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Round|Natural|GIA

1.51ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 2557794801

Certificate GIA 2557794801

Diamond specifications and retailer prices

From £2,661 GBP
As of November 4, 2026
Save £4,471 GBP (63%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £7,133 GBP at Jared · As of November 4, 2026
View at Jared

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2557794801. Listed at 18 retailers as of November 4, 2026, with prices from £2,661 to £7,133, a £4,471 spread on the same certified stone. Jared lists it at £7,133. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle34°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2557794801
Dimensions7.40 × 7.35 × 4.58 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Feather, Cloud, Cavity
Top View
7.40 mm7.35 mm1.51 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2557794801
Side View
Table 56.0%Crown 34°Girdle: MediumPavilion 40.8°Culet: NoneDepth 61.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £7,133 GBP|Low: £2,661 GBP|High: £7,133 GBP|Avg: £3,800 GBP
Jared
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 5, 2026
Retailer 13£2,661 GBP
Retailer 11£2,678 GBP
Retailer 12£2,808 GBP
Retailer 2£3,207 GBP
Retailer 3£3,323 GBP
Retailer 4£3,323 GBP
Retailer 5£3,323 GBP
Retailer 15£3,434 GBP
Retailer 14£3,785 GBP
Retailer 7£3,835 GBP
Retailer 9£4,112 GBP
Retailer 8£5,311 GBP
Retailer 6£5,790 GBP
Retailer 10£6,902 GBP
Jared£7,133 GBP

23 data points across 15 retailers

18 retailers£2,661 GBP to £7,133 GBP

Retailer 1
-
£2,204 GBP
Price last confirmed 82 days ago
A
Retailer 2
-
£2,661 GBP
View
A
Retailer 3
-
£2,678 GBP
View
A
Retailer 4
-
£2,808 GBP
View
Final sale: no returns
B+
Retailer 5
-
£3,207 GBP
View
Retailer 6
-
£3,323 GBP
View
Price last confirmed 8 days ago
Retailer 7
-
£3,323 GBP
View
Price last confirmed 8 days ago
Retailer 8
-
£3,323 GBP
View
Price last confirmed 8 days ago
Retailer 9
-
£3,434 GBP
View
Price last confirmed 7 days ago
Retailer 10
-
£3,492 GBP
View
Price last confirmed 38 days ago
B+
Retailer 11
-
£3,785 GBP
View
B+
Retailer 12
-
£3,835 GBP
View
B+
Retailer 13
-
£4,112 GBP
View
Retailer 14
-
£4,276 GBP
View
Price last confirmed 70 days ago
B
Retailer 15
-
£5,311 GBP
View
Retailer 16
-
£5,790 GBP
View
Price last confirmed 7 days ago
C
Retailer 17
-
£6,902 GBP
View
Most Expensive
B
Jared
160318552 · Nov 4
£7,133 GBP
$9,600 USD
View
17 more retailers have this diamond
Prices start from £2,661 GBPSave up to £4,471 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.

A
1.51ct Round
£2,661 GBP