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Round|Lab Grown|IGI

1.62ct G SI1 Round Lab Grown Diamond

EX • G/SI1 • IGI LG425078889

Shape and cutting style on the report: Round brilliant

Certificate IGI LG425078889

Diamond specifications and retailer prices

From $615 AUD
$432 USD
As of October 30, 2026
Save $2,073 AUD (77%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $4,470 AUD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG425078889 or 425078889. Listed at 13 retailers as of October 30, 2026, with a 337% 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

1.62
Carat
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG425078889
Dimensions7.49 × 7.54 × 4.67 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Chemical Vapor Deposition (CVD) laboratory grown diamond is classified as Type IIa
Top View
7.49 mm7.54 mm1.62 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG425078889
Side View
Table 59.0%Crown 35.5°Girdle: MediumPavilion 41.6°Culet: NoneDepth 62.2%

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: Oct 30
Current: $4,470 AUD|Low: $615 AUD|High: $4,470 AUD|Avg: $1,683 AUD
Do Amore Diamonds
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 1, 2026
Retailer 10$615 AUD
Retailer 9$626 AUD
Retailer 12$840 AUD
Retailer 3$1,106 AUD
Retailer 5$1,223 AUD
Retailer 6$1,226 AUD
Retailer 7$1,244 AUD
Retailer 8$1,310 AUD
Retailer 11$1,829 AUD
Retailer 13$1,938 AUD
Retailer 4$2,432 AUD
Retailer 2$2,688 AUD
Do Amore Diamonds$4,470 AUD

16 data points across 13 retailers

13 retailers$615 AUD to $2,688 AUD

A
Cheapest Retailer
-
$615 AUD
$432 USD
B+
Retailer 2
-
$626 AUD
$440 USD
View
B+
Retailer 3
-
$840 AUD
$590 USD
View
B+
Retailer 4
-
$1,106 AUD
$777 USD
View
B
Retailer 5
-
$1,223 AUD
$859 USD
View
B+
Retailer 6
-
$1,226 AUD
£678 GBP
View
B+
Retailer 7
-
$1,244 AUD
£688 GBP
View
B+
Retailer 8
-
$1,310 AUD
$920 USD
View
B
Retailer 9
-
$1,829 AUD
$1,285 USD
View
B
Retailer 10
-
$1,938 AUD
$1,361 USD
View
B
Retailer 11
-
$2,432 AUD
$1,708 USD
View
B
Retailer 12
-
$2,688 AUD
£1,487 GBP
View
Most Expensive
Do Amore Diamonds
27-2A1C5E56F · Oct 31
$4,470 AUD
$3,140 USD
View
Price under review
12 more retailers have this diamond
Prices start from $615 AUDSave up to $2,073 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
$615 AUD