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Radiant|Natural|GIA

1.50ct K SI1 Radiant Natural Diamond

EX • K/SI1 • GIA 7558451105

Certificate GIA 7558451105

Diamond specifications and retailer prices

From £2,563 GBP
As of November 7, 2026
Save £2,078 GBP (45%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £4,641 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.5ct natural radiant diamond

This 1.5ct natural radiant 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 7558451105. Listed at 11 retailers as of November 5, 2026, with prices from £2,563 to £4,641, a £2,078 spread on the same certified stone. NZ Jewellers lists it at £4,641. 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
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7558451105
Dimensions7.75 × 5.36 × 3.81 mm
L/W Ratio1.45
Girdle conditionPolished
Culet sizeNone
Key to symbols
Crystal, Feather, Needle, Pinpoint
Top View
7.75 mm5.36 mm1.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7558451105
Side View
Table 64.0%CrownGirdle: VTK-ETKPavilionCulet: NoneDepth 71.0%

Caratlytics Score

How it works →
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 7
Current: £4,641 GBP|Low: £2,563 GBP|High: £4,641 GBP|Avg: £3,154 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 3£2,563 GBP
Retailer 4£2,584 GBP
Retailer 8£2,663 GBP
Retailer 10£2,663 GBP
Retailer 2£2,756 GBP
Retailer 11£2,766 GBP
Retailer 9£3,074 GBP
Retailer 5£3,101 GBP
Retailer 6£3,251 GBP
Retailer 7£4,442 GBP
NZ Jewellers£4,641 GBP

33 data points across 11 retailers

11 retailers£2,563 GBP to £4,641 GBP

A
Cheapest Retailer
-
£2,563 GBP
A
Retailer 2
-
£2,584 GBP
View
Retailer 3
-
£2,663 GBP
View
Price last confirmed 13 days ago
A
Retailer 4
-
£2,663 GBP
View
A
Retailer 5
-
£2,756 GBP
View
B+
Retailer 6
-
£2,766 GBP
View
B+
Retailer 7
-
£3,074 GBP
View
B+
Retailer 8
-
£3,101 GBP
View
B+
Retailer 9
-
£3,251 GBP
View
B
Retailer 10
-
£4,442 GBP
View
Most Expensive
B
NZ Jewellers
1930ef7e-aff1-4fa7-af8f-e59a4e7b45cd · Nov 5
£4,641 GBP
$6,212 USD
View
10 more retailers have this diamond
Prices start from £2,563 GBPSave up to £2,078 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 Radiant
£2,563 GBP