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Oval|Natural|GIA

1.51ct J SI1 Oval Natural Diamond

ID • J/SI1 • GIA 6535853653

Certificate GIA 6535853653

Diamond specifications and retailer prices

From £2,690 GBP
$3,604 USD
As of October 31, 2026
Save £2,902 GBP (52%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £5,592 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6535853653. Listed at 21 retailers as of October 30, 2026, with prices from £2,690 to £5,592, a £2,902 spread on the same certified stone. NZ Jewellers lists it at £5,592. 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
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.58°
OriginNatural
Grading LabGIA
CertificateGIA 6535853653
Dimensions9.12 × 6.46 × 4.07 mm
L/W Ratio1.41
Top View
9.12 mm6.46 mm1.51 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6535853653
Side View
Table 60.0%Crown 35.58°Girdle: SLI-THKPavilionCulet: NoneDepth 63.0%

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: Oct 31
Current: £5,592 GBP|Low: £2,596 GBP|High: £5,592 GBP|Avg: £3,519 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
Retailer 18
Retailer 19
Retailer 20
November 1, 2026
Retailer 10£2,690 GBP
Retailer 6£2,824 GBP
Retailer 20£2,926 GBP
Retailer 7£2,963 GBP
Retailer 8£3,045 GBP
Retailer 11£3,075 GBP
Retailer 2£3,089 GBP
Retailer 17£3,210 GBP
Retailer 18£3,210 GBP
Retailer 19£3,210 GBP
Retailer 14£3,284 GBP
Retailer 5£3,321 GBP
Retailer 9£3,329 GBP
Retailer 3£3,395 GBP
Retailer 12£3,483 GBP
Retailer 16£3,633 GBP
Retailer 4£3,704 GBP
Retailer 15£3,946 GBP
Retailer 13£5,113 GBP
NZ Jewellers£5,592 GBP

24 data points across 20 retailers

21 retailers£2,690 GBP to £5,592 GBP

A
Cheapest Retailer
-
£2,690 GBP
$3,604 USD
A
Retailer 2
-
£2,824 GBP
$3,784 USD
View
A
Retailer 3
-
£2,926 GBP
$3,921 USD
View
A
Retailer 4
-
£2,963 GBP
$3,970 USD
View
Final sale: no returns
A
Retailer 5
-
£3,045 GBP
$4,080 USD
View
Retailer 6
-
£3,075 GBP
$4,120 USD
View
Price last confirmed 14 days ago
A
Retailer 7
-
£3,089 GBP
View
B+
Retailer 8
-
£3,210 GBP
$4,301 USD
View
B+
Retailer 9
-
£3,210 GBP
$4,301 USD
View
B+
Retailer 10
-
£3,210 GBP
$4,301 USD
View
B+
Retailer 11
-
£3,284 GBP
View
B+
Retailer 12
-
£3,321 GBP
$4,449 USD
View
B+
Retailer 13
-
£3,329 GBP
$4,460 USD
View
B+
Retailer 14
-
£3,395 GBP
$4,549 USD
View
Retailer 15
-
£3,483 GBP
A$7,180 AUD
View
Price last confirmed 23 days ago
B+
Retailer 16
-
£3,633 GBP
€4,636 EUR
View
B+
Retailer 17
-
£3,704 GBP
$4,963 USD
View
B+
Retailer 18
-
£3,946 GBP
ZAR 85,406 ZAR
View
B
Retailer 19
-
£5,113 GBP
View
Retailer 20
-
£5,307 GBP
$7,111 USD
View
Price last confirmed 9 days ago
Most Expensive
B
NZ Jewellers
9d590c74-603f-4327-ba15-8433d252e1d6 · Oct 30
£5,592 GBP
$7,493 USD
View
20 more retailers have this diamond
Prices start from £2,690 GBPSave up to £2,902 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
£2,690 GBP