Cost to Reset an Heirloom Diamond in Canada, Explained

Resetting an heirloom diamond in Canada costs mostly what the new setting costs, because the stone itself is already paid for. Next to the mounting, the setting labour is a small line. If you want an independent grading report, GIA's published fees work out to roughly $97 to $202 CAD for stones between half a carat and two carats. Recutting is the one step that can push the bill well past what most people expect, and for most heirloom stones I would talk you out of it.

Below is what each part of the job involves, which parts are optional, and where people tend to overspend.

What you are actually paying for

Most quotes for a reset are built from the same handful of pieces. Some are unavoidable. Others are worth paying for only in particular situations.

• The new setting. This is the biggest variable. Metal (14k gold, 18k gold or platinum), how much metal the design uses, and whether it carries side stones or pavé decide most of the total.
• Removing and setting the stone. A bench jeweller takes the diamond out of the old mount, checks it, and sets it in the new one. Old stones often don't match modern standard sizes, so the head may need adjusting to fit.
• An inspection or grading report. This is optional, but useful if the stone has never been graded or the old paperwork is missing.
• Recutting. This is optional and rarely needed. It costs money and removes weight from a stone you can never get back.
• Finishing touches. Ring size, engraving and metal finish. These are usually small amounts, but they add up.

The diamond is the one big cost you don't pay. That's the real saving in a reset, and it's why the setting deserves most of your attention and budget.

Have the stone looked at before you choose anything

Before you fall for a new design, have the diamond checked while it is still in the old ring and again once it's out. Old mounts have often had decades of wear. GIA's consumer guidance on protecting an engagement ring suggests having prongs checked "every six months" and gives a simple test: "if it moves, it's loose." A stone that has been sitting loose can have picked up chips around the girdle. Those chips can decide which prong positions will cover them in the new ring.

Is a grading report worth it?

For a small stone you will never sell, often not. A jeweller can tell you roughly what you have, and the ring's value to your family has nothing to do with a paper grade. A report starts to make sense when the stone is around half a carat or larger, when you want it insured at a properly documented value, or when nobody really knows what it is.

One practical point from GIA's own Natural D-to-Z Diamond Services fee schedule, effective July 1, 2026: "Grading and laser inscription services are performed on loose diamonds only." The stone has to come out of the old mount anyway, so the reset is the natural time to get it graded.

GIA charges in US dollars. The table below uses the Diamond Grading Report fees from that July 2026 schedule, converted at the Bank of Canada daily exchange rate of 1.4254 CAD per USD published for October 5, 2026. Both numbers will move, so check them again before you submit a stone. Shipping, insurance in transit and any handling by the jeweller who submits it are extra.

The same schedule lists a separate "Damage Assessment" letter, described as determining "if your diamond has been damaged since its last polishing," at $250 USD. That's about $356 CAD at the same rate. For most heirlooms a jeweller's look under a loupe answers the same question, so I would only pay for the letter if a chip affects an insurance claim or a sale.

Old cuts do not get a cut grade

Many heirloom stones are old European or old mine cuts. GIA's guide to diamond shapes describes the old European cut as having a "round shape, high crown, small table and visible open culet—all cut by hand." It describes the old mine cut as having a "squarish shape with softly rounded corners, a high crown, small table and a large, open culet." Don't expect an "Excellent" or "Good" on the report for either. In GIA's article on understanding cut grades, the lab says it "provides an overall cut grade for standard round brilliant cut diamonds in the D-to-Z color range" and that a cut grade "for non-standard round brilliant diamonds or fancy shaped diamonds... is not available."

That isn't a mark against the stone. It means the stone was cut to a different idea of beauty, and comparing it to a modern round on paper misses the point.

Colour is also worth a caution. A grade estimated while the stone was mounted, especially in yellow gold, can differ from the grade it gets once it's loose. Colour grading involves judgement, and so does how warm an old stone looks to you in a new metal. Both are good reasons to look at it out of the old mount before you choose the metal.

Choosing a setting that suits an old stone

For an heirloom, the stone's measurements matter more than its carat weight. Two stones of the same weight can have very different diameters and depths. Older cuts with high crowns and deep pavilions often sit taller and can look smaller face-up than a modern round of the same weight, as GIA's shape guide notes. Ask for the millimetre measurements (diameter or length and width, plus depth) before you shortlist designs. Every head and basket is built around a size range.

Some practical trade-offs:

• Prong count. Six prongs spread the grip and give a chipped or slightly irregular girdle more protection than four. GIA's care article notes the extra two prongs "might also provide a little extra protection for the girdle." Four prongs show more of the stone. Pick based on how the girdle looks once it's out.
• Bezel or half-bezel. A bezel suits a stone with visible girdle chips because the metal rim covers them. It also hides more of the side profile.
• Metal colour. GIA's shape guide suggests that yellow and rose gold "perfectly complement" warmer old-cut stones. If your diamond has a faint yellow tint, white metal can make it more obvious. Yellow gold will make it look intentional. Platinum is not automatically the better choice here. For a warm old stone, 14k or 18k yellow gold often looks better and costs less.

You can browse engagement ring settings by style to see which head shapes and profiles you like. Bring the stone's measurements to the conversation, and ask the jeweller up front whether they set customer-supplied stones and what they need to check first.

Recutting: usually not worth it

Recutting gets suggested a lot and is rarely the right answer. Repolishing an old European cut into modern proportions removes weight, and the stone becomes something different. You lose the cut that made it recognisably your grandmother's stone, and you pay for it.

It can make sense in narrow cases: a deep chip that no prong or bezel can hide, or a badly worn stone that you value as a diamond rather than as an heirloom. Ask the cutter for the expected finished weight in writing before you agree to anything. If the answer is a big drop, think about whether you would rather keep the original as it is.

What to do with the old mount

Families often want to reuse the old gold. Check what it actually is first. Under the Competition Bureau's Guide to the Precious Metals Marking Act and Regulations, "It is not mandatory to mark or advertise a precious metal article for quality." An old ring with no stamp may still be gold, but you can't tell its karat from the outside. When a quality mark is applied, the guide says it must be accurate within set tolerances, such as 3 parts per 1,000 by weight for gold articles without solder. Platinum marks are reserved for articles with "at least 95 percent platinum."

Reusing old metal in a new design is not always cheaper. An old band holds only a few grams, and refining or alloying it to match new work takes labour. Many people keep the original mount whole as a keepsake or have it made into a separate piece.

The process, step by step

1. Have the ring inspected while the stone is still mounted. Note any loose prongs, chips or gaps.
2. Have the stone removed, cleaned and measured. Record the diameter, depth and any girdle damage.
3. Decide whether you need a grading report. If you do, submit the stone now while it's loose.
4. Shortlist settings that match the stone's measurements and colour, not just its weight.
5. Choose the metal, ring size and any engraving. You can set these when you finish the ring.
6. Approve the final design, have the stone set, and get the prongs checked again after the first few months of wear.

What to do next

Start with the stone, not the setting. Get it out of the old mount, get it measured, and decide whether you want a report. Once you know the millimetre size and how it looks loose, picking a setting is quick. If the heirloom turns out to be too damaged to reuse, or you want it as a side stone or a separate piece, you can compare it with options in our loose diamond search. There are more practical guides on settings and metals in the Reflections Craft blog.

Sources

• Gemological Institute of America (GIA). Natural D-to-Z Diamond Services, US Dollar fee schedule, effective July 1, 2026. GIA fee schedule PDF
• Gemological Institute of America (GIA). GIA Diamond Grading Reports: Understanding Diamond Cut Grades, 2015. GIA 4Cs
• Gemological Institute of America (GIA). Guide to Diamond Shapes for Engagement Rings, 2025. GIA 4Cs
• Gemological Institute of America (GIA). How to Protect Your Diamond Engagement Ring, 2017. GIA 4Cs
• Competition Bureau Canada. Guide to the Precious Metals Marking Act and Regulations, 2006, updated 2025. Competition Bureau Canada
• Bank of Canada. Daily exchange rates, USD/CAD rate for October 5, 2026. Bank of Canada