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Radiant|Natural|GIA

1.31ct D SI1 Radiant Natural Diamond

ID • D/SI1 • GIA 6561542175

Certificate GIA 6561542175

Diamond specifications and retailer prices

From £3,806 GBP
As of November 6, 2026
Save £4,537 GBP (54%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £8,343 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

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 6561542175. Listed at 24 retailers as of November 5, 2026, with prices from £3,806 to £8,343, a £4,537 spread on the same certified stone. NZ Jewellers lists it at £8,343. 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
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle47.74°
Pavilion angle54.25°
OriginNatural
Grading LabGIA
CertificateGIA 6561542175
Dimensions7.60 × 5.38 × 3.70 mm
L/W Ratio1.41
Culet sizeNone
Key to symbols
Crystal, Feather
Top View
7.60 mm5.38 mm1.31 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6561542175
Side View
Table 62.0%Crown 47.74°Girdle: STK-STKPavilion 54.25°Culet: 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 6
Current: £8,343 GBP|Low: £3,768 GBP|High: £8,343 GBP|Avg: £5,210 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
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 7, 2026
Retailer 18£3,806 GBP
Retailer 12£3,815 GBP
Retailer 17£4,143 GBP
Retailer 5£4,221 GBP
Retailer 19£4,425 GBP
Retailer 9£4,604 GBP
Retailer 6£4,628 GBP
Retailer 2£4,737 GBP
Retailer 13£4,839 GBP
Retailer 10£4,901 GBP
Retailer 4£4,988 GBP
Retailer 7£5,065 GBP
Retailer 11£5,106 GBP
Retailer 3£5,174 GBP
Retailer 14£5,420 GBP
Retailer 15£6,086 GBP
Retailer 8£7,226 GBP
Retailer 16£7,329 GBP
NZ Jewellers£8,343 GBP

23 data points across 19 retailers

24 retailers£3,806 GBP to £8,343 GBP

A
Cheapest Retailer
-
£3,806 GBP
A
Retailer 2
-
£3,815 GBP
View
B+
Retailer 3
-
£4,143 GBP
View
B+
Retailer 4
-
£4,208 GBP
View
B+
Retailer 5
-
£4,221 GBP
View
B+
Retailer 6
-
£4,350 GBP
View
B+
Retailer 7
-
£4,425 GBP
View
B+
Retailer 8
-
£4,604 GBP
View
Final sale: no returns
Retailer 9
-
£4,604 GBP
View
Price last confirmed 9 days ago
B+
Retailer 10
-
£4,628 GBP
View
B+
Retailer 11
-
£4,737 GBP
View
B+
Retailer 12
-
£4,839 GBP
View
B+
Retailer 13
-
£4,901 GBP
View
B+
Retailer 14
-
£4,988 GBP
View
B+
Retailer 15
-
£5,065 GBP
View
B
Retailer 16
-
£5,106 GBP
View
B
Retailer 17
-
£5,107 GBP
View
B+
Retailer 18
-
£5,174 GBP
View
B+
Retailer 19
-
£5,420 GBP
View
B
Retailer 20
-
£5,756 GBP
View
B
Retailer 21
-
£6,086 GBP
View
B
Retailer 22
-
£7,226 GBP
View
B
Retailer 23
-
£7,329 GBP
View
Most Expensive
B
NZ Jewellers
84cb34aa-0d74-4df5-a106-0b0c567a3de4 · Nov 5
£8,343 GBP
$11,167 USD
View
23 more retailers have this diamond
Prices start from £3,806 GBPSave up to £4,537 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
1.31ct Radiant
£3,806 GBP