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Round|Natural|IGI

1.00ct D IF Round Natural Diamond

EX • D/IF • IGI 835672636

Shape and cutting style on the report: Round brilliant

Certificate IGI 835672636

Diamond specifications and retailer prices

From £3,735 GBP
As of November 5, 2026
Save £5,831 GBP (61%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £9,566 GBP at GS Diamonds · As of November 4, 2026
View at GS Diamonds

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI 835672636. Listed at 19 retailers as of November 4, 2026, with prices from £3,735 to £9,566, a £5,831 spread on the same certified stone. GS Diamonds lists it at £9,566. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.00
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle36.1°
Pavilion angle40.7°
OriginNatural
Grading LabIGI
CertificateIGI 835672636
Dimensions6.37 × 6.41 × 3.99 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
6.37 mm6.41 mm1.00 ctD / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateIGI 835672636
Side View
Table 56.0%Crown 36.1°Girdle: MediumPavilion 40.7°Culet: NoneDepth 62.5%

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 5
Current: £9,566 GBP|Low: £3,735 GBP|High: £12,764 GBP|Avg: £5,221 GBP|-4.5%
GS Diamonds
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 6, 2026
Retailer 14£3,735 GBP
Retailer 6£3,983 GBP
Retailer 10£4,011 GBP
Retailer 9£4,080 GBP
Retailer 4£4,157 GBP
Retailer 7£4,208 GBP
Retailer 15£4,273 GBP
Retailer 13£4,399 GBP
Retailer 18£4,419 GBP
Retailer 8£4,561 GBP
Retailer 2£4,802 GBP
Retailer 16£4,942 GBP
Retailer 12£5,127 GBP
Retailer 5£5,702 GBP
Retailer 11£7,233 GBP
Retailer 19£7,261 GBP
Retailer 17£8,266 GBP
Retailer 3£9,265 GBP
GS Diamonds£9,566 GBP

21 data points across 19 retailers

19 retailers£3,735 GBP to £9,566 GBP

A
Cheapest Retailer
-
£3,735 GBP
Retailer 2
-
£3,983 GBP
View
Price last confirmed 12 days ago
A
Retailer 3
-
£4,011 GBP
View
A
Retailer 4
-
£4,080 GBP
View
A
Retailer 5
-
£4,157 GBP
View
A
Retailer 6
-
£4,208 GBP
View
A
Retailer 7
-
£4,273 GBP
View
A
Retailer 8
-
£4,399 GBP
View
A
Retailer 9
-
£4,419 GBP
View
A
Retailer 10
-
£4,561 GBP
View
Final sale: no returns
A
Retailer 11
-
£4,802 GBP
View
A
Retailer 12
-
£4,942 GBP
View
A
Retailer 13
-
£5,127 GBP
View
A
Retailer 14
-
£5,702 GBP
View
B+
Retailer 15
-
£7,233 GBP
View
B+
Retailer 16
-
£7,261 GBP
View
B+
Retailer 17
-
£8,266 GBP
View
B
Retailer 18
-
£9,265 GBP
View
Most Expensive
B+
GS Diamonds
S2A9-1168769089 · Nov 4
£9,566 GBP
A$19,807 AUD
View
18 more retailers have this diamond
Prices start from £3,735 GBPSave up to £5,831 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
1.00ct Round
£3,735 GBP