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Carat Hunter · Where to buy diamonds

1.25ct · F · SI2 · Cushion · Lab-grown

Every retailer carrying this exact spec, from our latest listings.

Updated November 6, 2026 · Independent. Zero affiliate revenue.

Market at this spec

Active listings

15

Retailers carrying

14

Price range

CA$491 to
CA$1,556

Median confirmed price

CA$656

Certificate mix:GCAL 13 · IGI 1

Range and median take each diamond at this spec at its cheapest recently confirmed price. They are cohort statistics, not per-retailer pricing claims.

Every retailer that stocks this spec

Ranked by active inventory count. Selection is mechanical, not editorial.

  4. 4Adiamor1 in stock
    United States·Founded 1999·GCAL·Ships to Canada
    Terms not yet verified
    Visit Adiamor
  6. 6B2C Jewels1 in stock
    United States·Founded 2004·IGI·30-day returns·Ships to Canada
    Terms read on the retailer’s own site, October 19, 2026
    Visit B2C Jewels
  9. 9GemsNY1 in stock
    United States·Founded 1988·GCAL·Ships to Canada
    Terms not yet verified
    Visit GemsNY
Show 4 more retailers

Stock counts reflect current listings. Founded and shipping details come from public sources. Return terms are our summary of each retailer's own policy page, dated per retailer above. Retailers change their terms, so check the retailer's own returns and shipping pages before you buy.

Explore all 15 stones in this cohort

How pricing is spread at this spec

For the 5 diamonds at this spec with a recently confirmed price, each taken at its cheapest confirmed price, the distribution looks like this:

  • Lowest confirmed
    CA$491
  • 10th percentile
    CA$535
  • Median
    CA$656
  • 75th percentile
    CA$1,081
  • 90th percentile
    CA$1,366
  • Highest confirmed
    CA$1,556

Cohort distribution only. No retailer named adjacent to a dollar figure in this section.

How to pick

Lowest price floor for the spec?

The cheapest confirmed prices start around CA$535. Use the explorer to sort by price.

Sort by price

Want None or Faint fluorescence?

15 of 15 are graded None or Faint at this spec.

Shopping from Canada?

10 of the 13 retailers with shipping details ship to Canada. 3 do not. 1 retailer has not published any shipping details.

What this spec means

  • Cushion: a softened-corner square or rectangle with a vintage feel.
  • F color: colorless, with a slight tint detectable only by experts under controlled light.
  • SI2 clarity: Slightly Included 2. Inclusions easy to see at 10x. May be visible to the unaided eye in some stones.
  • Lab-grown: chemically identical to natural diamonds, typically at least 90% less than a comparable natural cohort from 1 carat up.

Compare the top retailers carrying this spec

Side-by-side facts for the two stores carrying the most 1.25ct F SI2 cushion lab grown diamonds.

Compare Diamond Exchange Canada vs 77 Diamonds

Related specs

Slightly smaller carat

cushion-1ct-f-si2-lab

Slightly larger carat

cushion-1-5ct-f-si2-lab

One colour grade higher

cushion-1-25ct-e-si2-lab

One colour grade lower

cushion-1-25ct-g-si2-lab

One clarity grade higher

cushion-1-25ct-f-si1-lab

Same spec, natural

cushion-1-25ct-f-si2-natural

Frequently asked

Does Carat Hunter earn commission from these retailers?

No. We earn zero affiliate revenue from any retailer in our index.

How fresh is this data?

Listings refresh as we re-read each retailer, most of them every day. Static facts about each retailer refresh weekly.

Why is one retailer cheaper for the same certificate?

Markup and overhead vary by retailer. The same physical diamond can list at very different prices across stores. See our cross-retailer analysis for the structural reasons.

How is the retailer ranking calculated?

Strictly by active inventory count for this exact spec. The retailer carrying the most stones at the spec ranks first. There is no editorial input, weighting or affiliate consideration.

Why do you not show per-retailer prices on this page?

Prices vary per stone, not per store. Click through to any matched diamond and you will see every retailer's price on the exact same physical stone, which is the meaningful comparison.

Where to Buy 1.25ct F SI2 Cushion Lab Grown Diamonds | Carat Hunter