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6.50 Ct Natural Black Ethiopian Opal - Large Oval Cabochon (16X12X7 MM) with Electric Neon Harlequin Fire

6.50 Ct Natural Black Ethiopian Opal - Large Oval Cabochon (16X12X7 MM) with Electric Neon Harlequin Fire

Regular price $195.20
Regular price $195.20 $244.00 Sale price
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Product Specifications

Weight(ct) 06.50 Cts.
Stone Name Black Ethiopian Opal
Stone Color Deep Midnight Black / Smoky Dark
Stone size 16X12X7 MM
Shape & Cut Perfectly Symmetrical Oval Cabochon
Fire Play Prismatic Neon Green & Fireball Red Flash
Transparency Translucent to Opaque
Hardness 5.5 - 6.5 (Mohs Scale)
Treatment Traditional Smoked (For Deep Midnight Base)
Origin Welo Region, Ethiopia
Authenticity Authenticity Certificate Included 

Product Overview

The "Midnight Nebula": Unveiling a 6.50 Carat Cosmic Wonder

Gazing at this Premium 6.50-carat cut Black Ethiopian Opal evokes a truly cosmic sensation—much like observing a universe in which events are ceaselessly unfolding, without end. The gemstone's dark base creates a bold, statement-making aesthetic, making it an ideal choice for those who love to wear or carry something bold and mysterious.

The reason for comparing this gem to a "Midnight Nebula" lies in its internal play of color; set against the dark base, these vibrant hues stand out so vividly that the stone appears to be imbued with life itself.

The "Dancing Aurora" Phenomenon: Fire That Never Sleeps

The greatest strength of this specific Ethiopian Welo Opal lies in its "Play of Color," which is never static. Against its deep midnight base, flashes of Neon Green and Electric Red shimmer as if the Northern Lights (Aurora Borealis) were drifting across the night sky.

3D Visual Depth: Since it has a thick base, the stone's "fire" does not merely appear on the surface; instead, it emanates from the depths of its core, creating a mesmerizing holographic effect.

Dynamic Glow: The moment you move your hand, these colors shift and transform within the stone like an "Electric Storm"—a visual experience that will leave you spellbound every time you gaze upon it.

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Express delivery 4-5 days
🚚 Deliver within 06/03/2026 to 06/13/2026
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Product Frequently Asked Questions

This black opal has undergone traditional smoking treatment — a natural, smoke-based process used to enhance the deep midnight black base tone. No chemicals, dyes, or coatings are used. The fire play and internal color are 100% natural.

Play of color is the phenomenon unique to opal — where flashes of spectral color (red, green, blue, orange) appear to move and shift inside the stone as light hits it from different angles. On this 6.5 ct black opal, the play of color is strong — featuring prismatic neon green and electric fireball red flashes against a deep midnight black
base. The dark base makes every color flash appear 3x more vivid than on a white or crystal opal.

This 16×12×7 mm oval cabochon is perfectly sized for:
Statement rings (size 7-9 US ring base recommended)
Pendant necklaces — bezel or prong setting
Brooch centerpiece
Custom collector display piece
The flat back makes it ready for both bezel setting and wire wrapping without any modification needed.

No — they are different. Australian black opal forms in sedimentary rock and is generally more expensive. Ethiopian black opal (like this one) forms in volcanic
ash and gets its dark base through traditional smoking — a natural process. Both are genuine natural opals with real fire play. Ethiopian black opal offers exceptional
value and comparable visual impact at a significantly lower price point than Australian black opal.

Ethiopian opal has a hardness of 5.5–6.5 on the Mohs
scale — softer than sapphire or diamond. Handle with care:
Remove before swimming, showering, or washing hands
Store separately in a soft pouch — away from harder stones
Clean with a soft dry cloth only — no ultrasonic cleaners
Avoid direct sunlight for extended periods
Keep away from perfumes, chemicals, and oils
With proper care, your Ethiopian opal will last a lifetime.