- Stone15
- Reports3
6.26 Ct. Cabochon Semi-Black Opal from Australia
This loose stone ships by Feb 15
Item ID: | K10736 |
|---|---|
Dimensions (MM): help | Length: 13.34 Width: 10.14 Height: 7.79 |
Weight: | 6.26 Ct. |
Color: help | Multi Color |
Color intensity: help | Intense |
Clarity: help | Not Applicable |
Shape: help | Oval |
Cut: | Cabochon |
Cutting style: | Cabochon |
Enhancements: help | No Enhancement |
Origin: help | Australia |
Per carat price: help | $512 |
This semi black opal from Australia, presented by The Natural Gemstone Company, is a 6.26 carat oval cabochon with dimensions of 13.34 x 10.14 x 7.79 mm. The gem is opaque, with an intense color intensity and an excellent polish that brings out a vivid play of color in blue and green spectral tones. As a cabochon cut, the dome has been shaped to maximize the opal’s internal diffraction, creating broad flashes and a dynamic mosaic pattern across the surface. In opal grading terms the most important attributes here are body tone, play of color, and stability. The semi black body tone deepens the perceived saturation of the play of color, producing stronger contrast than would be seen in a light opal. Clarity for opal is addressed differently than for faceted gems, and this piece shows a clean appearance at normal viewing distances with no obvious fractures or potch interruptions that would interrupt the color flow, supporting both aesthetic appeal and durability.
No enhancement has been applied to this opal, which is a key factor for educated buyers seeking natural material with intrinsic value. Untreated Australian semi black opals command a premium due to their rarity and the superior color contrast afforded by the darker base. The weight of 6.26 carats and the practical oval proportions make this stone well suited for a fine ring or a striking pendant, offering both presence and comfortable wearability. The excellent polish increases light return and provides a smooth surface resistant to everyday handling, while the cabochon dome protects the internal structure better than a lower profile cut. For care, avoid extreme heat, prolonged exposure to chemicals, and ultrasonic cleaning, as natural opal is hydrophane and microstructured, and should be treated with care to preserve its play of color. For the discerning collector or custom jeweler, this Australian semi black opal represents a combination of natural origin, strong color performance, and excellent cutting that supports long term value and desirability.
