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Radiant|Natural|GIA

1.50ct K SI1 Radiant Natural Diamond

EX • K/SI1 • GIA 2554814067

Certificate GIA 2554814067

Diamond specifications and retailer prices

From £2,985 GBP
As of November 7, 2026
Save £2,462 GBP (45%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £5,446 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 2554814067. Listed at 11 retailers as of November 5, 2026, with prices from £2,985 to £5,446, a £2,462 spread on the same certified stone. NZ Jewellers lists it at £5,446. 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 2554814067
Dimensions8.21 × 5.67 × 3.80 mm
L/W Ratio1.45
Culet sizeNone
Top View
8.21 mm5.67 mm1.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2554814067
Side View
Table 67.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 67.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 7
Current: £5,446 GBP|Low: £2,985 GBP|High: £5,792 GBP|Avg: £3,744 GBP|-6.0%
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£2,985 GBP
Retailer 4£3,033 GBP
Retailer 8£3,126 GBP
Retailer 10£3,126 GBP
Retailer 11£3,126 GBP
Retailer 2£3,166 GBP
Retailer 5£3,517 GBP
Retailer 9£3,607 GBP
Retailer 6£3,815 GBP
Retailer 7£5,213 GBP
NZ Jewellers£5,446 GBP

29 data points across 11 retailers

11 retailers£2,985 GBP to £5,446 GBP

A
Cheapest Retailer
-
£2,985 GBP
B+
Retailer 2
-
£3,033 GBP
View
B+
Retailer 3
-
£3,126 GBP
View
Retailer 4
-
£3,126 GBP
View
Price last confirmed 9 days ago
B+
Retailer 5
-
£3,126 GBP
View
B+
Retailer 6
-
£3,166 GBP
View
B+
Retailer 7
-
£3,517 GBP
View
B+
Retailer 8
-
£3,607 GBP
View
B+
Retailer 9
-
£3,815 GBP
View
B
Retailer 10
-
£5,213 GBP
View
Most Expensive
B
NZ Jewellers
ed42692b-97ac-4d77-86b6-d376420476bd · Nov 5
£5,446 GBP
$7,290 USD
View
10 more retailers have this diamond
Prices start from £2,985 GBPSave up to £2,462 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
£2,985 GBP