Wholesale, Lab-Grown
Wholesale Old Mine Cut Diamonds
Natural and lab-grown are two separate lines here, never mixed on one certificate or one price list.
Before electric light, diamonds were cut for candles. The old mine cut is what that looked like: a soft cushion outline, a small table, a tall crown, chunky facets, and an open culet you can see straight down through the middle of the stone. It rolls light in slow broad flashes instead of the fast glitter of a modern brilliant.
Estate buyers have chased these for years and the supply has always been the problem. Antique stones come one at a time, in whatever color, clarity, and weight the nineteenth century happened to leave behind, and they are priced as heirlooms rather than as inventory. A jeweler who needs a 3.50 old mine in a specific color to finish a commission cannot go find one on demand.
Lab-grown cutting changed that. Factories now cut old mine proportions deliberately, which means the antique look is available in consistent sizes and grades for the first time. We hold over 600 of them, one of the deeper old mine shelves anywhere, and nearly 400 of those stones are three carats and up. This page covers the lab-grown line only.
Buying Old Mine Cut Diamonds Wholesale
The culet is the identifier. A real old mine look needs an open culet that shows as a small circle when you look down through the table. If the listing photo shows a clean point instead, you are looking at a cushion with a story attached. Ask for the face-up image before you buy anything sold as an antique cut.
Read the table percentage and the crown. Old cutting kept the table small and the crown tall, and that combination is what produces the big lazy flashes people are buying. A stone with a modern table in the high fifties will sparkle like a modern cushion no matter what the outline suggests. Small table and high crown is the spec to hold out for.
Lower colors work in your favor here. Chunky faceting flashes warmth rather than washing it out, so an I, J, or K old mine cut looks deliberate rather than compromised, and clients who want an antique feel often prefer it. The same logic applies to clarity, since large facets and strong contrast break up small inclusions well.
Every stone on this shelf is lab-grown and graded almost entirely by IGI. Sizes above three carats dominate, so if you need something in the one to two carat range, check the live list rather than assuming. Old mine pairs are worth asking about for earrings, since all matched pairs we hold are lab-grown.
Frequently Asked Questions
Are old mine cut diamonds available lab-grown?
Yes, and that is what we stock. Cutters produce old mine proportions in lab-grown material deliberately, so you can order the antique look in a specific size, color, and clarity instead of waiting for an estate stone to surface. We hold over 600 of them right now.
What is the difference between an old mine cut and an old European cut?
Outline. An old mine cut has a cushion shape with rounded corners, an old European cut is round. Both share the antique features: small table, high crown, open culet, and chunky facets cut for candlelight rather than for electric light.
Why buy a lab-grown old mine cut instead of an antique one?
Availability and price. Antique old mine cuts come to market one at a time in whatever specification history left behind, and they carry estate pricing. Lab-grown versions let you fill a specific order in a specific size, and they cost a fraction per carat. If a client specifically wants a stone with provenance, an antique is the right answer instead.
What size old mine cuts do you carry?
Nearly 400 of the over 600 stones in stock are three carats and up. This is a large-stone shelf, which suits the cut, since the open culet and broad facets read best with some size behind them. Smaller stones do come through, so check the live inventory for the current range.
How do I buy these at wholesale?
Open a free trade account and prices appear once you sign in. We supply jewelers, designers, and dealers, not the public. For antique-style commissions where you need several stones to look like they came from the same era, call us and we will match a group by hand.
Related Shapes
Related reading: Old mine cut in the lab-grown era.