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1.60ct K SI2 Round Natural Diamond

EX • K/SI2 • IGI 667434109

Shape and cutting style on the report: Round brilliant

Certificate IGI 667434109

Diamond specifications and retailer prices

From $2,588 AUD
As of November 6, 2026
Save $3,164 AUD (55%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $5,753 AUD at MOH London · As of November 4, 2026
View at MOH London

About this 1.6ct natural round diamond

This 1.6ct natural round sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 667434109. Listed at 4 retailers as of November 4, 2026, with prices from $2,588 to $5,753, a $3,164 spread on the same certified stone. MOH London lists it at $5,753. 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
K
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.6°
Pavilion angle41.5°
OriginNatural
Grading LabIGI
CertificateIGI 667434109
Dimensions7.60 × 7.63 × 4.57 mm
L/W Ratio1.00
Culet sizePointed
Top View
7.60 mm7.63 mm1.60 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 667434109
Side View
Table 60.0%Crown 31.6°Girdle: MediumPavilion 41.5°Culet: NoneDepth 60.1%

Caratlytics Score

How it works →
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 6
Current: $5,753 AUD|Low: $2,588 AUD|High: $5,838 AUD|Avg: $4,119 AUD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 2$2,588 AUD
Retailer 4$3,297 AUD
Retailer 3$3,980 AUD
MOH London$5,753 AUD

45 data points across 4 retailers

4 retailers$2,588 AUD to $5,753 AUD

A
Cheapest Retailer
-
$2,588 AUD
A
Retailer 2
-
$3,297 AUD
View
A
Retailer 3
-
$3,980 AUD
View
Most Expensive
B+
MOH London
20195F563 · Nov 4
$5,753 AUD
£3,171 GBP
View
3 more retailers have this diamond
Prices start from $2,588 AUDSave up to $3,164 AUD

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
$2,588 AUD