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Round|Natural|GIA

1.50ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 5553036039

Certificate GIA 5553036039

Diamond specifications and retailer prices

From £1,873 GBP
As of November 6, 2026
Save £2,232 GBP (54%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £4,321 GBP at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1.5ct natural round diamond

This 1.5ct natural round sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5553036039. Listed at 16 retailers as of November 2, 2026, with a 119% 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle33.5°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 5553036039
Dimensions7.32 × 7.37 × 4.54 mm
L/W Ratio1.01
Top View
7.32 mm7.37 mm1.50 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5553036039
Side View
Table 60.0%Crown 33.5°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 61.8%

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: £1,973 GBP|Low: £1,873 GBP|High: £4,198 GBP|Avg: £2,590 GBP|-2.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9£1,873 GBP
Retailer 1£1,973 GBP
Retailer 6£2,180 GBP
Retailer 10£2,248 GBP
Retailer 2£2,455 GBP
Retailer 3£2,480 GBP
Retailer 7£2,525 GBP
Retailer 11£2,562 GBP
Retailer 4£2,600 GBP
Retailer 5£2,852 GBP
Retailer 8£4,105 GBP

38 data points across 11 retailers

16 retailers£1,873 GBP to £4,105 GBP

A
Cheapest Retailer
-
£1,873 GBP
A
Retailer 2
-
£1,973 GBP
View
A
Retailer 3
-
£2,180 GBP
View
A
Retailer 4
-
£2,248 GBP
View
A
Retailer 5
-
£2,294 GBP
View
Retailer 6
-
£2,455 GBP
View
Price last confirmed 17 days ago
Retailer 7
-
£2,480 GBP
View
Price last confirmed 39 days ago
Retailer 8
-
£2,480 GBP
View
Price last confirmed 21 days ago
A
Retailer 9
-
£2,525 GBP
View
B+
Retailer 10
-
£2,562 GBP
View
Retailer 11
-
£2,576 GBP
View
Price last confirmed 38 days ago
B+
Retailer 12
-
£2,600 GBP
View
B+
Retailer 13
-
£2,852 GBP
View
Retailer 14
-
£2,862 GBP
View
Price last confirmed 38 days ago
B
Retailer 15
-
£4,105 GBP
View
Most Expensive
NZ Jewellers
a57acf2a-190e-4ab8-973d-801dbbbb7728 · Sep 28
£4,321 GBP
$5,816 USD
View
Price last confirmed 39 days ago
15 more retailers have this diamond
Prices start from £1,873 GBPSave up to £2,232 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 Round
£1,873 GBP