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Oval|Natural|GIA

1.51ct I SI2 Oval Natural Diamond

VG • I/SI2 • GIA 6512348292

Certificate GIA 6512348292

Diamond specifications and retailer prices

From £3,578 GBP
As of November 6, 2026
Save £3,428 GBP (49%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £7,975 GBP at NZ Jewellers · As of September 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 6512348292. Listed at 17 retailers as of November 4, 2026, with a 96% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
I
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.58°
Pavilion angle37.41°
OriginNatural
Grading LabGIA
CertificateGIA 6512348292
Dimensions9.92 × 6.21 × 3.60 mm
L/W Ratio1.60
Top View
9.92 mm6.21 mm1.51 ctI / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6512348292
Side View
Table 61.0%Crown 36.58°Girdle: STK-VTKPavilion 37.41°Culet: NoneDepth 58.0%

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: Nov 6
Current: £7,975 GBP|Low: £3,578 GBP|High: £7,975 GBP|Avg: £5,252 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 2£3,578 GBP
Retailer 11£4,150 GBP
Retailer 8£4,401 GBP
Retailer 4£4,528 GBP
Retailer 9£4,768 GBP
Retailer 10£4,768 GBP
Retailer 6£5,207 GBP
Retailer 3£5,310 GBP
Retailer 7£6,909 GBP
Retailer 5£7,006 GBP
NZ Jewellers£7,975 GBP

32 data points across 11 retailers

17 retailers£3,578 GBP to £7,006 GBP

A
Cheapest Retailer
-
£3,578 GBP
B+
Retailer 2
-
£4,034 GBP
View
B+
Retailer 3
-
£4,150 GBP
View
B+
Retailer 4
-
£4,158 GBP
View
B+
Retailer 5
-
£4,197 GBP
View
B+
Retailer 6
-
£4,401 GBP
View
Final sale: no returns
B+
Retailer 7
-
£4,528 GBP
View
Retailer 8
-
£4,768 GBP
View
Price last confirmed 45 days ago
Retailer 9
-
£4,768 GBP
View
Price last confirmed 36 days ago
B
Retailer 10
-
£4,885 GBP
View
B
Retailer 11
-
£5,207 GBP
View
B
Retailer 12
-
£5,310 GBP
View
Retailer 13
-
£5,502 GBP
View
Price last confirmed 38 days ago
Retailer 14
-
£5,502 GBP
View
Price last confirmed 45 days ago
Retailer 15
-
£6,909 GBP
View
Price last confirmed 11 days ago
B
Retailer 16
-
£7,006 GBP
View
Most Expensive
NZ Jewellers
326c35a8-6481-4302-8358-59b11b293d82 · Sep 30
£7,975 GBP
$10,674 USD
View
Price last confirmed 37 days ago
16 more retailers have this diamond
Prices start from £3,578 GBPSave up to £3,428 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
£3,578 GBP