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Heart|Lab Grown|IGI

1.15ct E SI1 Heart Lab Grown Diamond

EX • E/SI1 • IGI LG839668121

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG839668121

Diamond specifications and retailer prices

From $219 SGD
As of November 6, 2026
Save $780 SGD (78%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $1,000 SGD at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

About this 1.15ct lab-grown heart diamond

This 1.15ct lab-grown heart sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG839668121 or 839668121. Listed at 3 retailers as of November 6, 2026, with prices from $219 to $1,000, a $780 spread on the same certified stone. Brilliant Earth lists it at $1,000. 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

1.15
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839668121
Dimensions6.17 × 7.22 × 4.38 mm
L/W Ratio1.17
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.17 mm7.22 mm1.15 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839668121
Side View
Table 56.0%Crown 36.1°Girdle: MED-STKPavilion 40°Culet: NoneDepth 60.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: $1,000 SGD|Low: $219 SGD|High: $1,307 SGD|Avg: $688 SGD|-23.5%
Brilliant Earth
Retailer 2
Retailer 3
November 6, 2026
Retailer 3$219 SGD
Retailer 2$434 SGD
Brilliant Earth$1,000 SGD

34 data points across 3 retailers

3 retailers$219 SGD to $1,000 SGD

A
Cheapest Retailer
-
$219 SGD
Final sale: no returns
B+
Retailer 2
-
$434 SGD
View
Most Expensive
B
Brilliant Earth
21601484A · Nov 6
$1,000 SGD
$780 USD
View
2 more retailers have this diamond
Prices start from $219 SGDSave up to $780 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
1.15ct Heart
$219 SGD