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Radiant|Natural|GIA

0.90ct H SI1 Radiant Natural Diamond

EX • H/SI1 • GIA 6422027438

Certificate GIA 6422027438

Diamond specifications and retailer prices

From £1,144 GBP
$1,533 USD
As of November 1, 2026
Save £1,917 GBP (63%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £3,061 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.9ct natural radiant diamond

This 0.9ct natural radiant sits in the just-under-one-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 6422027438. Listed at 9 retailers as of October 30, 2026, with prices from £1,144 to £3,061, a £1,917 spread on the same certified stone. NZ Jewellers lists it at £3,061. 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

0.90
Carat
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 6422027438
Dimensions6.04 × 4.79 × 3.33 mm
L/W Ratio1.26
Top View
6.04 mm4.79 mm0.90 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6422027438
Side View
Table 64.0%CrownGirdle: VTH-VTHPavilionCulet: NoneDepth 69.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £3,061 GBP|Low: £1,144 GBP|High: £3,061 GBP|Avg: £1,784 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 9£1,144 GBP
Retailer 8£1,310 GBP
Retailer 7£1,346 GBP
Retailer 5£1,466 GBP
Retailer 10£1,532 GBP
Retailer 6£1,638 GBP
Retailer 4£1,851 GBP
Retailer 3£2,199 GBP
Retailer 2£2,415 GBP
NZ Jewellers£3,061 GBP

42 data points across 10 retailers

9 retailers£1,144 GBP to £3,061 GBP

B+
Cheapest Retailer
-
£1,144 GBP
$1,533 USD
B+
Retailer 2
-
£1,310 GBP
$1,755 USD
View
B+
Retailer 3
-
£1,346 GBP
$1,804 USD
View
B+
Retailer 4
-
£1,466 GBP
View
Retailer 5
-
£1,638 GBP
A$3,376 AUD
View
Price last confirmed 27 days ago
B
Retailer 6
-
£1,851 GBP
ZAR 40,071 ZAR
View
B
Retailer 7
-
£2,199 GBP
View
B
Retailer 8
-
£2,415 GBP
View
Most Expensive
B
NZ Jewellers
f6c36a49-f60d-47c0-a2f2-4f5cd3a15a05 · Oct 30
£3,061 GBP
$4,102 USD
View
8 more retailers have this diamond
Prices start from £1,144 GBPSave up to £1,917 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.

B+
0.90ct Radiant
£1,144 GBP