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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 $456 SGD
$357 USD
As of November 1, 2026
Save $1,987 SGD (81%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $4,053 SGD at Do Amore Diamonds · As of October 31, 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

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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: Nov 1
Current: $4,053 SGD|Low: $456 SGD|High: $4,053 SGD|Avg: $1,322 SGD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
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Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
November 1, 2026
Retailer 20$456 SGD
Retailer 18$529 SGD
Retailer 3$564 SGD
Retailer 16$565 SGD
Retailer 5$566 SGD
Retailer 17$566 SGD
Retailer 7$761 SGD
Retailer 8$914 SGD
Retailer 19$993 SGD
Retailer 10$1,006 SGD
Retailer 14$1,014 SGD
Retailer 12$1,107 SGD
Retailer 13$1,113 SGD
Retailer 15$1,176 SGD
Retailer 6$1,661 SGD
Retailer 9$1,762 SGD
Retailer 4$2,010 SGD
Retailer 11$2,206 SGD
Retailer 2$2,443 SGD
Do Amore Diamonds$4,053 SGD

16 data points across 20 retailers

20 retailers$456 SGD to $2,443 SGD

A
Cheapest Retailer
-
$456 SGD
$357 USD
A
Retailer 2
-
$529 SGD
$414 USD
View
A
Retailer 3
-
$564 SGD
$441 USD
View
B+
Retailer 4
-
$565 SGD
$442 USD
View
Retailer 5
-
$566 SGD
$443 USD
View
Price last confirmed 7 days ago
A
Retailer 6
-
$566 SGD
$443 USD
View
B+
Retailer 7
-
$761 SGD
$595 USD
View
Retailer 8
-
$914 SGD
$715 USD
View
Price last confirmed 11 days ago
B+
Retailer 9
-
$993 SGD
$777 USD
View
B+
Retailer 10
-
$1,006 SGD
$787 USD
View
B+
Retailer 11
-
$1,014 SGD
£625 GBP
View
B+
Retailer 12
-
$1,107 SGD
$866 USD
View
B+
Retailer 13
-
$1,113 SGD
£686 GBP
View
B+
Retailer 14
-
$1,176 SGD
$920 USD
View
B
Retailer 15
-
$1,661 SGD
$1,299 USD
View
B
Retailer 16
-
$1,762 SGD
$1,378 USD
View
B
Retailer 17
-
$2,010 SGD
$1,572 USD
View
B
Retailer 18
-
$2,206 SGD
$1,725 USD
View
B
Retailer 19
-
$2,443 SGD
£1,505 GBP
View
Most Expensive
Do Amore Diamonds
27-DB2CAF216 · Oct 31
$4,053 SGD
$3,170 USD
View
Price under review
19 more retailers have this diamond
Prices start from $456 SGDSave up to $1,987 SGD

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
$456 SGD