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1.60ct M SI1 Round Natural Diamond

EX • M/SI1 • IGI 656470186

Shape and cutting style on the report: Round brilliant

Certificate IGI 656470186

Diamond specifications and retailer prices

From £765 GBP
As of November 5, 2026
Save £1,523 GBP (67%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £2,288 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 M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 656470186. Listed at 11 retailers as of November 5, 2026, with prices from £765 to £2,288, a £1,523 spread on the same certified stone. NZ Jewellers lists it at £2,288. 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
M
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle40.6°
OriginNatural
Grading LabIGI
CertificateIGI 656470186
Dimensions7.36 × 7.42 × 4.68 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
7.36 mm7.42 mm1.60 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 656470186
Side View
Table 56.0%Crown 36.2°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 63.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £2,288 GBP|Low: £765 GBP|High: £2,288 GBP|Avg: £1,109 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 4£765 GBP
Retailer 7£898 GBP
Retailer 3£938 GBP
Retailer 11£938 GBP
Retailer 8£974 GBP
Retailer 2£1,021 GBP
Retailer 6£1,025 GBP
Retailer 10£1,038 GBP
Retailer 9£1,083 GBP
Retailer 5£1,144 GBP
NZ Jewellers£2,288 GBP

45 data points across 11 retailers

11 retailers£765 GBP to £2,288 GBP

A
Cheapest Retailer
-
£765 GBP
A
Retailer 2
-
£898 GBP
View
Retailer 3
-
£938 GBP
View
Price last confirmed 8 days ago
A
Retailer 4
-
£938 GBP
View
B+
Retailer 5
-
£974 GBP
View
A
Retailer 6
-
£1,021 GBP
View
B+
Retailer 7
-
£1,025 GBP
View
B+
Retailer 8
-
£1,038 GBP
View
B+
Retailer 9
-
£1,083 GBP
View
A
Retailer 10
-
£1,144 GBP
View
Most Expensive
B+
NZ Jewellers
0be6bda2-040f-4dc3-b8f5-ded136d4830f · Nov 5
£2,288 GBP
$3,079 USD
View
10 more retailers have this diamond
Prices start from £765 GBPSave up to £1,523 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
£765 GBP