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Round|Lab Grown|IGI

1.58ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG825658780

Shape and cutting style on the report: Round brilliant

Certificate IGI LG825658780

Diamond specifications and retailer prices

From $256 SGD
$200 USD
As of November 1, 2026
Save $1,233 SGD (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,489 SGD at MOH London · As of October 29, 2026
View at MOH London

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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG825658780 or 825658780. Listed at 14 retailers as of October 29, 2026, with prices from $256 to $1,489, a $1,233 spread on the same certified stone. MOH London lists it at $1,489. 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
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825658780
Dimensions7.53 × 7.47 × 4.58 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.53 mm7.47 mm1.58 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825658780
Side View
Table 57.0%Crown 35.2°Girdle: THN-MEDPavilion 40.5°Culet: NoneDepth 61.1%

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: $1,489 SGD|Low: $256 SGD|High: $1,499 SGD|Avg: $784 SGD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 7$256 SGD
Retailer 9$317 SGD
Retailer 4$529 SGD
Retailer 10$551 SGD
Retailer 2$574 SGD
Retailer 11$628 SGD
Retailer 6$818 SGD
Retailer 5$914 SGD
Retailer 3$1,086 SGD
Retailer 8$1,151 SGD
MOH London$1,489 SGD

43 data points across 11 retailers

14 retailers$256 SGD to $1,489 SGD

A
Cheapest Retailer
-
$256 SGD
$200 USD
A
Retailer 2
-
$297 SGD
$232 USD
View
Retailer 3
-
$317 SGD
$248 USD
View
Price last confirmed 7 days ago
A
Retailer 4
-
$317 SGD
$248 USD
View
A
Retailer 5
-
$529 SGD
€394 EUR
View
B+
Retailer 6
-
$551 SGD
$431 USD
View
A
Retailer 7
-
$574 SGD
£354 GBP
View
A
Retailer 8
-
$628 SGD
$491 USD
View
B+
Retailer 9
-
$818 SGD
$640 USD
View
B+
Retailer 10
-
$914 SGD
$715 USD
View
B+
Retailer 11
-
$1,018 SGD
$796 USD
View
B
Retailer 12
-
$1,086 SGD
$850 USD
View
B
Retailer 13
-
$1,151 SGD
$900 USD
View
Most Expensive
B
MOH London
LG825658780 · Oct 29
$1,489 SGD
£917 GBP
View
13 more retailers have this diamond
Prices start from $256 SGDSave up to $1,233 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
$256 SGD