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Oval|Natural|GIA

1.51ct J SI1 Oval Natural Diamond

VG • J/SI1 • GIA 5516611805

Certificate GIA 5516611805

Diamond specifications and retailer prices

From £3,391 GBP
$4,544 USD
As of October 31, 2026
Save £4,302 GBP (56%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £7,693 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural oval diamond

This 1.51ct natural oval 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 stated by the retailer rather than the lab and certified by GIA 5516611805. Listed at 22 retailers as of October 30, 2026, with prices from £3,391 to £7,693, a £4,302 spread on the same certified stone. NZ Jewellers lists it at £7,693. 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 (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.05°
Pavilion angle37.88°
OriginNatural
Grading LabGIA
CertificateGIA 5516611805
Dimensions9.72 × 6.45 × 3.75 mm
L/W Ratio1.51
Top View
9.72 mm6.45 mm1.51 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5516611805
Side View
Table 58.0%Crown 34.05°Girdle: ThickPavilion 37.88°Culet: NoneDepth 58.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £7,693 GBP|Low: £3,526 GBP|High: £7,693 GBP|Avg: £4,877 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
November 1, 2026
Retailer 16£3,661 GBP
Retailer 15£3,735 GBP
Retailer 3£3,846 GBP
Retailer 5£4,167 GBP
Retailer 8£4,167 GBP
Retailer 11£4,167 GBP
Retailer 10£4,413 GBP
Retailer 2£4,426 GBP
Retailer 6£4,508 GBP
Retailer 4£4,571 GBP
Retailer 14£4,808 GBP
Retailer 7£4,897 GBP
Retailer 13£5,026 GBP
Retailer 12£5,651 GBP
Retailer 9£6,776 GBP
NZ Jewellers£7,693 GBP

37 data points across 16 retailers

22 retailers£3,391 GBP to £7,693 GBP

B+
Cheapest Retailer
-
£3,391 GBP
$4,544 USD
B+
Retailer 2
-
£3,635 GBP
$4,870 USD
View
B+
Retailer 3
-
£3,661 GBP
$4,905 USD
View
B+
Retailer 4
-
£3,735 GBP
$5,005 USD
View
B
Retailer 5
-
£3,846 GBP
$5,153 USD
View
Final sale: no returns
B
Retailer 6
-
£3,900 GBP
$5,225 USD
View
B
Retailer 7
-
£4,167 GBP
$5,583 USD
View
Retailer 8
-
£4,167 GBP
$5,583 USD
View
Price last confirmed 16 days ago
Retailer 9
-
£4,167 GBP
$5,583 USD
View
Price last confirmed 16 days ago
B+
Retailer 10
-
£4,413 GBP
View
B
Retailer 11
-
£4,426 GBP
View
B
Retailer 12
-
£4,508 GBP
$6,040 USD
View
Retailer 13
-
£4,571 GBP
A$9,422 AUD
View
Price last confirmed 28 days ago
B
Retailer 14
-
£4,808 GBP
$6,442 USD
View
B
Retailer 15
-
£4,814 GBP
$6,450 USD
View
B
Retailer 16
-
£4,814 GBP
$6,450 USD
View
B
Retailer 17
-
£4,897 GBP
$6,562 USD
View
B
Retailer 18
-
£4,978 GBP
$6,670 USD
View
B
Retailer 19
-
£5,026 GBP
€6,414 EUR
View
B
Retailer 20
-
£5,651 GBP
ZAR 122,326 ZAR
View
B
Retailer 21
-
£6,776 GBP
View
Most Expensive
C
NZ Jewellers
71a33d73-c09d-4c13-92b7-697e3f4d6ae0 · Oct 30
£7,693 GBP
$10,308 USD
View
21 more retailers have this diamond
Prices start from £3,391 GBPSave up to £4,302 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+
1.51ct Oval
£3,391 GBP