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Oval|Natural|GIA

1.50ct K SI1 Oval Natural Diamond

EX • K/SI1 • GIA 7551728271

Certificate GIA 7551728271

Diamond specifications and retailer prices

From £1,644 GBP
As of November 6, 2026
Save £2,958 GBP (64%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £4,641 GBP at NZ Jewellers · As of August 30, 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 7551728271. Listed at 21 retailers as of November 5, 2026, with a 180% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7551728271
Dimensions8.72 × 6.32 × 3.99 mm
L/W Ratio1.38
Top View
8.72 mm6.32 mm1.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7551728271
Side View
Table 60.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 63.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £4,602 GBP|Low: £1,644 GBP|High: £4,602 GBP|Avg: £2,455 GBP|+13.2%
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£1,644 GBP
Retailer 5£1,889 GBP
Retailer 8£1,890 GBP
Retailer 3£1,971 GBP
Retailer 11£2,092 GBP
Retailer 2£2,135 GBP
Retailer 19£2,152 GBP
Retailer 17£2,202 GBP
Retailer 10£2,267 GBP
Retailer 13£2,281 GBP
Retailer 6£2,286 GBP
Retailer 12£2,307 GBP
Retailer 18£2,330 GBP
Retailer 16£2,368 GBP
Retailer 9£2,540 GBP
Retailer 14£2,563 GBP
Retailer 15£2,687 GBP
Retailer 4£3,671 GBP
NZ Jewellers£4,602 GBP

23 data points across 19 retailers

21 retailers£1,644 GBP to £4,602 GBP

A
Cheapest Retailer
-
£1,644 GBP
A
Retailer 2
-
£1,889 GBP
View
A
Retailer 3
-
£1,890 GBP
View
A
Retailer 4
-
£1,971 GBP
View
A
Retailer 5
-
£2,092 GBP
View
A
Retailer 6
-
£2,135 GBP
View
A
Retailer 7
-
£2,152 GBP
View
A
Retailer 8
-
£2,202 GBP
View
Retailer 9
-
£2,267 GBP
View
Price last confirmed 8 days ago
A
Retailer 10
-
£2,281 GBP
View
A
Retailer 11
-
£2,286 GBP
View
A
Retailer 12
-
£2,307 GBP
View
A
Retailer 13
-
£2,330 GBP
View
Retailer 14
-
£2,333 GBP
View
Price last confirmed 23 days ago
A
Retailer 15
-
£2,368 GBP
View
A
Retailer 16
-
£2,540 GBP
View
A
Retailer 17
-
£2,563 GBP
View
A
Retailer 18
-
£2,687 GBP
View
B+
Retailer 19
-
£3,671 GBP
View
B
Retailer 20
-
£4,602 GBP
View
Most Expensive
NZ Jewellers
b65d4127-8da9-4d77-a258-9453db5cf266 · Aug 30
£4,641 GBP
$6,212 USD
View
Price last confirmed 68 days ago
20 more retailers have this diamond
Prices start from £1,644 GBPSave up to £2,958 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
1.50ct Oval
£1,644 GBP