The Earth itself is around 4.65 billion years old, so not much older than black diamonds. Carbonados are extremely rare and have only ever been discovered in Brazil and the Central African Republic.

Carbonados are extremely rare and have only ever been discovered ... Although the precise origin of black diamonds is shrouded in mystery. Black diamonds are usually around 2.6 to 3.2 billion ...

With only a superficial area of 81,500 square miles of country, and a climate by no means tavorable for agricultural productions, what would Britain be without her valuable 9,000 miles of coal fields ...

The may contain diamonds involved in a scandal surrounding Marie-Antoinette, that would eventually trigger the French ...

The most valuable black opal features bright red stone against a very black base. In the '80s and '90s, gem-quality brown diamonds were worth about $1,500 per carat, but now many sell for up to $ ...

Black diamonds are only found in two places ... in the 1840s named them for their sooty appearance. That these rare diamonds come from such a localised area adds credence to the meteor theory.

Big deals are mounting at outdoor gear retailers like REI, Backcountry, and even Amazon as Black Friday looms closer, but one ...

Composed of approximately 300 carats of old mine-cut diamonds, the historic piece was once worn during royal coronations and ...

文章《A NY nonprofit is piloting community-based flood insurance. Could it be a model?/纽约一家非营利组织正在试行基于社区的洪水保险。它能成为一种模式吗？》发布在marketplace.org上。这是一家非营利新闻机构，制作与商业和经济相关的广播节目、播客、数字报道等内容。这篇文章介绍了一个由纽约市非营利组织纽约市邻里 ...

Others maintain that carbon atoms (or, in a minority opinion, grains of meteoritic black graphite) within the hurtling meteorite itself transformed instantly into diamond during the extraordinary ...

Instead of being red or green, the skin is jet black. Black Diamond apples (Malus Domestica) are a rare variety of Chinese ...

Centerpiece of its Sunrise exhibition at Graff’s Paris flagship by Place Vendôme was a new high jewelry necklace centrepieced by a 30 carat fancy intense yellow pear shaped diamond surrounded ...