Round|Natural|IGI

1.60ct H SI1 Round Natural Diamond

EX • H/SI1 • IGI 674526478

Shape and cutting style on the report: Round brilliant

Certificate IGI 674526478

Diamond specifications and retailer prices

From £3,127 GBP
₹399,061 INR
As of October 26, 2026
Save £3,254 GBP (51%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £6,786 GBP at NZ Jewellers · As of September 28, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 674526478. Listed at 18 retailers as of October 26, 2026, with a 104% 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

1.60
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle41°
OriginNatural
Grading LabIGI
CertificateIGI 674526478
Dimensions7.45 × 7.36 × 4.64 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
7.45 mm7.36 mm1.60 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 674526478
Side View
Table 58.0%Crown 36.2°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.5%

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: Oct 26
Current: £4,872 GBP|Low: £3,118 GBP|High: £6,541 GBP|Avg: £4,257 GBP|-0.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 27, 2026
Retailer 5£3,127 GBP
Retailer 12£3,385 GBP
Retailer 3£3,489 GBP
Retailer 6£3,535 GBP
Retailer 9£3,541 GBP
Retailer 4£3,693 GBP
Retailer 7£3,931 GBP
Retailer 10£4,001 GBP
Retailer 11£4,115 GBP
Retailer 8£4,258 GBP
Retailer 1£4,872 GBP
Retailer 2£6,381 GBP

34 data points across 12 retailers

18 retailers£3,127 GBP to £6,381 GBP

A
Cheapest Retailer
-
£3,127 GBP
₹399,061 INR
Retailer 2
-
£3,385 GBP
$4,535 USD
View
Price last confirmed 7 days ago
A
Retailer 3
-
£3,489 GBP
$4,675 USD
View
A
Retailer 4
-
£3,535 GBP
$4,736 USD
View
Retailer 5
-
£3,541 GBP
$4,745 USD
View
Price last confirmed 5 days ago
A
Retailer 6
-
£3,931 GBP
View
Retailer 7
-
£4,001 GBP
$5,361 USD
View
Price last confirmed 7 days ago
Retailer 8
-
£4,058 GBP
$5,437 USD
View
Price last confirmed 31 days ago
Retailer 9
-
£4,058 GBP
$5,437 USD
View
Price last confirmed 32 days ago
B+
Retailer 10
-
£4,115 GBP
$5,514 USD
View
A
Retailer 11
-
£4,258 GBP
€5,434 EUR
View
Retailer 12
-
£4,682 GBP
$6,273 USD
View
Price last confirmed 32 days ago
Retailer 13
-
£4,682 GBP
$6,273 USD
View
Price last confirmed 23 days ago
B+
Retailer 14
-
£4,872 GBP
ZAR 105,456 ZAR
View
B
Retailer 15
-
£6,381 GBP
View
Retailer 16
-
£6,786 GBP
$9,093 USD
View
Price last confirmed 9 days ago
Retailer 17
-
£6,786 GBP
$9,093 USD
View
Price last confirmed 29 days ago
Most Expensive
NZ Jewellers
53b68915-3cfa-4a4d-a174-83554a9d2e67 · Sep 28
£6,786 GBP
$9,093 USD
View
Price last confirmed 34 days ago
17 more retailers have this diamond
Prices start from £3,127 GBPSave up to £3,254 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
£3,127 GBP