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Round|Lab Grown|IGI

1.64ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG520293686

Shape and cutting style on the report: Round brilliant

Certificate IGI LG520293686

Diamond specifications and retailer prices

From $634 NZD
$357 USD
As of November 1, 2026
Save $2,763 NZD (81%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $5,634 NZD at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

About this 1.64ct lab-grown round diamond

This 1.64ct 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 LG520293686 or 520293686. Listed at 20 retailers as of November 1, 2026, with a 435% 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

1.64
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG520293686
Dimensions7.56 × 7.59 × 4.69 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.56 mm7.59 mm1.64 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG520293686
Side View
Table 57.5%Crown 35.5°Girdle: MediumPavilion 41.1°Culet: NoneDepth 62.0%

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: $5,634 NZD|Low: $634 NZD|High: $5,634 NZD|Avg: $1,833 NZD
Do Amore Diamonds
Retailer 2
Retailer 3
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Retailer 12
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Retailer 19
Retailer 20
November 2, 2026
Retailer 20$634 NZD
Retailer 18$736 NZD
Retailer 3$784 NZD
Retailer 16$786 NZD
Retailer 5$787 NZD
Retailer 17$787 NZD
Retailer 7$1,057 NZD
Retailer 8$1,271 NZD
Retailer 19$1,381 NZD
Retailer 10$1,398 NZD
Retailer 13$1,422 NZD
Retailer 12$1,539 NZD
Retailer 2$1,548 NZD
Retailer 14$1,671 NZD
Retailer 6$2,309 NZD
Retailer 9$2,449 NZD
Retailer 4$2,794 NZD
Retailer 11$3,067 NZD
Retailer 15$3,397 NZD
Do Amore Diamonds$5,634 NZD

17 data points across 20 retailers

20 retailers$634 NZD to $3,397 NZD

A
Cheapest Retailer
-
$634 NZD
$357 USD
A
Retailer 2
-
$736 NZD
$414 USD
View
A
Retailer 3
-
$784 NZD
$441 USD
View
B+
Retailer 4
-
$786 NZD
$442 USD
View
Retailer 5
-
$787 NZD
$443 USD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$787 NZD
$443 USD
View
B+
Retailer 7
-
$1,057 NZD
$595 USD
View
Retailer 8
-
$1,271 NZD
$715 USD
View
Price last confirmed 12 days ago
B+
Retailer 9
-
$1,381 NZD
$777 USD
View
B+
Retailer 10
-
$1,398 NZD
$787 USD
View
B+
Retailer 11
-
$1,422 NZD
£630 GBP
View
B+
Retailer 12
-
$1,539 NZD
$866 USD
View
B+
Retailer 13
-
$1,548 NZD
£686 GBP
View
B+
Retailer 14
-
$1,671 NZD
$940 USD
View
B
Retailer 15
-
$2,309 NZD
$1,299 USD
View
B
Retailer 16
-
$2,449 NZD
$1,378 USD
View
B
Retailer 17
-
$2,794 NZD
$1,572 USD
View
B
Retailer 18
-
$3,067 NZD
$1,725 USD
View
B
Retailer 19
-
$3,397 NZD
£1,505 GBP
View
Most Expensive
Do Amore Diamonds
27-DB2CAF216 · Nov 2
$5,634 NZD
$3,170 USD
View
Price under review
19 more retailers have this diamond
Prices start from $634 NZDSave up to $2,763 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
1.64ct Round
$634 NZD