I want to be precise about this because "they charge more" is vague. Here is the exact comparison.
I found a GIA 1ct F-VS1 round, Excellent, no fluorescence on Blue Nile: $5,890.
I then searched the same GIA report number on Brilliant Earth.
Brilliant Earth listed the identical stone — same GIA number, same physical diamond — at $6,990.
Difference: $1,100 for the same stone with the same GIA certificate.
I called Brilliant Earth to ask directly. Their response:
"Brilliant Earth offers Beyond Conflict Free™ sourcing, recycled precious metals, and a commitment to ethical supply chains. Our pricing reflects the additional due diligence we perform on every stone."
I asked: "Is the GIA stone itself sourced differently through you vs Blue Nile?"
Long pause. Then: "The stone meets our ethical sourcing standards."
The GIA certificate is issued to the stone, not the retailer. The same stone in the same GIA report does not have a different provenance depending on which website lists it. The $1,100 is for Brilliant Earth's brand, packaging, and marketing — not for a different or more ethical diamond.
If ethical sourcing genuinely matters to you: look at Canadian diamonds (Canadamark certified), or lab-grown diamonds which have zero mining provenance concerns. Both are legitimate and priced fairly.
Do not pay a $1,100 premium for the same GIA stone.
The GIA report number is the diamond's fingerprint. The stone does not change depending on which retailer lists it. Brilliant Earth's "Beyond Conflict Free" sourcing claim is applied at the point of acquisition — if they acquire a stone that was already in the market, the provenance history is the same as any other retailer handling that stone. The $1,100 is for the Brilliant Earth brand. That is a legitimate business model but buyers should understand what they are and are not paying for.