Book Appointment
An Old Mine Cut matched pair is two Old Mine diamonds selected and cut to mirror each other — matched in size, outline, crown height, and culet character — for use in stud earrings or as symmetrical side stones. Guru Diam holds 22 Old Mine Cut pairs on hand, CVD lab-grown, IGI-gradable on request.
What makes an Old Mine pair different from two Old Mine stones
Buying two Old Mine Cut diamonds and buying an Old Mine Cut pair are not the same order. Because the cut is hand-shaped rather than machine-bruted — see our Old Mine Cut vs Old European Cut guide for the full breakdown of what defines the cut — no two stones come out identical by default. A pair means the two stones have been matched deliberately: same squarish-cushion outline, same crown height, comparable culet size, and consistent color and tone. Put two unmatched Old Mine stones side by side in a stud setting and the asymmetry is obvious the moment they catch light differently.
Why matching matters more on this cut than most
Round brilliants tolerate minor mismatches because the outline and faceting are standardized — a 0.1mm difference barely reads. Old Mine Cut has the opposite problem: its whole appeal is the irregular, hand-cut character, which means the natural variation between any two stones is wider to start with. Matching an Old Mine pair means narrowing that variation back down — pulling from enough on-hand stock to find two stones whose irregularities happen to line up, not just their carat weight.
What Old Mine pairs are used for
The two standard uses are stud earrings and symmetrical side stones flanking a center stone in a three-stone ring. Both applications put the two stones in direct visual comparison, worn or set close together, which is why matching quality — not just individual stone quality — is what buyers are actually paying for.
| Attribute | What's matched |
|---|---|
| Outline | Squarish-cushion shape and corner rounding |
| Crown height | Matched within the pair |
| Culet | Comparable size/openness |
| Color & tone | Matched for consistent warmth under light |
| Carat weight | Matched or graduated, per order spec |
Sourcing a matched pair
Guru Diam pulls Old Mine pairs from current on-hand stock and matches them to spec rather than approximating from single loose stones — CVD lab-grown, IGI-gradable on request, GIA available on request. Open a wholesale account for live pricing and to request a matched pair for a specific project.
Frequently Asked Questions
What is an Old Mine Cut matched pair? Two Old Mine Cut diamonds selected and matched for outline, crown height, culet character, and color/tone — used for stud earrings or symmetrical side stones, where the two stones sit in direct visual comparison.
Why is matching harder for Old Mine Cut than for round brilliants? Old Mine Cut is hand-shaped, not machine-bruted, so individual stones vary more to begin with. A true pair means finding two stones whose irregularities align, which requires deeper on-hand stock than matching a standardized cut.
What is an Old Mine Cut, exactly? See our full Old Mine Cut vs Old European Cut guide for the detailed definition — in short, a squarish-cushion antique cut with a high crown, large open culet, and chunky hand-cut facets.
Are Old Mine Cut pairs certified? They're sold as matched-pair goods, IGI-gradable on request, following the same convention as our other matched-pair inventory. Center stones sold alongside a pair are certified separately.
