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1.64ct F SI1 Round Lab Grown Diamond

EX • F/SI1 • IGI LG625480546

Shape and cutting style on the report: Round brilliant

Certificate IGI LG625480546

Diamond specifications and retailer prices

From $412 NZD
$232 USD
As of November 3, 2026
Save $3,124 NZD (88%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $3,537 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG625480546 or 625480546. Listed at 13 retailers as of November 2, 2026, with prices from $412 to $3,537, a $3,124 spread on the same certified stone. Do Amore Diamonds lists it at $3,537. 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
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG625480546
Dimensions7.49 × 7.46 × 4.72 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
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
7.49 mm7.46 mm1.64 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG625480546
Side View
Table 58.0%Crown 36.1°Girdle: MediumPavilion 41.3°Culet: NoneDepth 63.1%

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 3
Current: $3,537 NZD|Low: $336 NZD|High: $3,537 NZD|Avg: $1,326 NZD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 3, 2026
Retailer 7$412 NZD
Retailer 9$677 NZD
Retailer 6$789 NZD
Retailer 8$921 NZD
Retailer 2$930 NZD
Retailer 5$1,297 NZD
Retailer 4$1,472 NZD
Retailer 3$2,018 NZD
Do Amore Diamonds$3,537 NZD

40 data points across 9 retailers

13 retailers$412 NZD to $3,537 NZD

A
Cheapest Retailer
-
$412 NZD
$232 USD
Final sale: no returns
Retailer 2
-
$457 NZD
$257 USD
View
Price last confirmed 31 days ago
A
Retailer 3
-
$457 NZD
$257 USD
View
A
Retailer 4
-
$677 NZD
$381 USD
View
B+
Retailer 5
-
$789 NZD
$444 USD
View
B+
Retailer 6
-
$921 NZD
$518 USD
View
A
Retailer 7
-
$930 NZD
£412 GBP
View
Retailer 8
-
$1,297 NZD
$730 USD
View
Price last confirmed 12 days ago
B+
Retailer 9
-
$1,472 NZD
$828 USD
View
Retailer 10
-
$1,619 NZD
$911 USD
View
Price last confirmed 26 days ago
B
Retailer 11
-
$1,619 NZD
$911 USD
View
B
Retailer 12
-
$2,018 NZD
£894 GBP
View
Most Expensive
B
Do Amore Diamonds
27-F85E13E20 · Nov 2
$3,537 NZD
$1,990 USD
View
12 more retailers have this diamond
Prices start from $412 NZDSave up to $3,124 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
$412 NZD