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1.60ct L SI1 Round Natural Diamond

EX • L/SI1 • IGI 623455489

Shape and cutting style on the report: Round brilliant

Certificate IGI 623455489

Diamond specifications and retailer prices

From $2,756 AUD
As of November 4, 2026
Save $3,623 AUD (57%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $6,378 AUD 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 L colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 623455489. Listed at 10 retailers as of November 4, 2026, with prices from $2,756 to $6,378, a $3,623 spread on the same certified stone. NZ Jewellers lists it at $6,378. 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
L
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle41°
OriginNatural
Grading LabIGI
CertificateIGI 623455489
Dimensions7.43 × 7.47 × 4.66 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
7.43 mm7.47 mm1.60 ctL / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 623455489
Side View
Table 58.0%Crown 35.4°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $6,378 AUD|Low: $2,756 AUD|High: $6,617 AUD|Avg: $3,723 AUD|-3.6%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 5, 2026
Retailer 8$2,756 AUD
Retailer 11$3,051 AUD
Retailer 12$3,051 AUD
Retailer 4$3,074 AUD
Retailer 7$3,078 AUD
Retailer 10$3,191 AUD
Retailer 13$3,248 AUD
Retailer 9$3,380 AUD
Retailer 3$3,520 AUD
Retailer 2$3,723 AUD
Retailer 6$4,141 AUD
Retailer 5$5,185 AUD
NZ Jewellers$6,378 AUD

29 data points across 13 retailers

10 retailers$2,756 AUD to $6,378 AUD

A
Cheapest Retailer
-
$2,756 AUD
Retailer 2
-
$3,051 AUD
View
Price last confirmed 8 days ago
A
Retailer 3
-
$3,051 AUD
View
A
Retailer 4
-
$3,078 AUD
View
B+
Retailer 5
-
$3,191 AUD
View
B+
Retailer 6
-
$3,248 AUD
View
B+
Retailer 7
-
$3,520 AUD
View
A
Retailer 8
-
$3,723 AUD
View
B+
Retailer 9
-
$4,141 AUD
View
Most Expensive
B
NZ Jewellers
4d7dcd95-ef8d-4172-939a-e61552f28d4d · Nov 5
$6,378 AUD
$4,465 USD
View
9 more retailers have this diamond
Prices start from $2,756 AUDSave up to $3,623 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
$2,756 AUD