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Radiant|Natural|GIA

1.50ct H SI1 Radiant Natural Diamond

EX • H/SI1 • GIA 6552667733

Certificate GIA 6552667733

Diamond specifications and retailer prices

From £3,611 GBP
As of November 7, 2026
Save £3,174 GBP (47%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £6,785 GBP at NZ Jewellers · As of November 3, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6552667733. Listed at 10 retailers as of November 3, 2026, with prices from £3,611 to £6,785, a £3,174 spread on the same certified stone. NZ Jewellers lists it at £6,785. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle54.8°
Pavilion angle36.44°
OriginNatural
Grading LabGIA
CertificateGIA 6552667733
Dimensions7.40 × 5.66 × 3.95 mm
L/W Ratio1.31
Girdle conditionVery Thick
Key to symbols
Crystal, Needle, Natural
Top View
7.40 mm5.66 mm1.50 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552667733
Side View
Table 73.0%Crown 54.8°GirdlePavilion 36.44°Culet: NoneDepth 69.8%

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: £6,785 GBP|Low: £3,611 GBP|High: £6,953 GBP|Avg: £4,588 GBP|-2.4%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 3£3,611 GBP
Retailer 9£3,642 GBP
Retailer 6£3,822 GBP
Retailer 5£3,919 GBP
Retailer 4£3,922 GBP
Retailer 2£4,008 GBP
Retailer 8£4,057 GBP
Retailer 10£4,090 GBP
Retailer 7£6,461 GBP
NZ Jewellers£6,785 GBP

43 data points across 10 retailers

10 retailers£3,611 GBP to £6,785 GBP

A
Cheapest Retailer
-
£3,611 GBP
A
Retailer 2
-
£3,642 GBP
View
A
Retailer 3
-
£3,822 GBP
View
A
Retailer 4
-
£3,919 GBP
View
A
Retailer 5
-
£3,922 GBP
View
A
Retailer 6
-
£4,008 GBP
View
B+
Retailer 7
-
£4,057 GBP
View
Retailer 8
-
£4,090 GBP
View
Price last confirmed 29 days ago
B
Retailer 9
-
£6,461 GBP
View
Most Expensive
B
NZ Jewellers
a58e4b94-a83f-44b1-b18e-47b3b3ff79dd · Nov 3
£6,785 GBP
$9,082 USD
View
9 more retailers have this diamond
Prices start from £3,611 GBPSave up to £3,174 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
£3,611 GBP