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Oval|Natural|GIA

1.51ct G SI2 Oval Natural Diamond

EX • G/SI2 • GIA 5556995187

Certificate GIA 5556995187

Diamond specifications and retailer prices

From £2,704 GBP
HK$28,300 HKD
As of October 29, 2026
Save £3,649 GBP (57%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £6,352 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 G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5556995187. Listed at 21 retailers as of October 27, 2026, with prices from £2,704 to £6,352, a £3,649 spread on the same certified stone. NZ Jewellers lists it at £6,352. 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
G
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle37.8°
Pavilion angle38.6°
OriginNatural
Grading LabGIA
CertificateGIA 5556995187
Dimensions8.60 × 6.39 × 4.22 mm
L/W Ratio1.35
Girdle conditionPolished
Culet sizeNone
Top View
8.60 mm6.39 mm1.51 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5556995187
Side View
Table 59.0%Crown 37.8°Girdle: MED-VTKPavilion 38.6°Culet: NoneDepth 65.9%

Caratlytics Score

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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: Oct 29
Current: £6,352 GBP|Low: £2,704 GBP|High: £6,542 GBP|Avg: £3,726 GBP|-2.9%
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
Retailer 21
October 29, 2026
Retailer 5£2,704 GBP
Retailer 19£2,797 GBP
Retailer 14£2,836 GBP
Retailer 10£2,906 GBP
Retailer 11£3,049 GBP
Retailer 7£3,303 GBP
Retailer 20£3,303 GBP
Retailer 21£3,303 GBP
Retailer 2£3,401 GBP
Retailer 9£3,495 GBP
Retailer 16£3,553 GBP
Retailer 13£3,625 GBP
Retailer 3£3,717 GBP
Retailer 8£3,717 GBP
Retailer 12£3,811 GBP
Retailer 4£3,836 GBP
Retailer 18£3,888 GBP
Retailer 15£4,026 GBP
Retailer 6£4,241 GBP
Retailer 17£5,838 GBP
NZ Jewellers£6,352 GBP

25 data points across 21 retailers

21 retailers£2,704 GBP to £6,352 GBP

A
Cheapest Retailer
-
£2,704 GBP
HK$28,300 HKD
A
Retailer 2
-
£2,797 GBP
$3,748 USD
View
A
Retailer 3
-
£2,836 GBP
$3,800 USD
View
A
Retailer 4
-
£2,906 GBP
$3,894 USD
View
A
Retailer 5
-
£3,049 GBP
$4,085 USD
View
Final sale: no returns
A
Retailer 6
-
£3,303 GBP
$4,426 USD
View
A
Retailer 7
-
£3,303 GBP
$4,426 USD
View
A
Retailer 8
-
£3,303 GBP
$4,426 USD
View
A
Retailer 9
-
£3,401 GBP
$4,557 USD
View
A
Retailer 10
-
£3,495 GBP
$4,683 USD
View
A
Retailer 11
-
£3,553 GBP
View
A
Retailer 12
-
£3,625 GBP
View
A
Retailer 13
-
£3,717 GBP
$4,980 USD
View
A
Retailer 14
-
£3,717 GBP
$4,980 USD
View
A
Retailer 15
-
£3,811 GBP
$5,106 USD
View
A
Retailer 16
-
£3,836 GBP
$5,140 USD
View
A
Retailer 17
-
£3,888 GBP
€4,962 EUR
View
A
Retailer 18
-
£4,026 GBP
$5,394 USD
View
A
Retailer 19
-
£4,241 GBP
$5,682 USD
View
B+
Retailer 20
-
£5,838 GBP
View
Most Expensive
B
NZ Jewellers
72cea195-2876-4593-b6f0-6e66d96eb4c4 · Oct 27
£6,352 GBP
$8,511 USD
View
20 more retailers have this diamond
Prices start from £2,704 GBPSave up to £3,649 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
£2,704 GBP