Oval|Natural|GIA

1.51ct J SI1 Oval Natural Diamond

GD • J/SI1 • GIA 2536653789

Certificate GIA 2536653789

Diamond specifications and retailer prices

From £2,646 GBP
HK$27,700 HKD
As of November 1, 2026
Save £3,011 GBP (53%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £6,511 GBP at NZ Jewellers · As of September 29, 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 2536653789. Listed at 19 retailers as of November 1, 2026, with a 114% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle41.9°
OriginNatural
Grading LabGIA
CertificateGIA 2536653789
Dimensions8.78 × 6.35 × 4.15 mm
L/W Ratio1.38
Top View
8.78 mm6.35 mm1.51 ctJ / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2536653789
Side View
Table 63.0%CrownGirdle: STK-VTKPavilion 41.9°Culet: NoneDepth 65.4%

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: £3,207 GBP|Low: £2,637 GBP|High: £6,008 GBP|Avg: £3,618 GBP|-0.5%
Retailer 1
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
Retailer 18
November 2, 2026
Retailer 15£2,646 GBP
Retailer 18£2,658 GBP
Retailer 8£2,773 GBP
Retailer 13£2,811 GBP
Retailer 5£2,958 GBP
Retailer 11£3,005 GBP
Retailer 7£3,071 GBP
Retailer 1£3,207 GBP
Retailer 14£3,217 GBP
Retailer 12£3,373 GBP
Retailer 4£3,425 GBP
Retailer 16£3,693 GBP
Retailer 10£3,767 GBP
Retailer 9£3,968 GBP
Retailer 3£4,023 GBP
Retailer 2£4,391 GBP
Retailer 6£5,474 GBP
Retailer 17£5,657 GBP

26 data points across 18 retailers

19 retailers£2,646 GBP to £5,657 GBP

A
Cheapest Retailer
-
£2,646 GBP
HK$27,700 HKD
A
Retailer 2
-
£2,658 GBP
$3,561 USD
View
Retailer 3
-
£2,773 GBP
$3,715 USD
View
Price last confirmed 14 days ago
B+
Retailer 4
-
£2,811 GBP
$3,767 USD
View
B+
Retailer 5
-
£2,958 GBP
$3,963 USD
View
B+
Retailer 6
-
£3,005 GBP
$4,026 USD
View
Final sale: no returns
B+
Retailer 7
-
£3,071 GBP
$4,115 USD
View
B+
Retailer 8
-
£3,207 GBP
$4,297 USD
View
B+
Retailer 9
-
£3,217 GBP
$4,310 USD
View
B+
Retailer 10
-
£3,373 GBP
View
B+
Retailer 11
-
£3,425 GBP
$4,589 USD
View
B
Retailer 12
-
£3,693 GBP
$4,948 USD
View
Retailer 13
-
£3,767 GBP
A$7,766 AUD
View
Price last confirmed 23 days ago
B
Retailer 14
-
£3,968 GBP
SGD 7,185 SGD
View
B
Retailer 15
-
£4,023 GBP
€5,134 EUR
View
B
Retailer 16
-
£4,391 GBP
ZAR 95,042 ZAR
View
B
Retailer 17
-
£5,474 GBP
$7,335 USD
View
B
Retailer 18
-
£5,657 GBP
View
Most Expensive
NZ Jewellers
f6b78bb8-c63d-4413-955f-f244919ba279 · Sep 29
£6,511 GBP
$8,724 USD
View
Price last confirmed 33 days ago
18 more retailers have this diamond
Prices start from £2,646 GBPSave up to £3,011 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 Oval
£2,646 GBP