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Round|Natural|GIA

1.28ct J SI2 Round Natural Diamond

GD • J/SI2 • GIA 2231291639

Certificate GIA 2231291639

Diamond specifications and retailer prices

From £2,267 GBP
$3,037 USD
As of October 31, 2026
Save £849 GBP (27%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £3,116 GBP at Yorxs · As of November 1, 2026
View at Yorxs

About this 1.28ct natural round diamond

This 1.28ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade and certified by GIA 2231291639. Listed at 3 retailers as of October 31, 2026, with prices from £2,267 to £3,116, a £849 spread on the same certified stone. Yorxs lists it at £3,116. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.28
Carat
J
Colour
SI2
Clarity
Good
Cut

Specifications

CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2231291639
Dimensions7.19 × 7.28 × 4.11 mm
L/W Ratio1.01
Top View
7.19 mm7.28 mm1.28 ctJ / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 2231291639
Side View
Table 62.0%CrownGirdle: THN-MEDPavilionCulet: NoneDepth 56.8%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 31
Current: £2,267 GBP|Low: £2,267 GBP|High: £3,130 GBP|Avg: £2,687 GBP|-6.5%
Retailer 1
Yorxs
November 1, 2026
Retailer 1£2,267 GBP
Yorxs£3,116 GBP

16 data points across 2 retailers

3 retailers£2,267 GBP to £3,116 GBP

B
Cheapest Retailer
-
£2,267 GBP
$3,037 USD
B
Retailer 2
-
£2,363 GBP
A$4,870 AUD
View
Most Expensive
C
Yorxs
JOLA2147 · Nov 1
£3,116 GBP
€3,976 EUR
View
2 more retailers have this diamond
Prices start from £2,267 GBPSave up to £849 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B
1.28ct Round
£2,267 GBP