Jewelry Express Works
1.29ct Natural C3 Champagne Old Mine Cut Diamond
1.29ct Natural C3 Champagne Old Mine Cut Diamond
🔒 Vault Archive Item • Acquired for a Custom Build
Request Similar Gemstone & Ring Consultation »✓ Complimentary Sourcing Consultation & Project Estimate
While this specific gem has been acquired for a custom build, we can source similar natural options tailored to your preferred color, scale, and budget. Initial sourcing discussions and design estimates are complimentary with zero obligation. To reserve and ship curated partner gems to our Brookline shop under fully insured transit, a $500 deposit holds your stone, starts your custom 3D CAD design, and applies 100% toward your finished ring. Live partner inventory moves quickly across international trade vaults. Should a requested stone sell to another jeweler right before our hold goes through, we will gladly source comparable options for your review or issue a full refund if you prefer not to proceed. Once your stone is secured and CAD design begins, your deposit remains active as a dedicated credit toward your finished ring.
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Overview: A GIA-certified 1.29ct Canadian champagne diamond (C3 color, SI1 clarity) cut in a classic Old Mine profile, featuring soft golden warmth. (Vault Archive Reference)
🔒 Vault Archive Status: Selected for Custom Project
This specific gemstone was selected for a client's custom project and is now part of our design archive. We keep this listing up as a reference to show the quality of natural diamonds we work with. While finding an exact duplicate of a GIA-certified natural 1.29ct Canadian C3 champagne Old Mine cut diamond is challenging, we specialize in sourcing beautifully similar alternatives. If you have fallen in love with this soft golden warmth and antique profile, we are happy to search our supplier vaults to find a closely matching stone for your own private viewing.
Gemstone Specifications
- Carat Weight: 1.29ct (6.29 x 5.90 x 4.28 mm)
- Color / Clarity: C3 Champagne, SI1
- Cut / Shape: Modern Antique Old Mine Cut
- Origin: Canada (Ekati Mine)
- Certification: GIA Certified
Bench Notes on C3 Tone & Antique Proportions
On the champagne scale, C3 represents a light, soft golden warmth. How that color presents in the finished ring depends on your setting choices:
- Yellow or Rose Gold: Setting in yellow or rose gold unifies the stone's light warmth with the mounting, creating a subtle, low-contrast vintage look.
- White Gold or Platinum: White prongs create clean contrast, helping the soft golden tone pop against the bright white metal.
- Mounting Depth: Old Mine profiles feature a higher crown and deeper pavilion than modern brilliant cuts. We build the setting with open wirework so light enters freely while keeping the ring height balanced on the finger.
Looking to create something similar?
If you love this look, we invite you to reach out or visit our Brookline shop to get started. We will search our supplier vaults free of obligation to share what natural diamonds match your preferred size and budget. Once you select the stone you would like to view in person, we require a $500 Vault Sourcing & Design Deposit to bring it in. Bringing your gem safely to our Brookline studio usually takes 4 to 7 business days, giving you a private 7-day viewing window. This non-refundable deposit covers fully insured transit, custom 3D design renderings for your setting (including up to 2 revisions), and a physical 3D resin model to try on. Best of all, the full $500 applies 100% toward your finished ring.
What if the sourced gem isn't quite right?
Your deposit remains completely versatile. It transfers 100% as a project credit toward sourcing another natural gem, choosing an in-house lab-grown diamond, or crafting a custom setting.
Note: The $500 deposit applies specifically to sourcing natural gemstones and is credited 100% toward your finished project. Final custom ring totals are calculated simply as: Selected Gem Price + Custom Mounting Design (plus applicable MA sales tax). Since every setting is built from scratch, the final cost depends entirely on the specific design we create together, ranging from around $2,000 for compact mountings to $10,000+ for rare, high-carat stones. Exact quotes are provided during your in-person consultation (or shortly after, if we need time to calculate intricate bench labor or source specific side stones). Looking to maximize stone size within a specific budget? Custom engagement rings using our in-house lab-grown diamonds start at $2,000. Start your custom ring inquiry here.
