Natural untreated 1.55 carat Colorado aquamarine displayed on coral, highlighting its elongated octagonal step cut and light medium blue color.
Close-up of an untreated Colorado aquamarine held in tweezers, showcasing its custom octagonal step cut, transparent crystal, and light medium blue hue.
Untreated Colorado aquamarine shown on fingertips for scale, featuring a custom octagonal step cut with elegant elongated proportions.
A close-up rotation of this natural Colorado aquamarine highlighting its elongated octagonal step cut, refined geometry, and clean, transparent crystal.
View this untreated 1.55 carat Colorado aquamarine in natural light as its custom octagonal step cut reveals crisp reflections, exceptional transparency, and a soft light medium blue color
Natural untreated 1.55 carat Colorado aquamarine displayed on coral, highlighting its elongated octagonal step cut and light medium blue color.
Close-up of an untreated Colorado aquamarine held in tweezers, showcasing its custom octagonal step cut, transparent crystal, and light medium blue hue.
Untreated Colorado aquamarine shown on fingertips for scale, featuring a custom octagonal step cut with elegant elongated proportions.
A close-up rotation of this natural Colorado aquamarine highlighting its elongated octagonal step cut, refined geometry, and clean, transparent crystal.
View this untreated 1.55 carat Colorado aquamarine in natural light as its custom octagonal step cut reveals crisp reflections, exceptional transparency, and a soft light medium blue color

1.55CT Aquamarine: Caribbean Blue Octagonal Step Cut

$442.00
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  • Community - Transparency - Environmental Responsibility
  • Ethically Sourced with Traceable Origin
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Specifications

Gemstone: Aquamarine
Color: Light Medium Blue
Weight: 1.55 Carats
Shape & Cut: Octagonal Step Cut
Dimensions: 10.27 × 5.56 × 3.63 mm
Origin: Mt Antero, Colorado, USA
Treatment: None

In Natural Light

This Colorado aquamarine carries a delicate light medium blue that feels as though it has been gathered from high alpine snowmelt. Transparent and quietly luminous, its color shifts between cool sky blue and the faintest whisper of glacial green as natural light moves across its polished facets.

The elongated octagonal silhouette lends the gemstone an understated elegance. Long step facets draw the eye through the crystal with calm, uninterrupted reflections, emphasizing its clarity rather than overwhelming it with brilliance. Small natural inclusions remain visible under close inspection, serving as subtle reminders of the crystal's journey deep within Colorado's granite pegmatites.

Its beauty is one of restraint—a gemstone defined by balance, proportion, and the quiet confidence that only untreated aquamarine can possess.

The Lapidary's Eye

The custom octagonal step cut embraces the crystal's naturally elongated form with remarkable precision. Crisp parallel facets create clean bands of light that travel effortlessly through the stone, while clipped corners soften the geometry without sacrificing its architectural character.

Rather than chasing maximum sparkle, the lapidary focused on preserving transparency, graceful proportions, and the crystal's inherent personality. The result is a refined cut that celebrates the quiet elegance for which fine aquamarine is admired.

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