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Oval|Natural|GIA

1.51ct K SI1 Oval Natural Diamond

VG • K/SI1 • GIA 5543492720

Certificate GIA 5543492720

Diamond specifications and retailer prices

From £1,747 GBP
As of November 6, 2026
Save £2,229 GBP (56%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £3,976 GBP at NZ Jewellers · As of November 5, 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 SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 5543492720. Listed at 14 retailers as of November 5, 2026, with prices from £1,747 to £3,976, a £2,229 spread on the same certified stone. NZ Jewellers lists it at £3,976. 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
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5543492720
Dimensions9.21 × 6.37 × 3.99 mm
L/W Ratio1.45
Top View
9.21 mm6.37 mm1.51 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5543492720
Side View
Table 59.0%CrownGirdle: ThickPavilionCulet: NDepth 62.7%

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: £3,976 GBP|Low: £1,348 GBP|High: £3,976 GBP|Avg: £2,003 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
November 6, 2026
Retailer 10£1,348 GBP
Retailer 15£1,747 GBP
Retailer 7£1,756 GBP
Retailer 9£1,760 GBP
Retailer 11£1,810 GBP
Retailer 3£1,851 GBP
Retailer 19£2,032 GBP
Retailer 17£2,068 GBP
Retailer 13£2,093 GBP
Retailer 5£2,147 GBP
Retailer 8£2,176 GBP
Retailer 2£2,214 GBP
Retailer 12£2,332 GBP
Retailer 18£2,359 GBP
Retailer 14£2,386 GBP
Retailer 6£2,504 GBP
Retailer 16£2,785 GBP
Retailer 4£3,059 GBP
NZ Jewellers£3,976 GBP

11 data points across 19 retailers

14 retailers£1,747 GBP to £3,976 GBP

A
Cheapest Retailer
-
£1,747 GBP
Retailer 2
-
£1,756 GBP
View
Price last confirmed 16 days ago
B+
Retailer 3
-
£1,851 GBP
View
B+
Retailer 4
-
£2,032 GBP
View
B+
Retailer 5
-
£2,068 GBP
View
B+
Retailer 6
-
£2,093 GBP
View
B+
Retailer 7
-
£2,147 GBP
View
B+
Retailer 8
-
£2,214 GBP
View
B+
Retailer 9
-
£2,332 GBP
View
B+
Retailer 10
-
£2,359 GBP
View
B+
Retailer 11
-
£2,386 GBP
View
B+
Retailer 12
-
£2,785 GBP
View
B+
Retailer 13
-
£3,059 GBP
View
Most Expensive
B
NZ Jewellers
0c405d4e-f861-4ade-b40e-77f1de424cea · Nov 5
£3,976 GBP
$5,322 USD
View
13 more retailers have this diamond
Prices start from £1,747 GBPSave up to £2,229 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
£1,747 GBP