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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 $303 AUD
$212 USD
As of November 1, 2026
Save $1,010 AUD (77%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,502 AUD 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

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 1
Current: $1,502 AUD|Low: $290 AUD|High: $1,519 AUD|Avg: $816 AUD|-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$303 AUD
Retailer 15$350 AUD
Retailer 3$374 AUD
Retailer 4$374 AUD
Retailer 10$632 AUD
Retailer 16$644 AUD
Retailer 6$675 AUD
Retailer 2$685 AUD
Retailer 11$688 AUD
Retailer 7$743 AUD
Retailer 9$986 AUD
Retailer 12$1,113 AUD
Retailer 5$1,203 AUD
Retailer 8$1,279 AUD
Retailer 14$1,313 AUD
MOH London$1,502 AUD

32 data points across 16 retailers

16 retailers$303 AUD to $1,313 AUD

A
Cheapest Retailer
-
$303 AUD
$212 USD
A
Retailer 2
-
$350 AUD
$245 USD
View
A
Retailer 3
-
$374 AUD
$262 USD
View
Retailer 4
-
$374 AUD
$262 USD
View
Price last confirmed 9 days ago
A
Retailer 5
-
$632 AUD
€422 EUR
View
B+
Retailer 6
-
$644 AUD
$451 USD
View
A
Retailer 7
-
$675 AUD
$473 USD
View
A
Retailer 8
-
$685 AUD
£378 GBP
View
A
Retailer 9
-
$688 AUD
£379 GBP
View
A
Retailer 10
-
$743 AUD
$521 USD
View
B+
Retailer 11
-
$986 AUD
$691 USD
View
B+
Retailer 12
-
$1,113 AUD
$780 USD
View
B+
Retailer 13
-
$1,203 AUD
$843 USD
View
B
Retailer 14
-
$1,279 AUD
$897 USD
View
B
Retailer 15
-
$1,313 AUD
$920 USD
View
Most Expensive
MOH London
LG818687021 · Oct 26
$1,502 AUD
£829 GBP
View
Price last confirmed 7 days ago
15 more retailers have this diamond
Prices start from $303 AUDSave up to $1,010 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
$303 AUD