- Stone14
- Reports3
-round-purple-amethyst-3.1700-cts-k8939-1.jpg?d=200x200&v=20250102011503)
-round-purple-amethyst-3.1700-cts-k8939-1.jpg?d=200x200&v=20250102011503)
-round-purple-amethyst-3.1700-cts-k8939-lifestyleimage-1.jpg?d=200x200&v=20250113054237)
-round-purple-amethyst-3.1700-cts-k8939-lifestyleimage-2.jpg?d=200x200&v=20250113054237)
-round-purple-amethyst-3.1700-cts-k8939-lifestyleimage-3.jpg?d=200x200&v=20250113054237)









3.17 Ct. Amethyst from Ceylon (Sri Lanka)
This loose stone is available to ship now
Item ID: | K8939 |
|---|---|
Dimensions (MM): help | Length: 9.91 Width: 9.95 Height: 6.25 |
Weight: | 3.17 Ct. |
Color: help | Purple |
Color intensity: help | Intense |
Clarity: help | Slightly Included |
Shape: help | Round |
Cut: | Mixed Brilliant |
Cutting style: | Faceted |
Enhancements: help | Heat Treated |
Origin: help | Ceylon (Sri Lanka) |
Per carat price: help | $14 |
This is a technically refined, eye clean oriented 3.17 carat round amethyst, presented by The Natural Gemstone Company, with calibrated dimensions of 9.91 by 9.95 by 6.25 millimeters, delivering a depth proportion that measures approximately 62.9 percent. The outline is strictly round and the gem has been fashioned with a mixed brilliant faceting scheme, combining a brilliant style crown with a modified step pavilion, a design that balances scintillation and color saturation. The cutter has executed carefully controlled facet junctions, precise symmetry and an excellent polish, producing crisp facet planes and minimal surface irregularities. The typical mixed brilliant design for a round of this scale generally employs mid to upper 50s facet counts, which here optimize both white light return and the dispersion characteristic of quartz, while maintaining strong color presence across the table and facets. With a crown design that moderates table size and crown height, the faceting angles have been selected to maximize internal reflection within the refractive index window of quartz, which for amethyst lies roughly between 1.544 and 1.553, and to present a predictable and lively face up appearance when set in jewelry.
Color is the primary attribute of this piece, evaluated as intense in color intensity, and it displays a saturated violet with stable chromatic hue across the stone, with neither excessive overtones nor unwanted brown zoning. The heat treatment enhancement applied is a standard, stable thermal regimen used in amethyst to deepen purple saturation and to even out tone distribution, without introducing instability or unusual optical effects. Heat treated amethyst from Ceylon, Sri Lanka, often yields a purer violet with slight blue secondary tones, and this example shows such a refined balance between red and blue components of violet that reads as vivid and vivid across different lighting conditions. Clarity is graded as slightly included at eye level, indicating the presence of small internal features that do not materially interrupt light performance or structural integrity, but that do provide a fingerprint of natural origin which many collectors value. These inclusions are subordinate to the overall visual impact thanks to the cutter s facet placement, which directs attention to color and brilliance. Specific gravity for quartz near 2.65 and low birefringence of about 0.009 inform why the mixed brilliant approach is effective, locking color into the body of the gem while allowing lively facet contrast and controlled dispersion, attributes that connoisseurs recognize as signs of high caliber cutting for colored stones.
When placed in the broader context of historic gemstones, this amethyst carries qualities that recall the reasons amethyst was historically prized by civilizations from ancient Greece through European courts, while offering refinement in proportion and optical performance that only modern lapidaries can achieve. Historically, deep violet amethysts were frequently incorporated into signet stones, ecclesiastical rings and royal jewels, prized for their saturated hue and symbolisms of piety and sovereignty. This 3.17 carat Ceylon stone, with its intense and stable violet, evokes the visual weight of those historic gems, while surpassing them in standardized cut precision and surface finish. It is more appropriate to compare by character than by provenance, and in that sense this stone shares the vivid chroma that made ancient carved amethysts and later regal specimens notable, while delivering a level of optical regularity akin to well executed sapphires and other high grade colored gemstones which collectors have historically sought for their pure color and clean appearance. The combination of substantial carat weight, near ideal depth proportion, mixed brilliant faceting and excellent polish creates a gem that is both wearable as a centerpiece in fine jewellery and worthy of curatorial interest.
The Natural Gemstone Company presents this amethyst as a technical and aesthetic offering, aimed at buyers who appreciate faceting strategy, optical performance and documented origin. Its Ceylon origin, controlled heat augmentation, balanced mixed brilliant anatomy and slightly included clarity create a transparent value proposition, where natural characteristics sit alongside deliberate human intervention to produce a consistent, attractive and durable gem. For connoisseurs who value the lineage of purple gemstones in history, and for jewelers seeking a reliable, well proportioned round amethyst for a high impact setting, this stone represents a sound selection, combining historical resonance with contemporary lapidary excellence.




-round-purple-amethyst-3.1700-cts-k8939-1.jpg?d=750x750&s=ngc&v=20250102011503)
-round-purple-amethyst-3.1700-cts-k8939-lifestyleimage-1.jpg?d=750x750&s=ngc&v=20250113054237)
-round-purple-amethyst-3.1700-cts-k8939-lifestyleimage-2.jpg?d=750x750&s=ngc&v=20250113054237)
-round-purple-amethyst-3.1700-cts-k8939-lifestyleimage-3.jpg?d=750x750&s=ngc&v=20250113054237)
















