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Round|Lab Grown|IGI

1.63ct G SI1 Round Lab Grown Diamond

EX • G/SI1 • IGI LG12400612

Shape and cutting style on the report: Round brilliant

Certificate IGI LG12400612

Diamond specifications and retailer prices

From $454 SGD
$355 USD
As of October 26, 2026
Save $1,978 SGD (81%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $4,027 SGD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.63ct lab-grown round diamond

This 1.63ct 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 LG12400612 or 12400612. Listed at 20 retailers as of October 26, 2026, with a 436% 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

1.63
Carat
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG12400612
Dimensions7.49 × 7.53 × 4.70 mm
L/W Ratio1.01
Cert comments
As Grown - No indications of post-growth treatment. This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process.
Top View
7.49 mm7.53 mm1.63 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG12400612
Side View
Table 57.5%Crown 35.5°Girdle: MediumPavilion 41.5°Culet: NoneDepth 62.6%

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: Oct 26
Current: $4,027 SGD|Low: $454 SGD|High: $4,027 SGD|Avg: $1,295 SGD
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
October 28, 2026
Retailer 16$454 SGD
Retailer 14$527 SGD
Retailer 17$559 SGD
Retailer 12$564 SGD
Retailer 19$564 SGD
Retailer 10$633 SGD
Retailer 4$754 SGD
Retailer 5$914 SGD
Retailer 15$991 SGD
Retailer 8$999 SGD
Retailer 2$1,010 SGD
Retailer 11$1,103 SGD
Retailer 6$1,113 SGD
Retailer 3$1,652 SGD
Retailer 7$1,750 SGD
Retailer 18$1,998 SGD
Retailer 9$2,195 SGD
Retailer 13$2,432 SGD
Do Amore Diamonds$4,027 SGD

12 data points across 19 retailers

20 retailers$454 SGD to $2,432 SGD

A
Cheapest Retailer
-
$454 SGD
$355 USD
A
Retailer 2
-
$527 SGD
$412 USD
View
A
Retailer 3
-
$559 SGD
$437 USD
View
Retailer 4
-
$564 SGD
$441 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
$564 SGD
$441 USD
View
A
Retailer 6
-
$633 SGD
$495 USD
View
B+
Retailer 7
-
$754 SGD
$590 USD
View
Retailer 8
-
$914 SGD
$715 USD
View
Price last confirmed 11 days ago
B+
Retailer 9
-
$991 SGD
$775 USD
View
B+
Retailer 10
-
$999 SGD
$782 USD
View
B+
Retailer 11
-
$1,010 SGD
£622 GBP
View
B+
Retailer 12
-
$1,103 SGD
$863 USD
View
Retailer 13
-
$1,113 SGD
£686 GBP
View
Price last confirmed 14 days ago
B
Retailer 14
-
$1,652 SGD
$1,292 USD
View
B
Retailer 15
-
$1,750 SGD
$1,369 USD
View
B
Retailer 16
-
$1,879 SGD
$1,470 USD
View
B
Retailer 17
-
$1,998 SGD
$1,563 USD
View
B
Retailer 18
-
$2,195 SGD
$1,717 USD
View
B
Retailer 19
-
$2,432 SGD
£1,498 GBP
View
Most Expensive
Do Amore Diamonds
27-C9BBFF820 · Oct 29
$4,027 SGD
$3,150 USD
View
Price under review
19 more retailers have this diamond
Prices start from $454 SGDSave up to $1,978 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
1.63ct Round
$454 SGD