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Oval|Natural|GIA

1.51ct H SI2 Oval Natural Diamond

ID • H/SI2 • GIA 6551643504

Certificate GIA 6551643504

Diamond specifications and retailer prices

From £2,614 GBP
$3,502 USD
As of October 31, 2026
Save £3,594 GBP (58%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £6,208 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 H 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 6551643504. Listed at 17 retailers as of October 30, 2026, with prices from £2,614 to £6,208, a £3,594 spread on the same certified stone. NZ Jewellers lists it at £6,208. 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
H
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551643504
Dimensions8.86 × 6.30 × 3.97 mm
L/W Ratio1.41
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Needle
Top View
8.86 mm6.30 mm1.51 ctH / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551643504
Side View
Table 61.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.1%

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: £6,208 GBP|Low: £2,614 GBP|High: £6,362 GBP|Avg: £3,708 GBP|-2.4%
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
November 2, 2026
Retailer 15£2,614 GBP
Retailer 8£2,784 GBP
Retailer 5£2,908 GBP
Retailer 2£2,980 GBP
Retailer 16£3,212 GBP
Retailer 6£3,212 GBP
Retailer 3£3,228 GBP
Retailer 4£3,228 GBP
Retailer 17£3,228 GBP
Retailer 7£3,425 GBP
Retailer 11£3,452 GBP
Retailer 10£3,543 GBP
Retailer 13£3,685 GBP
Retailer 14£3,725 GBP
Retailer 9£4,418 GBP
Retailer 12£5,676 GBP
NZ Jewellers£6,208 GBP

25 data points across 17 retailers

17 retailers£2,614 GBP to £6,208 GBP

A
Cheapest Retailer
-
£2,614 GBP
$3,502 USD
A
Retailer 2
-
£2,784 GBP
$3,730 USD
View
A
Retailer 3
-
£2,908 GBP
$3,897 USD
View
A
Retailer 4
-
£2,980 GBP
$3,993 USD
View
Final sale: no returns
A
Retailer 5
-
£3,212 GBP
$4,303 USD
View
A
Retailer 6
-
£3,212 GBP
$4,304 USD
View
A
Retailer 7
-
£3,228 GBP
$4,325 USD
View
A
Retailer 8
-
£3,228 GBP
$4,325 USD
View
A
Retailer 9
-
£3,228 GBP
$4,325 USD
View
A
Retailer 10
-
£3,425 GBP
$4,589 USD
View
A
Retailer 11
-
£3,452 GBP
View
A
Retailer 12
-
£3,543 GBP
View
A
Retailer 13
-
£3,685 GBP
€4,703 EUR
View
A
Retailer 14
-
£3,725 GBP
$4,991 USD
View
B+
Retailer 15
-
£4,418 GBP
$5,920 USD
View
B+
Retailer 16
-
£5,676 GBP
View
Most Expensive
B
NZ Jewellers
8c622049-9a61-49f9-ac51-2a589433ecd6 · Oct 30
£6,208 GBP
$8,318 USD
View
16 more retailers have this diamond
Prices start from £2,614 GBPSave up to £3,594 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
£2,614 GBP