5.20 Carats, Vivid red, Mozambique, Oval Shape, Untreated Ruby, GRS
- GRS Report Number: GRS2024-010788
- Award Number: 4829
- This important ruby is distinguished by a very rare combination of size, a fine vivid red color variety, very
good brilliance and transparency, and well-balanced proportions.
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Description
Award Number: 4829
- Dimensions (MM): 12.28×8.78×5.11
- Weight:5.20 Carats
- Color: vivid red
- Comments: no indication of thermal treatment
- Transparency: Transparent
- Shape: Oval
- Cut: brilliant/step （4）
- Origin: Mozambique
Appendix
GRS Laboratories examined a 5.20 ct natural Ruby, described in report number GRS2024-010788,
demonstrating very good characteristics worthy of a dedicated mention.
This important ruby is distinguished by a very rare combination of size, a fine vivid red color variety, very
good brilliance and transparency, and well-balanced proportions.
Analytical and advanced testing traces the origin of this gemstone to the mines of Mozambique, the mining
area currently producing the largest and most significant rubies. The fascinating internal world of classic
Mozambican ruby inclusions can be clearly witnessed in this particular gemstone. At the time of testing, it was
concluded that the gemstone was spared from thermal enhancement.
The combination of very good attributes that this ruby displays was concluded to be important. This vivid red
Mozambique Ruby is reminiscent in color saturation of “GRS-type Pigeon’s blood ruby” (without strong
fluorescence). The vivid red color radiates harmoniously in tone and color saturation. A high degree of
lapidary craftsmanship adds value to the nature of this gemstone.
Untreated rubies of such size and high quality are very rare.
Dr. A. Peretti
