BlackDiamond
VI

The refractive collection

Celestial Carbon
For the Exceptional.

A curated archive of certified black diamonds — sourced from geological extremes, documented to collector standards, and polished to a sharp architectural finish.

118+

Active stones

3 ct

Min. carat

GIA · IGI

Certifications

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Hardness

10 Mohs — the hardest natural material

Origin

Brazil · Central Africa · Russia

Color mechanism

Graphite & hematite inclusions

Luster type

Sub-adamantine to metallic

Certification

GIA · IGI · Internal grading

8 / 8 stones

Close-up of a polished black diamond with radiant cut, reflecting sharp architectural facets against dark velvet
88/100
RadiantCollector

Architectural solitaire

The Obsidian Radiant

From $18,400

A sharply composed collector stone for clients who want the visual gravity of black carbon with the discipline of a modern gallery object. The radiant geometry keeps the stone visually alive without compromising the severe black silhouette.

Carat
8.42 ct
Cut
Radiant
Metal
18K white
Rarity
88

The stone does not try to sparkle like a white diamond. Its value is in controlled surface reflection: sharp, metallic, and nearly architectural. Under directional light the facets read as a geometric map of the stone's internal density.

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Emerald cut black diamond ring displayed against dark marble surface, step-cut facets visible
84/100
Emerald CutStep Cut

Stepped collector geometry

Midnight Emerald

From $12,900

A restrained emerald-cut composition built around proportion, edge discipline, and a quieter form of prestige. The stepped facets allow specialists to judge cutting precision at a glance.

Carat
5.15 ct
Cut
Emerald
Metal
Platinum 950
Rarity
84

Quiet mirror flashes appear along the long steps. The stone feels formal, measured, and deliberate. Unlike brilliant cuts, the emerald restrains light into slow, horizontal sweeps.

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Large cushion cut black diamond ring photographed against dark background with dramatic studio lighting
92/100
Cushion CutMuseum Grade

Museum-grade presence

Eclipse Cushion

From $24,200

A large cushion-cut black diamond with enough softness for fine jewelry, but enough mass to remain an asset-class object. At this carat weight, the stone demands institutional documentation.

Carat
10.20 ct
Cut
Cushion
Metal
18K yellow
Rarity
92

The cushion shape softens the black mass, producing broad pulses of reflected light rather than sharp flashes. In diffused light, the stone reads as a single, uniform void.

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Round brilliant cut black diamond ring on white gold band against dark textured background
74/100
Round BrilliantDaily Wear

Daily luxury stone

Nova Brilliant

From $7,800

A compact round black diamond created for clients who want the BlackDiamond language in a more wearable scale. The round brilliant is the collection's most approachable entry point without sacrificing the brand's severe tone.

Carat
3.40 ct
Cut
Round
Metal
18K white
Rarity
74

Fast surface flashes appear when the hand moves, giving the most familiar jewelry behavior in the collection. The round brilliant draws on the same geometry used for white diamonds, but absorbs rather than transmits light.

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Investment-grade Asscher cut black diamond displayed on black velvet with precise geometric facets visible
96/100
AsscherStep Cut

Investment-class geometry

Void Asscher

From $31,000

A stepped, architectural black diamond concept for collectors who value rarity, scale, and measurable specification. The Asscher geometry transforms the stone into a spatial object — a controlled void in the finest tradition of abstract art.

Carat
12.70 ct
Cut
Asscher-inspired
Metal
Platinum and
Rarity
96

Hypnotic corridor reflections. The stone organizes light into dark geometric chambers rather than sparkle points. It is among the most deliberately architectural light behaviors in the collection.

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Marquise cut black diamond ring with elongated blade-like silhouette against dark background
86/100
MarquiseBrilliant Cut

Elongated dark elegance

Shadow Marquise

From $9,200

A long, blade-like black diamond that creates a severe silhouette and a distinct editorial presence. The marquise returns drama to the collection without abandoning the original black-and-gold discipline.

Carat
4.80 ct
Cut
Marquise
Metal
18K rose
Rarity
86

Light travels along the long keel line, creating quick linear flashes when the piece moves. Rose gold softens the blackness just enough to make it seductive rather than harsh.

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Domed 18K yellow gold ring with a polished cabochon black diamond centerpiece
76/100
CabochonYellow Gold

Sculptural gold statement

Noir Dome

From $12,900

A warmer, sculptural interpretation of black diamond luxury, inspired by object-led jewelry design. The dome profile shifts the conversation from brilliance to mass, touch, and silhouette.

Carat
3.80 ct
Cut
Cabochon-polished
Metal
18K yellow
Rarity
76

Continuous luster with no aggressive flash. It behaves more like a polished black artifact than a conventional diamond. The dome amplifies ambient light into a single, sustained glow.

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Two matching diamond rings held with black leather gloves — ceremonial engagement set with black diamonds
90/100
Bridal SetCushion

Ceremonial bridal set

Eclipse Pair

From $24,200

A matched engagement and commitment set designed for contrast: matte black presence against precise white-metal light. The pair format adds an emotional entry point to a collection that could otherwise feel too institutional.

Carat
10.20 ct total
Cut
Cushion
Metal
Platinum with
Rarity
90

The center absorbs light while the surrounding stones create a controlled white-metal perimeter. The contrast between the black void and the platinum band produces the set's signature visual tension.

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Gemological point of view

Black diamonds are designed around pressure, not sparkle.

A serious black diamond collection needs protected settings, disciplined silhouettes, and documentation strong enough for private acquisition. Every piece is curated around opacity, surface luster, inclusion stability, carat presence, and architectural behavior.

Inclusion stability

Polycrystalline structure screened for structural continuity before every setting.

Surface luster

Sub-adamantine to metallic finish — selected for silhouette, not brilliance.

Origin documentation

Provenance records accompany every stone, supporting insurance and investment holdings.

VOID

Bespoke concierge

Cannot find your perfect stone?

Our curators work directly with diamond fields to source specific carat weights, rare cuts, and investment-grade parcels. Every private search is handled with full discretion.

Request private search

Private sourcing

Global network across Brazil, Africa, and Russia.

Bespoke cutting

Custom geometry specified by the collector.

Custody options

Secure vaulting and insurance valuation support.

Curated black diamond collection on dark velvet

100%

Ethically sourced · conflict-free carbon