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Radiant|Natural|GIA

1.03ct D SI1 Radiant Natural Diamond

GD • D/SI1 • GIA 133

Certificate GIA 133

Diamond specifications and retailer prices

From £2,861 GBP
As of November 6, 2026
Save £149 GBP (5%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £3,011 GBP at DreamStone · As of November 4, 2026
View at DreamStone

About this 1.03ct natural radiant diamond

This 1.03ct natural radiant sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 2 retailers as of November 4, 2026, with a relatively tight 5% spread, which is unusual at this carat range and suggests competitive pricing across the listings. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.03
Carat
D
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 133
Dimensions5.97 × 5.16 mm
L/W Ratio1.16
Top View
5.97 mm5.16 mm1.03 ctD / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 133
Side View
Table 72.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 81.2%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 6
Current: £3,011 GBP|Low: £2,823 GBP|High: £3,011 GBP|Avg: £2,943 GBP
DreamStone
Retailer 2
September 23, 2026
Retailer 2£2,861 GBP
DreamStone£3,011 GBP

3 data points across 2 retailers

2 retailers£2,861 GBP to £3,011 GBP

B
Cheapest Retailer
-
£2,861 GBP
Most Expensive
B
DreamStone
618a7a8f9e99f910f90657da · Nov 4
£3,011 GBP
$4,030 USD
View
1 more retailer has this diamond
Prices start from £2,861 GBPSave up to £149 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
1.03ct Radiant
£2,861 GBP