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Radiant|Natural|GIA

1.03ct I SI1 Radiant Natural Diamond

ID • I/SI1 • GIA 5556739700

Certificate GIA 5556739700

Diamond specifications and retailer prices

From £1,320 GBP
As of November 6, 2026
Save £279 GBP (17%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £1,599 GBP at Jared · As of November 6, 2026
View at Jared

About this 1.03ct natural radiant diamond

This 1.03ct natural radiant sits in the classic one-carat band, graded I 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 5556739700. Listed at 7 retailers as of November 6, 2026, with prices from £1,320 to £1,599, a £279 spread on the same certified stone. Jared lists it at £1,599. 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

1.03
Carat
I
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5556739700
Dimensions6.90 × 5.00 × 3.37 mm
L/W Ratio1.38
Culet sizeNone
Key to symbols
Feather, Needle, Pinpoint, Cloud
Top View
6.90 mm5.00 mm1.03 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5556739700
Side View
Table 66.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 67.4%

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 6
Current: £1,599 GBP|Low: £1,320 GBP|High: £1,659 GBP|Avg: £1,510 GBP|-3.6%
Jared
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 19, 2026
Retailer 3£1,320 GBP
Retailer 7£1,393 GBP
Retailer 5£1,456 GBP
Retailer 6£1,508 GBP
Retailer 2£1,547 GBP
Retailer 4£1,547 GBP
Jared£1,599 GBP

11 data points across 7 retailers

7 retailers£1,320 GBP to £1,599 GBP

A
Cheapest Retailer
-
£1,320 GBP
A
Retailer 2
-
£1,393 GBP
View
A
Retailer 3
-
£1,456 GBP
View
A
Retailer 4
-
£1,508 GBP
View
A
Retailer 5
-
£1,547 GBP
View
A
Retailer 6
-
£1,547 GBP
View
Most Expensive
B+
Jared
159946342 · Nov 6
£1,599 GBP
$2,140 USD
View
6 more retailers have this diamond
Prices start from £1,320 GBPSave up to £279 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
1.03ct Radiant
£1,320 GBP