Best Old Cut Diamond Sizes for Engagement Rings

At Choo Yilin, we believe the choice of diamond size is deeply personal, and there’s no singular “right” answer. Each decision should reflect the couple’s journey and love story.

However, from our conversations with industry experts and observations of trends, we can share some popular preferences that may help guide those embarking on their own research and decision-making journey.

While modern diamond shoppers often lean towards sizes in the 1.0–2.0 carat range, choosing an antique stone involves a touch more nuance due to the distinctive cutting style of Old Mine Cuts. Here’s a breakdown of size ranges and what each may represent.

The Choo Yilin Old Cut Diamond Ring No. IX

2.0 Carats and Above: Statement and Heirloom Pieces

Old Mine Cuts in the 2.0–3.0 carat range are rare and highly coveted, perfect for those seeking a bold, vintage-inspired statement.
Larger stones prominently display the cut’s distinctive chunky facets and visible culet.
These sizes are often found in heirloom jewellery or sold by high-end vintage dealers, making them treasures for those seeking something truly one-of-a-kind.

1.0–1.5 Carats: The Sweet Spot

One of the most sought-after sizes for Old Mine Cut engagement rings today.
Historically, many engagement rings from the Georgian, Victorian, and Edwardian eras featured Old Mine Cuts in this range.
While the deeper pavilion and high crown of Old Mine Cuts may make them appear smaller than modern brilliant cuts, their chunkier sparkle can create a significant visual impact.

0.50–0.99 Carats: Timeless Vintage Charm

Favoured by those who appreciate dainty, understated rings or are drawn to historical authenticity.
Many Old Mine Cuts from the Georgian and Victorian periods were hand-cut in this size range.
Smaller stones often showcase more exaggerated asymmetry and unique quirks, enhancing their charm and individuality.

Under 0.50 Carats: Accent or Cluster Rings

Smaller Old Mine Cuts are often used in halo settings, cluster rings, or as accent stones.
Historically, smaller Old Mine Cuts were common during the Georgian and early Victorian eras, when cutting technology and available rough diamonds naturally led to these sizes.

Considerations for Choosing the Right Size


Attribute	Considerations
Depth and Face-Up Size	Old Mine Cuts are known for their deeper cut, which may make them appear smaller than modern diamonds of the same carat weight. If size appearance is important, look for stones with a larger face-up diameter.
Setting	Bezel settings, halos, or raised prong settings can help maximise the perceived size of an Old Mine Cut, while also offering a protective and elegant frame for the stone.
One-Of-A-Kind Character	Since no two Old Mine Cuts are exactly alike, even smaller stones can feel more distinctive than a modern diamond of comparable size. This uniqueness adds a layer of storytelling and meaning to the piece.
Budget Considerations	Larger Old Mine Cuts tend to command higher prices due to their rarity. However, slightly smaller stones or those with lower clarity can offer more budget-friendly options without sacrificing charm or historical appeal.

Create Your bespoke Choo Yilin Old Cut Diamond piece

Now, for the first time, we are thrilled to bring the same dedication and craftsmanship to Old Cut Diamonds, offering you the opportunity to customise your own Choo Yilin diamond heirloom.

As with our jade pieces, each Old Cut diamond piece will be a celebration of life’s milestones—whether it’s a once-in-a-lifetime engagement ring, a cherished anniversary piece, or a family heirloom to pass down through generations.

There are only twelve slots available. If you’d like to explore creating a bespoke piece, you may sign up here.