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1.79ct L SI2 Round Natural Diamond

EX • L/SI2 • IGI 670479146

Shape and cutting style on the report: Round brilliant

Certificate IGI 670479146

Diamond specifications and retailer prices

From £1,623 GBP
As of November 4, 2026
Save £603 GBP (27%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £4,083 GBP at NZ Jewellers · As of October 6, 2026
View at NZ Jewellers

About this 1.79ct natural round diamond

This 1.79ct natural round sits in the one-and-a-half to two carat band, graded L colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 670479146. Listed at 8 retailers as of November 4, 2026, with a 37% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.79
Carat
L
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle40.7°
OriginNatural
Grading LabIGI
CertificateIGI 670479146
Dimensions7.82 × 7.87 × 4.75 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
7.82 mm7.87 mm1.79 ctL / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 670479146
Side View
Table 57.0%Crown 33.4°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 60.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: £2,227 GBP|Low: £1,623 GBP|High: £3,105 GBP|Avg: £2,211 GBP|+2.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 5, 2026
Retailer 2£1,623 GBP
Retailer 3£1,707 GBP
Retailer 4£2,175 GBP
Retailer 1£2,227 GBP
Retailer 5£3,105 GBP

30 data points across 5 retailers

8 retailers£1,623 GBP to £2,227 GBP

A
Cheapest Retailer
-
£1,623 GBP
A
Retailer 2
-
£1,707 GBP
View
Retailer 3
-
£1,913 GBP
View
Price last confirmed 38 days ago
Retailer 4
-
£1,953 GBP
View
Price last confirmed 25 days ago
Retailer 5
-
£1,953 GBP
View
Price last confirmed 30 days ago
A
Retailer 6
-
£2,227 GBP
View
Retailer 7
-
£2,253 GBP
View
Price last confirmed 28 days ago
Most Expensive
NZ Jewellers
7ad36bbb-d090-4f9d-9444-9e1641517257 · Oct 6
£4,083 GBP
$5,496 USD
View
Price last confirmed 31 days ago
7 more retailers have this diamond
Prices start from £1,623 GBPSave up to £603 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
1.79ct Round
£1,623 GBP