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Round|Natural|IGI

1.60ct L SI1 Round Natural Diamond

EX • L/SI1 • IGI 605313279

Shape and cutting style on the report: Round brilliant

Certificate IGI 605313279

Diamond specifications and retailer prices

From £1,545 GBP
As of November 5, 2026
Save £2,955 GBP (66%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £4,500 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.6ct natural round diamond

This 1.6ct natural round sits in the one-and-a-half to two carat band, graded L colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 605313279. Listed at 13 retailers as of November 5, 2026, with prices from £1,545 to £4,500, a £2,955 spread on the same certified stone. NZ Jewellers lists it at £4,500. 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

1.60
Carat
L
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.5°
Pavilion angle40.8°
OriginNatural
Grading LabIGI
CertificateIGI 605313279
Dimensions7.54 × 7.59 × 4.55 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
7.54 mm7.59 mm1.60 ctL / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 605313279
Side View
Table 59.0%Crown 32.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.2%

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: £2,343 GBP|Low: £1,545 GBP|High: £2,645 GBP|Avg: £2,131 GBP|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 4£1,545 GBP
Retailer 6£1,880 GBP
Retailer 5£1,927 GBP
Retailer 7£2,106 GBP
Retailer 8£2,235 GBP
Retailer 1£2,343 GBP
Retailer 2£2,373 GBP
Retailer 3£2,626 GBP

39 data points across 8 retailers

13 retailers£1,545 GBP to £4,500 GBP

A
Cheapest Retailer
-
£1,545 GBP
B+
Retailer 2
-
£1,880 GBP
View
B+
Retailer 3
-
£1,927 GBP
View
B+
Retailer 4
-
£2,106 GBP
View
B+
Retailer 5
-
£2,152 GBP
View
Retailer 6
-
£2,152 GBP
View
Price last confirmed 8 days ago
B+
Retailer 7
-
£2,235 GBP
View
B+
Retailer 8
-
£2,258 GBP
View
B+
Retailer 9
-
£2,343 GBP
View
B+
Retailer 10
-
£2,373 GBP
View
B+
Retailer 11
-
£2,484 GBP
View
B+
Retailer 12
-
£2,626 GBP
View
Most Expensive
C
NZ Jewellers
451adfca-eb78-428d-96f9-cd41586214a6 · Nov 5
£4,500 GBP
$6,056 USD
View
12 more retailers have this diamond
Prices start from £1,545 GBPSave up to £2,955 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
1.60ct Round
£1,545 GBP