An extremely rare, impressive, and well-cut rectangular emerald-cut natural, earth-mined, Type IIb diamond weighing over five carats. TypeIIb diamonds contain are primarily composed of carbon, but also contain traces of the element boron, which give blue diamonds their unique hue. Based on current research by GIA, TypeIIb diamonds form deep within the earth’s crust and are among the world's rarest diamond-type categories.

• Carat Weight: 5+

• Color: D

• Clarity: FL

• Cut: N/A (Nonetheless, Excellent Proportions and Ratios)

• Fluorescence: None

• Certificate: GIA

• Ratio: 1.53:1

• Origin: Russia

Notable Examples of TypeIIb Diamonds:

1. Hope Diamond; 45.52 carats

2. Idol’s Eye; 70.21 carats

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