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Heart|Lab Grown|IGI

1.03ct I SI1 Heart Lab Grown Diamond

ID • I/SI1 • IGI LG436045977

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG436045977

Diamond specifications and retailer prices

From $795 SGD
As of November 6, 2026
Save $4,363 SGD (85%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $5,158 SGD at MOH London · As of November 3, 2026
View at MOH London

About this 1.03ct lab-grown heart diamond

This 1.03ct lab-grown heart sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG436045977 or 436045977. Listed at 10 retailers as of November 3, 2026, with prices from $795 to $5,158, a $4,363 spread on the same certified stone. MOH London lists it at $5,158. 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

1.03
Carat
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle37.6°
Pavilion angle42.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436045977
Dimensions5.90 × 7.28 × 4.12 mm
L/W Ratio1.23
Girdle conditionFaceted
Culet sizePointed
Top View
5.90 mm7.28 mm1.03 ctI / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG436045977
Side View
Table 57.5%Crown 37.6°Girdle: THN-THKPavilion 42.6°Culet: NoneDepth 56.6%

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 6
Current: $5,158 SGD|Low: $795 SGD|High: $5,226 SGD|Avg: $2,377 SGD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 2$795 SGD
Retailer 3$1,311 SGD
Retailer 4$1,521 SGD
Retailer 6$1,743 SGD
Retailer 8$2,181 SGD
Retailer 5$2,426 SGD
Retailer 7$3,178 SGD
MOH London$5,158 SGD

13 data points across 8 retailers

10 retailers$795 SGD to $5,158 SGD

A
Cheapest Retailer
-
$795 SGD
B+
Retailer 2
-
$1,311 SGD
View
B+
Retailer 3
-
$1,426 SGD
View
B+
Retailer 4
-
$1,521 SGD
View
Retailer 5
-
$1,521 SGD
View
Price last confirmed 25 days ago
B+
Retailer 6
-
$1,743 SGD
View
B
Retailer 7
-
$2,426 SGD
View
B
Retailer 8
-
$2,850 SGD
View
B
Retailer 9
-
$3,178 SGD
View
Most Expensive
B
MOH London
LG436045977 · Nov 3
$5,158 SGD
£3,169 GBP
View
9 more retailers have this diamond
Prices start from $795 SGDSave up to $4,363 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
1.03ct Heart
$795 SGD