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1.62ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG780656005

Shape and cutting style on the report: Round brilliant

Certificate IGI LG780656005

Diamond specifications and retailer prices

From $340 AUD
$239 USD
As of October 29, 2026
Save $1,359 AUD (80%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,699 AUD at MOH London · As of October 29, 2026
View at MOH London

About this 1.62ct lab-grown round diamond

This 1.62ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG780656005 or 780656005. Listed at 16 retailers as of October 29, 2026, with prices from $340 to $1,699, a $1,359 spread on the same certified stone. MOH London lists it at $1,699. 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

1.62
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780656005
Dimensions7.57 × 7.52 × 4.62 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.57 mm7.52 mm1.62 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780656005
Side View
Table 58.0%Crown 33.9°Girdle: THN-STKPavilion 40.7°Culet: NoneDepth 61.2%

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 29
Current: $1,699 AUD|Low: $326 AUD|High: $1,741 AUD|Avg: $801 AUD|-2.4%
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 1, 2026
Retailer 13$340 AUD
Retailer 14$382 AUD
Retailer 4$394 AUD
Retailer 7$421 AUD
Retailer 15$421 AUD
Retailer 10$659 AUD
Retailer 9$692 AUD
Retailer 5$710 AUD
Retailer 6$722 AUD
Retailer 16$786 AUD
Retailer 2$796 AUD
Retailer 12$1,096 AUD
Retailer 11$1,189 AUD
Retailer 3$1,355 AUD
Retailer 8$1,481 AUD
MOH London$1,699 AUD

34 data points across 16 retailers

16 retailers$340 AUD to $1,699 AUD

A
Cheapest Retailer
-
$340 AUD
$239 USD
A
Retailer 2
-
$382 AUD
$268 USD
View
Final sale: no returns
A
Retailer 3
-
$394 AUD
$277 USD
View
A
Retailer 4
-
$421 AUD
$296 USD
View
A
Retailer 5
-
$421 AUD
$296 USD
View
A
Retailer 6
-
$659 AUD
£365 GBP
View
A
Retailer 7
-
$692 AUD
€463 EUR
View
A
Retailer 8
-
$710 AUD
$499 USD
View
A
Retailer 9
-
$722 AUD
$507 USD
View
A
Retailer 10
-
$786 AUD
$552 USD
View
A
Retailer 11
-
$796 AUD
£441 GBP
View
B
Retailer 12
-
$1,096 AUD
$770 USD
View
B+
Retailer 13
-
$1,189 AUD
$835 USD
View
B
Retailer 14
-
$1,355 AUD
$952 USD
View
B
Retailer 15
-
$1,481 AUD
$1,040 USD
View
Most Expensive
B
MOH London
LG780656005 · Oct 29
$1,699 AUD
£940 GBP
View
15 more retailers have this diamond
Prices start from $340 AUDSave up to $1,359 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
1.62ct Round
$340 AUD