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Oval|Natural|GIA

1.51ct E SI1 Oval Natural Diamond

EX • E/SI1 • GIA 2516454924

Certificate GIA 2516454924

Diamond specifications and retailer prices

From £5,477 GBP
$7,293 USD
As of October 28, 2026
Save £6,181 GBP (53%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £11,657 GBP at NZ Jewellers · As of October 27, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2516454924. Listed at 16 retailers as of October 27, 2026, with prices from £5,477 to £11,657, a £6,181 spread on the same certified stone. NZ Jewellers lists it at £11,657. 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.98°
Pavilion angle39.08°
OriginNatural
Grading LabGIA
CertificateGIA 2516454924
Dimensions8.72 × 6.35 × 4.16 mm
L/W Ratio1.37
Key to symbols
Feather, Crystal, Cloud, Needle
Top View
8.72 mm6.35 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2516454924
Side View
Table 63.0%Crown 36.98°Girdle: THK-VTKPavilion 39.08°Culet: NDepth 65.5%

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 28
Current: £6,483 GBP|Low: £5,361 GBP|High: £9,831 GBP|Avg: £6,685 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
October 29, 2026
Retailer 10£5,477 GBP
Retailer 11£5,827 GBP
Retailer 9£5,848 GBP
Retailer 2£5,951 GBP
Retailer 4£6,211 GBP
Retailer 12£6,315 GBP
Retailer 1£6,483 GBP
Retailer 7£6,569 GBP
Retailer 3£6,707 GBP
Retailer 6£7,605 GBP
Retailer 8£8,411 GBP
Retailer 5£9,766 GBP

42 data points across 12 retailers

16 retailers£5,477 GBP to £11,657 GBP

A
Cheapest Retailer
-
£5,477 GBP
$7,293 USD
B+
Retailer 2
-
£5,827 GBP
$7,760 USD
View
B+
Retailer 3
-
£5,848 GBP
$7,788 USD
View
Final sale: no returns
B+
Retailer 4
-
£5,849 GBP
$7,789 USD
View
B+
Retailer 5
-
£5,951 GBP
$7,925 USD
View
B+
Retailer 6
-
£6,211 GBP
$8,271 USD
View
B+
Retailer 7
-
£6,315 GBP
$8,409 USD
View
B+
Retailer 8
-
£6,411 GBP
$8,538 USD
View
B+
Retailer 9
-
£6,483 GBP
View
B+
Retailer 10
-
£6,569 GBP
A$13,459 AUD
View
B+
Retailer 11
-
£6,707 GBP
$8,931 USD
View
B
Retailer 12
-
£7,286 GBP
$9,703 USD
View
B
Retailer 13
-
£7,605 GBP
€9,645 EUR
View
B
Retailer 14
-
£8,411 GBP
ZAR 180,960 ZAR
View
Price last confirmed 7 days ago
B
Retailer 15
-
£9,766 GBP
View
Most Expensive
B
NZ Jewellers
bc228933-8170-4d5c-84b9-6692ffa876f1 · Oct 27
£11,657 GBP
$15,524 USD
View
15 more retailers have this diamond
Prices start from £5,477 GBPSave up to £6,181 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
£5,477 GBP