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Oval|Natural|GIA

1.51ct K SI2 Oval Natural Diamond

VG • K/SI2 • GIA 6545992502

Certificate GIA 6545992502

Diamond specifications and retailer prices

From £1,281 GBP
As of November 6, 2026
Save £2,325 GBP (64%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £3,870 GBP at NZ Jewellers · As of October 14, 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6545992502. Listed at 19 retailers as of November 5, 2026, with a 181% 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
K
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6545992502
Dimensions9.15 × 6.15 × 3.84 mm
L/W Ratio1.49
Top View
9.15 mm6.15 mm1.51 ctK / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6545992502
Side View
Table 58.0%CrownGirdle: Very ThickPavilionCulet: NDepth 62.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £3,606 GBP|Low: £1,281 GBP|High: £3,870 GBP|Avg: £2,062 GBP|-6.8%
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
November 6, 2026
Retailer 3£1,281 GBP
Retailer 14£1,558 GBP
Retailer 5£1,600 GBP
Retailer 8£1,696 GBP
Retailer 2£1,718 GBP
Retailer 12£1,725 GBP
Retailer 10£1,783 GBP
Retailer 6£1,788 GBP
Retailer 16£1,804 GBP
Retailer 9£1,829 GBP
Retailer 13£1,874 GBP
Retailer 7£1,941 GBP
Retailer 4£1,990 GBP
Retailer 11£2,141 GBP
Retailer 15£3,014 GBP
NZ Jewellers£3,606 GBP

25 data points across 16 retailers

19 retailers£1,281 GBP to £3,606 GBP

A
Cheapest Retailer
-
£1,281 GBP
A
Retailer 2
-
£1,558 GBP
View
A
Retailer 3
-
£1,600 GBP
View
B+
Retailer 4
-
£1,696 GBP
View
A
Retailer 5
-
£1,718 GBP
View
A
Retailer 6
-
£1,725 GBP
View
B+
Retailer 7
-
£1,783 GBP
View
Retailer 8
-
£1,788 GBP
View
Price last confirmed 8 days ago
A
Retailer 9
-
£1,804 GBP
View
A
Retailer 10
-
£1,829 GBP
View
Retailer 11
-
£1,851 GBP
View
Price last confirmed 23 days ago
A
Retailer 12
-
£1,874 GBP
View
B+
Retailer 13
-
£1,941 GBP
View
A
Retailer 14
-
£1,990 GBP
View
B+
Retailer 15
-
£2,141 GBP
View
Retailer 16
-
£2,500 GBP
View
Price last confirmed 66 days ago
B+
Retailer 17
-
£3,014 GBP
View
B
Retailer 18
-
£3,606 GBP
View
Most Expensive
NZ Jewellers
1868feef-2f90-41e8-bedb-bb8eeaf51541 · Oct 14
£3,870 GBP
$5,180 USD
View
Price last confirmed 23 days ago
18 more retailers have this diamond
Prices start from £1,281 GBPSave up to £2,325 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
£1,281 GBP