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Oval|Natural|GIA

1.50ct K SI1 Oval Natural Diamond

EX • K/SI1 • GIA 2564543888

Certificate GIA 2564543888

Diamond specifications and retailer prices

From £3,204 GBP
As of November 6, 2026
Save £3,792 GBP (54%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £6,996 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2564543888. Listed at 22 retailers as of November 5, 2026, with prices from £3,204 to £6,996, a £3,792 spread on the same certified stone. NZ Jewellers lists it at £6,996. 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

1.50
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle41.92°
Pavilion angle38.57°
OriginNatural
Grading LabGIA
CertificateGIA 2564543888
Dimensions8.42 × 6.04 × 3.97 mm
L/W Ratio1.39
Culet sizeLarge
Key to symbols
Twinning Wisp, Crystal, Indented Natural
Top View
8.42 mm6.04 mm1.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2564543888
Side View
Table 53.0%Crown 41.92°Girdle: THK-ETKPavilion 38.57°Culet: LargeDepth 65.7%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: £6,996 GBP|Low: £3,174 GBP|High: £6,996 GBP|Avg: £4,531 GBP
NZ Jewellers
Retailer 2
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Retailer 22
November 6, 2026
Retailer 20£3,204 GBP
Retailer 2£3,235 GBP
Retailer 3£3,530 GBP
Retailer 8£3,571 GBP
Retailer 12£3,648 GBP
Retailer 18£3,692 GBP
Retailer 22£3,836 GBP
Retailer 10£3,911 GBP
Retailer 16£4,016 GBP
Retailer 14£4,073 GBP
Retailer 4£4,183 GBP
Retailer 6£4,183 GBP
Retailer 21£4,183 GBP
Retailer 9£4,297 GBP
Retailer 5£4,372 GBP
Retailer 13£4,707 GBP
Retailer 11£4,826 GBP
Retailer 17£5,104 GBP
Retailer 7£6,079 GBP
Retailer 15£6,250 GBP
Retailer 19£6,644 GBP
NZ Jewellers£6,996 GBP

24 data points across 22 retailers

22 retailers£3,204 GBP to £6,996 GBP

B+
Cheapest Retailer
-
£3,204 GBP
B+
Retailer 2
-
£3,235 GBP
View
Retailer 3
-
£3,530 GBP
View
Price last confirmed 16 days ago
B+
Retailer 4
-
£3,571 GBP
View
B+
Retailer 5
-
£3,648 GBP
View
B+
Retailer 6
-
£3,692 GBP
View
B+
Retailer 7
-
£3,836 GBP
View
B
Retailer 8
-
£3,911 GBP
View
B
Retailer 9
-
£4,016 GBP
View
Retailer 10
-
£4,073 GBP
View
Price last confirmed 22 days ago
B
Retailer 11
-
£4,183 GBP
View
Retailer 12
-
£4,183 GBP
View
Price last confirmed 8 days ago
B
Retailer 13
-
£4,183 GBP
View
B
Retailer 14
-
£4,297 GBP
View
B
Retailer 15
-
£4,372 GBP
View
B
Retailer 16
-
£4,707 GBP
View
B
Retailer 17
-
£4,826 GBP
View
B
Retailer 18
-
£5,104 GBP
View
B
Retailer 19
-
£6,079 GBP
View
B
Retailer 20
-
£6,250 GBP
View
B
Retailer 21
-
£6,644 GBP
View
Most Expensive
C
NZ Jewellers
6472b515-dd9f-4a76-be3e-566085752808 · Nov 5
£6,996 GBP
$9,364 USD
View
21 more retailers have this diamond
Prices start from £3,204 GBPSave up to £3,792 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
£3,204 GBP