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Radiant|Natural|GIA

1.31ct D SI1 Radiant Natural Diamond

ID • D/SI1 • GIA 2235658202

Certificate GIA 2235658202

Diamond specifications and retailer prices

From £4,318 GBP
As of November 6, 2026
Save £1,515 GBP (26%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £5,954 GBP at Aurelinne · As of September 15, 2026
View at Aurelinne

About this 1.31ct natural radiant diamond

This 1.31ct natural radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2235658202. Listed at 8 retailers as of November 5, 2026, with a 35% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.31
Carat
D
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryVery Good
FluorescenceMedium
Crown angle44.62°
Pavilion angle31.58°
OriginNatural
Grading LabGIA
CertificateGIA 2235658202
Dimensions7.06 × 5.43 × 3.73 mm
L/W Ratio1.30
Girdle conditionVery Thick
Key to symbols
Crystal, Feather, Natural
Top View
7.06 mm5.43 mm1.31 ctD / SI1
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 2235658202
Side View
Table 66.0%Crown 44.62°Girdle: THK-VTKPavilion 31.58°Culet: NoneDepth 68.7%

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 6
Current: £5,954 GBP|Low: £3,520 GBP|High: £6,842 GBP|Avg: £5,360 GBP
Aurelinne
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 4£3,520 GBP
Retailer 7£4,318 GBP
Retailer 10£4,548 GBP
Retailer 8£4,764 GBP
Retailer 5£5,241 GBP
Retailer 6£5,611 GBP
Retailer 11£5,611 GBP
Retailer 12£5,798 GBP
Retailer 2£5,833 GBP
Aurelinne£5,954 GBP
Retailer 9£6,276 GBP
Retailer 3£6,842 GBP

34 data points across 12 retailers

8 retailers£4,318 GBP to £5,833 GBP

B+
Cheapest Retailer
-
£4,318 GBP
B+
Retailer 2
-
£4,561 GBP
View
B
Retailer 3
-
£5,241 GBP
View
B
Retailer 4
-
£5,611 GBP
View
B
Retailer 5
-
£5,611 GBP
View
B
Retailer 6
-
£5,798 GBP
View
B
Retailer 7
-
£5,833 GBP
View
Most Expensive
Aurelinne
ee34a407-fd3e-4697-91ed-b2bc31b33efe · Sep 15
£5,954 GBP
$7,969 USD
View
Price last confirmed 52 days ago
7 more retailers have this diamond
Prices start from £4,318 GBPSave up to £1,515 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+
1.31ct Radiant
£4,318 GBP