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1.61ct L SI1 Round Natural Diamond

EX • L/SI1 • IGI 683598378

Shape and cutting style on the report: Round brilliant

Certificate IGI 683598378

Diamond specifications and retailer prices

From £1,313 GBP
As of November 5, 2026
Save £660 GBP (33%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,545 GBP at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1.61ct natural round diamond

This 1.61ct 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 683598378. Listed at 10 retailers as of November 5, 2026, with a 50% 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

1.61
Carat
L
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.4°
Pavilion angle41.5°
OriginNatural
Grading LabIGI
CertificateIGI 683598378
Dimensions7.42 × 7.38 × 4.69 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
Faint Brown
Top View
7.42 mm7.38 mm1.61 ctL / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 683598378
Side View
Table 60.0%Crown 36.4°Girdle: MED-STKPavilion 41.5°Culet: NoneDepth 63.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 5
Current: £1,583 GBP|Low: £1,313 GBP|High: £1,990 GBP|Avg: £1,584 GBP|-1.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 4£1,313 GBP
Retailer 7£1,453 GBP
Retailer 5£1,460 GBP
Retailer 6£1,482 GBP
Retailer 1£1,583 GBP
Retailer 2£1,774 GBP
Retailer 3£1,973 GBP

41 data points across 7 retailers

10 retailers£1,313 GBP to £1,973 GBP

A
Cheapest Retailer
-
£1,313 GBP
Retailer 2
-
£1,453 GBP
View
Price last confirmed 29 days ago
A
Retailer 3
-
£1,460 GBP
View
A
Retailer 4
-
£1,482 GBP
View
Retailer 5
-
£1,520 GBP
View
Price last confirmed 38 days ago
A
Retailer 6
-
£1,583 GBP
View
Retailer 7
-
£1,677 GBP
View
Price last confirmed 38 days ago
A
Retailer 8
-
£1,774 GBP
View
A
Retailer 9
-
£1,973 GBP
View
Most Expensive
NZ Jewellers
2a826691-9d40-449a-9acf-d4833ddfd072 · Sep 28
£3,545 GBP
$4,771 USD
View
Price last confirmed 39 days ago
9 more retailers have this diamond
Prices start from £1,313 GBPSave up to £660 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
1.61ct Round
£1,313 GBP