Van Amstel Diamond

Collector-grade natural diamonds

D IF, D FL, Type IIa and Type IIb diamonds for serious acquisition.

Van Amstel Diamond focuses on geologically finite stones at the top of the natural diamond market: independently certified Type IIa and Type IIb diamonds chosen for purity, rarity, and long-term collectibility.

View Available Type II Diamonds Request The Type II Rarity Dossier
Natural rarity
Less than 2% of natural diamonds qualify as Type II
Certification
Selected for GIA-supported acquisition conversations
Positioning
Scarcity-driven, finite, privately sourced assets

GIA-certified candidates

Natural, never lab-grown

Type II disclosed

Private acquisition possible

Why Type II diamonds are different

Most diamonds sold globally are Type Ia. Type II stones are geological anomalies.

  • Type II diamonds contain no measurable nitrogen impurities.
  • They formed under exceptional geological conditions.
  • They represent roughly 1 to 2 percent of all natural diamonds.
  • They occupy the rarest end of the natural diamond spectrum.

The best Type II stones are not selected as ordinary jewelry inventory. They are collected because they combine beauty, geology, and scarcity in a way the market cannot reproduce at scale.

Type profiles

Type IIb and Type IIa serve different collectors, but both sit at the top of the natural rarity curve.

Type IIb

The absolute rarity

  • Often associated with the rarest blue diamonds.
  • Can include top white stones with extraordinary scarcity.
  • Known for boron presence and electrical conductivity.
  • Typically pursued as geological assets first.
Who buys Type IIb

Collectors and long-hold buyers seeking the rarest natural category.

Type IIa

The purest material

  • Includes many D IF and D FL stones.
  • Recognized for exceptional optical transparency.
  • Favored for elite engagement and investment-led acquisition.
  • Represents some of the cleanest crystal material in nature.
Who buys Type IIa

Buyers who want the highest purity with immediate visual impact and rarity.

Selected inventory

Illustrative D IF, D FL, Type IIa and Type IIb acquisition opportunities.

GIA candidate

Type IIa D IF

Shape
Emerald
Positioning
Collector-grade white stone
Use case
Engagement or private holding
Request Full Documentation

GIA candidate

Type IIa D FL

Shape
Cushion
Positioning
Highest purity expression
Use case
Statement acquisition
Request Full Documentation

Private source

Type IIb D IF

Shape
Radiant
Positioning
Rare white IIb profile
Use case
Scarcity-led collector buy
Request Full Documentation

Private source

Type IIb Fancy Blue

Shape
Oval
Positioning
Extreme rarity
Use case
Museum-grade rarity profile
Request Full Documentation

Private acquisition

Acquire Type II stones discreetly, with documentation-first conversations.

Van Amstel Diamond works through private sourcing and documentation-led introductions. The process is tailored for buyers looking for elite D IF, D FL, Type IIa, and Type IIb diamonds rather than ordinary retail stock.

Collector briefing Type II Rarity Dossier
Email acquisitions@vanamsteldiamond.com
Focus D IF, D FL, IIa, IIb, and special rarity sourcing
Request A Private Introduction