and usable yield.

Peridot is the gem-quality green variety of olivine and is valued for its characteristic yellowish-green to deeper green colour range. Unlike many gemstones, Peridot’s colour is inherent to its mineral composition rather than commonly produced through treatment.

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 attractive green colour, transparent body and good natural luster, this 1.235 ct natural Peridot rough offers promising potential for individual faceting. Its compact dimensions provide the cutter with the opportunity to plan a finished gemstone around colour retention, optical performance and efficient use of the available material.

Overall Score: 89.0/100

NGB Grade: Very Good

Quality Evaluation

Natural Characteristics18.0/20
Inclusion Profile18.0/20
Faceting Potential18.0/20
Usable Yield / Shape Potential17.0/20
Overall Rough Quality18.0/20

Evaluation Notes

The individual NGB evaluation identifies overall rough quality as a particular strength, while usable yield and shape potential is the principal limiting factor in the overall assessment. Natural characteristics, inclusions, orientation potential and usable material are considered in relation to the intended use of the rough. The resulting NGB grade is Very Good.
This natural Peridot rough presents a strong faceting-quality profile, combining attractive green colour, good transparency and favourable material dimensions. The specimen offers good orientation and yield potential, while only limited natural inclusions or fissures are expected to influence cutting decisions. Its colour, transparency and overall material quality support a very good prospect for producing an attractive finished gemstone.

Species

Olivine

Gemstone Variety

Peridot

Color

Green

Treatment

Unheated, Untreated

Transparency

Transparent

Gemological Properties

Carat Weight1.235 ct
Dimensions8.3 × 4.9 × 4.2 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 inclusions, fine internal fissures and subtle growth features may be present within the transparent Peridot rough. Minor surface irregularities can also occur. These characteristics form part of the specimen’s natural crystal growth and should be considered during orientation, yield planning and faceting.

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