Secure shipping · Tracking included · IGI certified diamonds
Harlow Mercantile
The Vault

Small Vault.
High Standards.

Every stone in the Vault is chosen one at a time. We don't try to offer hundreds of stones. We offer the ones we'd be proud to own ourselves. Every stone is individually photographed, clearly priced, and every diamond includes its full IGI grading report.

6 stones currently in the Vault

A lab-grown diamond resting on ivory linen
IGI Certified Diamonds
Ethically Lab-Grown
Secure Shipping
Signature Packaging
6
Stones in the Vault
100%
Transparent Pricing
100%
Individually Photographed
The Vault

Currently in the Vault.

Every stone is one of a kind. When a piece is sold, it leaves the Vault. New stones are added only after meeting Harlow's standards.

1.88 ct Emerald Cut Lab-Grown Diamond
IGI Certified
Emerald · 1.88 ct

Emerald cut · IGI certified

  • IGI Certified
  • Color D
  • Clarity VVS2
  • 1.88 ct
1.05 ct Marquise Lab-Grown Diamond
IGI Certified
Marquise · 1.05 ct

Marquise cut · IGI certified

  • IGI Certified
  • Color E
  • Clarity VS1
  • 1.05 ct
The Harlow Standard

How we do things.

Hand Selected

Every stone is chosen one at a time for the Vault.

IGI Certified Diamonds

Every diamond arrives with its full IGI grading report.

Ethically Lab-Grown

Chemically identical to mined stones, with a clearer origin.

Secure Shipping

Every order ships securely with tracking. Adult signature may be required on qualifying orders.

Signature Packaging

Each stone arrives ready to gift, hold, or set.

Honest Pricing

Fair prices on every stone. No pressure, no games.

Coming to Harlow

Future collections.

Custom fine jewelry is on the way. These pieces are future plans, not available today.

Engagement RingsComing Soon
EarringsComing Soon
PendantsComing Soon
NecklacesComing Soon
Secure Shipping
Secure Checkout
Tracking Included
Ethically Lab-Grown
The Vault List

First look at new stones.

Get a note when a new stone is added to the Vault. No spam, ever.