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natural carnelian
Natural Carnelian · 12.25 ct · Oval · Rose Cut
Natural Carnelian · 12.25 ct · Oval · Rose Cut
Natural Carnelian · 12.25 ct · Oval · Rose Cut
  1. natural carnelian
  2. Natural Carnelian · 12.25 ct · Oval · Rose Cut
  3. Natural Carnelian · 12.25 ct · Oval · Rose Cut
  4. Natural Carnelian · 12.25 ct · Oval · Rose Cut

Natural Carnelian · 12.25 ct · Oval · Rose Cut

€ 78,00

Natural carnelian · 12.25 ct · Oval · Rose Cut · Orange · Treatment: No indication of treatment

This Carnelian faceted gemstone weighs 12.25 carats. This orangy red, oval shape stone, is rose cut and is size 17.8 x 13.1 x 6.8 mm.
The best-known variety of chalcedony is carnelian. It ranges in color from yellow-orange to rich, near reddish orange, to orangey brown, and varies from semi-opaque to highly translucent

1 in stock

NGB Reference: NGB-000891 SKU: FA-CHA024CA-001-003 Category: Brand:
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This individually documented natural Carnelian is presented by Natural Gems Belgium with its specimen-specific identification, measurements and recorded characteristics. Natural inclusions, color zoning and surface features may occur as part of the individual character of natural gemstone material.

Product Details

Species: Quartz
Gemstone Variety: Chalcedony – carnelian
Carat Weight: 12.25 ct
Dimensions: 17.8 × 13.1 × 6.8 mm
Color: Orange
Color Description: orangy red
Shape: Oval
Cut: Rose Cut
Clarity: I
Transparency: Opaque
Luster: for general impression take a look at the pictures

NGB Evaluation

Overall Score: 79/100
Grade: Good
NGB 2.0 faceted evaluation: color 17/20, clarity 12/20, cut 17/20, optical performance 16/20, overall appeal 17/20. Overall 79/100 (Good). Assessment uses the product-specific recorded identification, clarity, cut/symmetry/polish observations and visual-quality descriptors.

Overall Score: 63/100

NGB Grade: Fair

Quality Evaluation

Color17.0/20
Clarity14.0/20
Cut16.0/20
Optical Performance16.0/20
Overall Appeal16.0/20

Evaluation Notes

Fair quality carnelian gemstone, with good cut, good size, and rougher finishing, the natural inclusions providing a display of different tones.

Species

Quartz
Gemstone Variety

Chalcedony
Gemstone Sub-variety

Carnelian
Color

Orange
Shape

Oval
Cut

Rose Cut
Treatment

Unheated, Untreated
Transparency

Opaque

Gemological Properties

Carat Weight12.25 ct
Dimensions17.8 × 13.1 × 6.8 mm
TransparencyOpaque
ClarityI
Refractive Index1.535 – 1.539
Hardness6.5–7 Mohs
Birefringence0.003 – 0.009
Crystal SystemCubic
LusterWaxy to resinous
Color Descriptionorangy red
Transparency NotesOpaque; assessed together with the specimen-specific clarity and internal characteristics.
Natural CharacteristicsI clarity profile -included

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