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Round|Natural|IGI

1.07ct I SI1 Round Natural Diamond

EX • I/SI1 • IGI 816643977

Shape and cutting style on the report: Round brilliant

Certificate IGI 816643977

Diamond specifications and retailer prices

From £1,198 GBP
₹152,888 INR
As of November 1, 2026
Save £2,322 GBP (66%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £3,520 GBP at NZ Jewellers · As of October 27, 2026
View at NZ Jewellers

About this 1.07ct natural round diamond

This 1.07ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 816643977. Listed at 15 retailers as of October 27, 2026, with prices from £1,198 to £3,520, a £2,322 spread on the same certified stone. NZ Jewellers lists it at £3,520. 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

1.07
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.6°
OriginNatural
Grading LabIGI
CertificateIGI 816643977
Dimensions6.49 × 6.52 × 4.06 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
6.49 mm6.52 mm1.07 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 816643977
Side View
Table 56.0%Crown 35.6°Girdle: MED-STKPavilion 40.6°CuletDepth 62.4%

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 1
Current: £3,520 GBP|Low: £1,195 GBP|High: £3,520 GBP|Avg: £1,841 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
November 1, 2026
Retailer 2£1,198 GBP
Retailer 10£1,331 GBP
Retailer 5£1,389 GBP
Retailer 3£1,443 GBP
Retailer 12£1,493 GBP
Retailer 11£1,510 GBP
Retailer 4£1,666 GBP
Retailer 7£1,668 GBP
Retailer 9£1,758 GBP
Retailer 8£2,037 GBP
Retailer 6£2,529 GBP
NZ Jewellers£3,520 GBP

39 data points across 12 retailers

15 retailers£1,198 GBP to £3,520 GBP

A
Cheapest Retailer
-
£1,198 GBP
₹152,888 INR
A
Retailer 2
-
£1,331 GBP
$1,784 USD
View
Final sale: no returns
A
Retailer 3
-
£1,389 GBP
View
A
Retailer 4
-
£1,443 GBP
$1,934 USD
View
A
Retailer 5
-
£1,493 GBP
$2,000 USD
View
A
Retailer 6
-
£1,510 GBP
$2,023 USD
View
A
Retailer 7
-
£1,546 GBP
$2,072 USD
View
Retailer 8
-
£1,666 GBP
$2,232 USD
View
Price last confirmed 63 days ago
B+
Retailer 9
-
£1,666 GBP
$2,232 USD
View
B+
Retailer 10
-
£1,668 GBP
$2,235 USD
View
A
Retailer 11
-
£1,758 GBP
ZAR 38,044 ZAR
View
B+
Retailer 12
-
£2,037 GBP
€2,600 EUR
View
B
Retailer 13
-
£2,529 GBP
View
Retailer 14
-
£3,520 GBP
$4,717 USD
View
Price last confirmed 61 days ago
Most Expensive
B
NZ Jewellers
5671ff2e-7c88-4aa9-afe4-9615e10ca101 · Oct 27
£3,520 GBP
$4,717 USD
View
14 more retailers have this diamond
Prices start from £1,198 GBPSave up to £2,322 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
1.07ct Round
£1,198 GBP