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Oval|Natural|GIA

1.51ct D SI1 Oval Natural Diamond

ID • D/SI1 • GIA 7548154942

Certificate GIA 7548154942

Diamond specifications and retailer prices

From £4,891 GBP
$6,554 USD
As of October 30, 2026
Save £4,426 GBP (48%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £9,318 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 D 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 7548154942. Listed at 9 retailers as of October 30, 2026, with prices from £4,891 to £9,318, a £4,426 spread on the same certified stone. NZ Jewellers lists it at £9,318. 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
D
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle40.36°
Pavilion angle39.7°
OriginNatural
Grading LabGIA
CertificateGIA 7548154942
Dimensions8.58 × 6.28 × 4.13 mm
L/W Ratio1.37
Girdle conditionVery Thick
Key to symbols
Feather, Crystal, Cloud, Needle
Top View
8.58 mm6.28 mm1.51 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7548154942
Side View
Table 57.0%Crown 40.36°Girdle: ThickPavilion 39.7°Culet: NoneDepth 65.8%

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: £9,318 GBP|Low: £4,891 GBP|High: £9,979 GBP|Avg: £6,409 GBP|-6.6%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 7£4,891 GBP
Retailer 8£5,146 GBP
Retailer 2£5,228 GBP
Retailer 6£5,571 GBP
Retailer 10£5,572 GBP
Retailer 9£5,613 GBP
Retailer 4£5,657 GBP
Retailer 3£6,123 GBP
Retailer 11£6,551 GBP
Retailer 5£7,806 GBP
NZ Jewellers£9,318 GBP

37 data points across 11 retailers

9 retailers£4,891 GBP to £9,318 GBP

A
Cheapest Retailer
-
£4,891 GBP
$6,554 USD
A
Retailer 2
-
£5,146 GBP
$6,895 USD
View
A
Retailer 3
-
£5,228 GBP
View
A
Retailer 4
-
£5,571 GBP
$7,465 USD
View
Retailer 5
-
£5,572 GBP
A$11,486 AUD
View
Price last confirmed 9 days ago
A
Retailer 6
-
£5,613 GBP
$7,521 USD
View
A
Retailer 7
-
£5,657 GBP
$7,580 USD
View
B+
Retailer 8
-
£7,806 GBP
View
Most Expensive
B
NZ Jewellers
e8059cf4-d62c-4dda-8c3f-5f1beaed782e · Oct 30
£9,318 GBP
$12,485 USD
View
8 more retailers have this diamond
Prices start from £4,891 GBPSave up to £4,426 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
£4,891 GBP