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Oval|Natural|GIA

1.51ct L SI1 Oval Natural Diamond

EX • L/SI1 • GIA 2566045185

Certificate GIA 2566045185

Diamond specifications and retailer prices

From £1,396 GBP
As of November 6, 2026
Save £2,527 GBP (64%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £4,030 GBP at NZ Jewellers · As of August 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 L colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2566045185. Listed at 19 retailers as of November 5, 2026, with a 181% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
L
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2566045185
Dimensions8.88 × 6.36 × 4.00 mm
L/W Ratio1.40
Top View
8.88 mm6.36 mm1.51 ctL / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2566045185
Side View
Table 61.0%CrownGirdle: SLI-VTKPavilionCulet: NoneDepth 62.9%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: £3,923 GBP|Low: £1,396 GBP|High: £4,265 GBP|Avg: £2,138 GBP|-8.0%
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 6, 2026
Retailer 16£1,396 GBP
Retailer 3£1,621 GBP
Retailer 14£1,695 GBP
Retailer 8£1,816 GBP
Retailer 2£1,845 GBP
Retailer 13£1,860 GBP
Retailer 12£1,877 GBP
Retailer 7£1,931 GBP
Retailer 5£1,948 GBP
Retailer 15£1,963 GBP
Retailer 9£1,981 GBP
Retailer 10£1,986 GBP
Retailer 4£2,165 GBP
Retailer 11£2,291 GBP
Retailer 6£2,411 GBP
NZ Jewellers£3,923 GBP

25 data points across 16 retailers

19 retailers£1,396 GBP to £3,923 GBP

A
Cheapest Retailer
-
£1,396 GBP
A
Retailer 2
-
£1,621 GBP
View
A
Retailer 3
-
£1,695 GBP
View
A
Retailer 4
-
£1,816 GBP
View
A
Retailer 5
-
£1,845 GBP
View
B+
Retailer 6
-
£1,860 GBP
View
B+
Retailer 7
-
£1,877 GBP
View
Retailer 8
-
£1,931 GBP
View
Price last confirmed 8 days ago
B+
Retailer 9
-
£1,948 GBP
View
B+
Retailer 10
-
£1,963 GBP
View
B+
Retailer 11
-
£1,981 GBP
View
B+
Retailer 12
-
£1,986 GBP
View
Retailer 13
-
£2,040 GBP
View
Price last confirmed 23 days ago
B+
Retailer 14
-
£2,165 GBP
View
B+
Retailer 15
-
£2,291 GBP
View
Retailer 16
-
£2,354 GBP
View
Price last confirmed 23 days ago
B+
Retailer 17
-
£2,411 GBP
View
B
Retailer 18
-
£3,923 GBP
View
Most Expensive
NZ Jewellers
7afac1a4-437f-4dfb-b9d8-3add4c558d30 · Aug 30
£4,030 GBP
$5,394 USD
View
Price last confirmed 68 days ago
18 more retailers have this diamond
Prices start from £1,396 GBPSave up to £2,527 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
£1,396 GBP