The specimen presented is not a diamond; it is a rough green gemstone, most likely a green garnet (such as Tsavorite or Demantoid) or a high-quality green tourmaline crystal in its natural rough form.
The specimen presented is not a diamond; it is a rough green gemstone, most likely a green garnet (such as Tsavorite or Demantoid) or a high-quality green tourmaline crystal in its natural rough form. · Raw, uncut crystal with natural habit showing irregular form and crystal faces.
Not applicable (uncut rough specimen). Cut
Carat
Estimated at approximately 3.5 to 5.0 carats based on visual scale against human skin.
Color
Vivid intense green, characteristic of fine chrome-bearing gemstones.
Clarity
Included (rough stone with internal veiling and fractures typical of raw gemstone material).
Shape
Raw, uncut crystal with natural habit showing irregular form and crystal faces.
Overall Assessment
An exceptionally vibrant, vividly saturated green crystal rough specimen of high commercial and gemological interest.
Cut Quality
Not applicable (uncut rough specimen).
Brilliance
Vitreous to sub-adamantine luster on raw faces, exhibiting moderate light return.
Fire
High dispersion visible if identified as Demantoid garnet, otherwise moderate fire.
Scintillation
Limited in rough form; will display high scintillation once properly faceted.
Proportions
Not applicable to raw rough material.
Symmetry
Asymmetrical natural crystal habit.
Polish
Unpolished natural crystal faces and fracture surfaces.
Fluorescence
Inert to faint, depending on specific mineral species (tsavorite typically shows inert reaction).
Inclusions
Natural feather inclusions, internal fractures, and liquid inclusions typical of unheated rough colored stones.
Blemishes
Natural surface etching, striations on crystal faces, and rough edge chipping.
Origin
East Africa (Kenya or Tanzania) for Tsavorite, or Russia/Namibia for Demantoid.
Treatment Detection
No signs of artificial treatment; appears completely natural and untreated.
Estimated Value
Varies widely by exact mineral identification, ranging from $300 to $1,500 per carat for fine Tsavorite/Demantoid rough.
Certification Estimate
Gemological Institute of America (GIA) Colored Stone Report or SSEF.
Investment Potential
High appreciation potential for fine natural colored gemstone rough of exceptional color and saturation.
Similar Diamonds
Fancy vivid green colored natural diamonds (extremely rare and expensive comparables).
Setting Suggestions
Once cut, best set in 18k yellow gold or platinum with diamond accents to highlight the vivid green hue.
Care & Maintenance
Avoid harsh ultrasonic cleaners and sudden temperature changes; protect from hard impacts.
Interesting Facts
Green garnets like Tsavorite are often colored by trace amounts of chromium and vanadium, the same elements that color emeralds.