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Round|Lab Grown|IGI

1.58ct H SI1 Round Lab Grown Diamond

EX • H/SI1 • IGI LG12378004

Shape and cutting style on the report: Round brilliant

Certificate IGI LG12378004

Diamond specifications and retailer prices

From $436 SGD
$341 USD
As of October 29, 2026
Save $3,438 SGD (89%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $3,874 SGD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.58ct lab-grown round diamond

This 1.58ct lab-grown round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG12378004 or 12378004. Listed at 18 retailers as of October 29, 2026, with prices from $436 to $3,874, a $3,438 spread on the same certified stone. Do Amore Diamonds lists it at $3,874. 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

1.58
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG12378004
Dimensions7.42 × 7.47 × 4.64 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
7.42 mm7.47 mm1.58 ctH / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG12378004
Side View
Table 59.0%Crown 35.5°Girdle: MED-UNDPavilion 41.4°Culet: NoneDepth 62.2%

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 29
Current: $3,874 SGD|Low: $436 SGD|High: $3,874 SGD|Avg: $1,248 SGD
Do Amore Diamonds
Retailer 2
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Retailer 12
Retailer 13
Retailer 14
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Retailer 18
November 1, 2026
Retailer 17$436 SGD
Retailer 14$506 SGD
Retailer 12$534 SGD
Retailer 5$541 SGD
Retailer 13$541 SGD
Retailer 18$647 SGD
Retailer 6$735 SGD
Retailer 7$863 SGD
Retailer 9$933 SGD
Retailer 11$964 SGD
Retailer 15$968 SGD
Retailer 10$1,060 SGD
Retailer 16$1,586 SGD
Retailer 8$1,633 SGD
Retailer 4$1,919 SGD
Retailer 3$2,118 SGD
Retailer 2$2,333 SGD
Do Amore Diamonds$3,874 SGD

15 data points across 18 retailers

18 retailers$436 SGD to $3,874 SGD

A
Cheapest Retailer
-
$436 SGD
$341 USD
A
Retailer 2
-
$506 SGD
$396 USD
View
B+
Retailer 3
-
$534 SGD
$418 USD
View
A
Retailer 4
-
$541 SGD
$423 USD
View
A
Retailer 5
-
$541 SGD
$423 USD
View
A
Retailer 6
-
$647 SGD
$506 USD
View
A
Retailer 7
-
$735 SGD
$575 USD
View
Retailer 8
-
$863 SGD
$675 USD
View
Price last confirmed 10 days ago
A
Retailer 9
-
$933 SGD
$730 USD
View
A
Retailer 10
-
$964 SGD
£593 GBP
View
A
Retailer 11
-
$968 SGD
$757 USD
View
A
Retailer 12
-
$1,060 SGD
$829 USD
View
A
Retailer 13
-
$1,586 SGD
$1,241 USD
View
A
Retailer 14
-
$1,633 SGD
$1,277 USD
View
B+
Retailer 15
-
$1,919 SGD
$1,501 USD
View
B+
Retailer 16
-
$2,118 SGD
$1,657 USD
View
B+
Retailer 17
-
$2,333 SGD
£1,437 GBP
View
Most Expensive
B
Do Amore Diamonds
27-9CA57A5A7 · Oct 31
$3,874 SGD
$3,030 USD
View
17 more retailers have this diamond
Prices start from $436 SGDSave up to $3,438 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
1.58ct Round
$436 SGD