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Radiant|Natural|GIA

1.05ct F SI2 Radiant Natural Diamond

ID • F/SI2 • GIA 6551511426

Certificate GIA 6551511426

Diamond specifications and retailer prices

From £1,126 GBP
HK$11,800 HKD
As of November 1, 2026
Save £2,416 GBP (68%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £3,542 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.05ct natural radiant diamond

This 1.05ct natural radiant sits in the classic one-carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551511426. Listed at 13 retailers as of October 30, 2026, with prices from £1,126 to £3,542, a £2,416 spread on the same certified stone. NZ Jewellers lists it at £3,542. 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

1.05
Carat
F
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551511426
Dimensions7.29 × 5.01 × 3.45 mm
L/W Ratio1.46
Culet sizeNone
Key to symbols
Feather, Crystal, Needle
Top View
7.29 mm5.01 mm1.05 ctF / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551511426
Side View
Table 66.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 68.8%

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 1
Current: £3,542 GBP|Low: £1,092 GBP|High: £3,542 GBP|Avg: £1,666 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 7£1,126 GBP
Retailer 2£1,136 GBP
Retailer 11£1,341 GBP
Retailer 5£1,436 GBP
Retailer 10£1,452 GBP
Retailer 12£1,484 GBP
Retailer 9£1,519 GBP
Retailer 3£1,559 GBP
Retailer 4£1,589 GBP
Retailer 8£1,675 GBP
Retailer 6£2,544 GBP
NZ Jewellers£3,542 GBP

42 data points across 12 retailers

13 retailers£1,126 GBP to £3,542 GBP

A
Cheapest Retailer
-
£1,126 GBP
HK$11,800 HKD
A
Retailer 2
-
£1,136 GBP
₹145,149 INR
View
A
Retailer 3
-
£1,341 GBP
$1,799 USD
View
Final sale: no returns
A
Retailer 4
-
£1,436 GBP
View
A
Retailer 5
-
£1,452 GBP
$1,949 USD
View
A
Retailer 6
-
£1,484 GBP
$1,991 USD
View
A
Retailer 7
-
£1,519 GBP
$2,038 USD
View
A
Retailer 8
-
£1,559 GBP
SGD 2,828 SGD
View
A
Retailer 9
-
£1,589 GBP
$2,133 USD
View
A
Retailer 10
-
£1,617 GBP
A$3,338 AUD
View
A
Retailer 11
-
£1,675 GBP
$2,248 USD
View
B+
Retailer 12
-
£2,544 GBP
View
Most Expensive
B
NZ Jewellers
43c1ca4a-2d18-4d67-a624-6c6a5a43d327 · Oct 30
£3,542 GBP
$4,753 USD
View
12 more retailers have this diamond
Prices start from £1,126 GBPSave up to £2,416 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
1.05ct Radiant
£1,126 GBP