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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 $768 NZD
$432 USD
As of November 1, 2026
Save $2,589 NZD (77%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $5,581 NZD at Do Amore Diamonds · As of November 2, 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 November 1, 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $5,581 NZD|Low: $768 NZD|High: $5,581 NZD|Avg: $2,099 NZD
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 2, 2026
Retailer 10$768 NZD
Retailer 9$782 NZD
Retailer 12$1,049 NZD
Retailer 3$1,381 NZD
Retailer 5$1,527 NZD
Retailer 2$1,530 NZD
Retailer 6$1,554 NZD
Retailer 7$1,671 NZD
Retailer 11$2,284 NZD
Retailer 13$2,419 NZD
Retailer 4$3,036 NZD
Retailer 8$3,356 NZD
Do Amore Diamonds$5,581 NZD

17 data points across 13 retailers

13 retailers$768 NZD to $3,356 NZD

A
Cheapest Retailer
-
$768 NZD
$432 USD
B+
Retailer 2
-
$782 NZD
$440 USD
View
B+
Retailer 3
-
$1,049 NZD
$590 USD
View
B+
Retailer 4
-
$1,381 NZD
$777 USD
View
B
Retailer 5
-
$1,527 NZD
$859 USD
View
B+
Retailer 6
-
$1,530 NZD
£678 GBP
View
B+
Retailer 7
-
$1,554 NZD
£688 GBP
View
B
Retailer 8
-
$1,671 NZD
$940 USD
View
B
Retailer 9
-
$2,284 NZD
$1,285 USD
View
B
Retailer 10
-
$2,419 NZD
$1,361 USD
View
B
Retailer 11
-
$3,036 NZD
$1,708 USD
View
B
Retailer 12
-
$3,356 NZD
£1,487 GBP
View
Most Expensive
Do Amore Diamonds
27-2A1C5E56F · Nov 2
$5,581 NZD
$3,140 USD
View
Price under review
12 more retailers have this diamond
Prices start from $768 NZDSave up to $2,589 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
1.62ct Round
$768 NZD