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Oval|Natural|GIA

1.50ct K SI2 Oval Natural Diamond

GD • K/SI2 • GIA 6555433574

Certificate GIA 6555433574

Diamond specifications and retailer prices

From £1,659 GBP
As of November 6, 2026
Save £2,579 GBP (61%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £4,238 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.5ct natural oval diamond

This 1.5ct 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 6555433574. Listed at 16 retailers as of November 5, 2026, with prices from £1,659 to £4,238, a £2,579 spread on the same certified stone. NZ Jewellers lists it at £4,238. 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

1.50
Carat
K
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle41.2°
Pavilion angle37.1°
OriginNatural
Grading LabGIA
CertificateGIA 6555433574
Dimensions8.68 × 6.47 × 4.16 mm
L/W Ratio1.34
Girdle conditionFaceted
Top View
8.68 mm6.47 mm1.50 ctK / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6555433574
Side View
Table 61.0%Crown 41.2°Girdle: THN-THKPavilion 37.1°Culet: NDepth 64.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £4,238 GBP|Low: £1,491 GBP|High: £4,303 GBP|Avg: £2,275 GBP|-1.5%
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 7£1,491 GBP
Retailer 4£1,564 GBP
Retailer 2£1,659 GBP
Retailer 16£1,695 GBP
Retailer 18£1,836 GBP
Retailer 5£1,883 GBP
Retailer 6£1,933 GBP
Retailer 17£1,999 GBP
Retailer 13£2,019 GBP
Retailer 9£2,027 GBP
Retailer 10£2,099 GBP
Retailer 8£2,105 GBP
Retailer 15£2,119 GBP
Retailer 14£2,145 GBP
Retailer 12£2,225 GBP
Retailer 19£2,365 GBP
Retailer 11£2,431 GBP
Retailer 3£3,555 GBP
NZ Jewellers£4,238 GBP

18 data points across 19 retailers

16 retailers£1,659 GBP to £4,238 GBP

Retailer 1
-
£1,491 GBP
Price last confirmed 10 days ago
Retailer 2
-
£1,564 GBP
View
Price last confirmed 11 days ago
B+
Retailer 3
-
£1,659 GBP
View
B+
Retailer 4
-
£1,695 GBP
View
Final sale: no returns
B+
Retailer 5
-
£1,836 GBP
View
B+
Retailer 6
-
£1,999 GBP
View
B+
Retailer 7
-
£2,019 GBP
View
Retailer 8
-
£2,027 GBP
View
Price last confirmed 12 days ago
Retailer 9
-
£2,099 GBP
View
Price last confirmed 10 days ago
Retailer 10
-
£2,105 GBP
View
Price last confirmed 12 days ago
B+
Retailer 11
-
£2,119 GBP
View
B+
Retailer 12
-
£2,145 GBP
View
B+
Retailer 13
-
£2,225 GBP
View
Retailer 14
-
£2,365 GBP
View
Price last confirmed 11 days ago
Retailer 15
-
£3,555 GBP
View
Price last confirmed 11 days ago
Most Expensive
B
NZ Jewellers
406ebf10-0fc8-4e8c-be76-39ae57f5715c · Nov 5
£4,238 GBP
$5,672 USD
View
15 more retailers have this diamond
Prices start from £1,659 GBPSave up to £2,579 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.

B+
1.50ct Oval
£1,659 GBP