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Round|Lab Grown|IGI

1.60ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG818687021

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818687021

Diamond specifications and retailer prices

From $377 NZD
$212 USD
As of November 1, 2026
Save $1,258 NZD (77%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,871 NZD at MOH London · As of October 26, 2026
View at MOH London

About this 1.6ct lab-grown round diamond

This 1.6ct lab-grown round sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG818687021 or 818687021. Listed at 16 retailers as of November 1, 2026, with a 334% 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
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818687021
Dimensions7.48 × 7.53 × 4.59 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.48 mm7.53 mm1.60 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818687021
Side View
Table 59.0%Crown 35.1°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 61.2%

Caratlytics Score

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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 1
Current: $1,871 NZD|Low: $361 NZD|High: $1,892 NZD|Avg: $1,017 NZD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 3, 2026
Retailer 13$377 NZD
Retailer 15$435 NZD
Retailer 3$466 NZD
Retailer 4$466 NZD
Retailer 10$788 NZD
Retailer 16$802 NZD
Retailer 6$841 NZD
Retailer 2$853 NZD
Retailer 11$856 NZD
Retailer 7$926 NZD
Retailer 9$1,228 NZD
Retailer 12$1,386 NZD
Retailer 5$1,498 NZD
Retailer 8$1,593 NZD
Retailer 14$1,635 NZD
MOH London$1,871 NZD

32 data points across 16 retailers

16 retailers$377 NZD to $1,635 NZD

A
Cheapest Retailer
-
$377 NZD
$212 USD
A
Retailer 2
-
$435 NZD
$245 USD
View
A
Retailer 3
-
$466 NZD
$262 USD
View
Retailer 4
-
$466 NZD
$262 USD
View
Price last confirmed 9 days ago
A
Retailer 5
-
$788 NZD
€422 EUR
View
B+
Retailer 6
-
$802 NZD
$451 USD
View
A
Retailer 7
-
$841 NZD
$473 USD
View
A
Retailer 8
-
$853 NZD
£378 GBP
View
A
Retailer 9
-
$856 NZD
£379 GBP
View
A
Retailer 10
-
$926 NZD
$521 USD
View
B+
Retailer 11
-
$1,228 NZD
$691 USD
View
B+
Retailer 12
-
$1,386 NZD
$780 USD
View
B+
Retailer 13
-
$1,498 NZD
$843 USD
View
B
Retailer 14
-
$1,593 NZD
$897 USD
View
B
Retailer 15
-
$1,635 NZD
$920 USD
View
Most Expensive
MOH London
LG818687021 · Oct 26
$1,871 NZD
£829 GBP
View
Price last confirmed 7 days ago
15 more retailers have this diamond
Prices start from $377 NZDSave up to $1,258 NZD

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
$377 NZD