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Oval|Natural|GIA

1.51ct I SI2 Oval Natural Diamond

ID • I/SI2 • GIA 1555553685

Certificate GIA 1555553685

Diamond specifications and retailer prices

From £3,249 GBP
$4,353 USD
As of October 30, 2026
Save £3,761 GBP (54%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £7,010 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 I 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 1555553685. Listed at 19 retailers as of October 30, 2026, with prices from £3,249 to £7,010, a £3,761 spread on the same certified stone. NZ Jewellers lists it at £7,010. 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
I
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle37.83°
OriginNatural
Grading LabGIA
CertificateGIA 1555553685
Dimensions9.39 × 6.15 × 3.91 mm
L/W Ratio1.53
Girdle conditionVery Thick
Key to symbols
Twinning Wisp, Crystal, Feather, Indented Natural, Needle, Natural
Top View
9.39 mm6.15 mm1.51 ctI / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1555553685
Side View
Table 63.0%Crown 37.83°Girdle: MED-VTKPavilionCulet: NoneDepth 63.6%

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 30
Current: £7,010 GBP|Low: £3,212 GBP|High: £7,010 GBP|Avg: £4,247 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
October 31, 2026
Retailer 17£3,239 GBP
Retailer 15£3,249 GBP
Retailer 5£3,311 GBP
Retailer 4£3,505 GBP
Retailer 6£3,534 GBP
Retailer 10£3,760 GBP
Retailer 16£3,797 GBP
Retailer 18£3,797 GBP
Retailer 19£3,797 GBP
Retailer 11£3,991 GBP
Retailer 13£4,088 GBP
Retailer 12£4,100 GBP
Retailer 8£4,254 GBP
Retailer 9£4,254 GBP
Retailer 3£4,381 GBP
Retailer 7£4,396 GBP
Retailer 2£4,743 GBP
Retailer 14£6,711 GBP
NZ Jewellers£7,010 GBP

36 data points across 19 retailers

19 retailers£3,249 GBP to £7,010 GBP

Retailer 1
-
£3,239 GBP
$4,340 USD
Price last confirmed 14 days ago
A
Retailer 2
-
£3,249 GBP
$4,353 USD
View
A
Retailer 3
-
£3,311 GBP
$4,436 USD
View
A
Retailer 4
-
£3,505 GBP
$4,696 USD
View
Final sale: no returns
A
Retailer 5
-
£3,534 GBP
$4,735 USD
View
A
Retailer 6
-
£3,760 GBP
$5,038 USD
View
A
Retailer 7
-
£3,797 GBP
$5,087 USD
View
A
Retailer 8
-
£3,797 GBP
$5,087 USD
View
A
Retailer 9
-
£3,797 GBP
$5,087 USD
View
B+
Retailer 10
-
£3,991 GBP
$5,347 USD
View
B+
Retailer 11
-
£4,088 GBP
View
B+
Retailer 12
-
£4,100 GBP
View
B+
Retailer 13
-
£4,254 GBP
$5,700 USD
View
B+
Retailer 14
-
£4,254 GBP
$5,700 USD
View
B+
Retailer 15
-
£4,381 GBP
$5,870 USD
View
B+
Retailer 16
-
£4,396 GBP
$5,890 USD
View
B+
Retailer 17
-
£4,743 GBP
€6,052 EUR
View
B
Retailer 18
-
£6,711 GBP
View
Most Expensive
B
NZ Jewellers
5043f498-1c39-423c-940e-e73d23376a8c · Oct 30
£7,010 GBP
$9,392 USD
View
18 more retailers have this diamond
Prices start from £3,249 GBPSave up to £3,761 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
£3,249 GBP