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Round|Natural|GIA

1.51ct J SI1 Round Natural Diamond

VG • J/SI1 • GIA 2434559881

Certificate GIA 2434559881

Diamond specifications and retailer prices

From £2,646 GBP
HK$27,700 HKD
As of November 1, 2026
Save £2,974 GBP (53%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £5,620 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

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 SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 2434559881. Listed at 16 retailers as of October 30, 2026, with prices from £2,646 to £5,620, a £2,974 spread on the same certified stone. NZ Jewellers lists it at £5,620. 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

1.51
Carat
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2434559881
Dimensions7.19 × 7.16 × 4.58 mm
L/W Ratio1.00
Top View
7.19 mm7.16 mm1.51 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2434559881
Side View
Table 58.0%CrownGirdle: ThickPavilionCulet: NoneDepth 63.8%

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 1
Current: £5,620 GBP|Low: £2,627 GBP|High: £5,620 GBP|Avg: £3,517 GBP
NZ Jewellers
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
Retailer 16
Retailer 17
November 1, 2026
Retailer 14£2,646 GBP
Retailer 7£2,839 GBP
Retailer 4£2,977 GBP
Retailer 5£3,060 GBP
Retailer 15£3,226 GBP
Retailer 16£3,226 GBP
Retailer 17£3,226 GBP
Retailer 8£3,261 GBP
Retailer 12£3,280 GBP
Retailer 9£3,329 GBP
Retailer 6£3,337 GBP
Retailer 11£3,635 GBP
Retailer 3£3,722 GBP
Retailer 2£3,853 GBP
Retailer 13£3,965 GBP
Retailer 10£5,138 GBP
NZ Jewellers£5,620 GBP

31 data points across 17 retailers

16 retailers£2,646 GBP to £5,620 GBP

A
Cheapest Retailer
-
£2,646 GBP
HK$27,700 HKD
B+
Retailer 2
-
£2,839 GBP
$3,804 USD
View
B+
Retailer 3
-
£2,977 GBP
$3,989 USD
View
Final sale: no returns
B+
Retailer 4
-
£3,060 GBP
$4,100 USD
View
B+
Retailer 5
-
£3,226 GBP
$4,322 USD
View
B+
Retailer 6
-
£3,226 GBP
$4,322 USD
View
B+
Retailer 7
-
£3,226 GBP
$4,322 USD
View
B+
Retailer 8
-
£3,280 GBP
View
B+
Retailer 9
-
£3,329 GBP
$4,460 USD
View
B+
Retailer 10
-
£3,337 GBP
$4,471 USD
View
B+
Retailer 11
-
£3,635 GBP
€4,639 EUR
View
B
Retailer 12
-
£3,722 GBP
$4,987 USD
View
B
Retailer 13
-
£3,853 GBP
View
B
Retailer 14
-
£3,965 GBP
ZAR 85,832 ZAR
View
B
Retailer 15
-
£5,138 GBP
View
Most Expensive
B
NZ Jewellers
0fc4e9aa-7d9d-4d58-800a-c3cdbba0feb4 · Oct 30
£5,620 GBP
$7,530 USD
View
15 more retailers have this diamond
Prices start from £2,646 GBPSave up to £2,974 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
£2,646 GBP