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Heart|Lab Grown|IGI

1.23ct E VVS1 Heart Lab Grown Diamond

ID • E/VVS1 • IGI LG830620399

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG830620399

Diamond specifications and retailer prices

From $302 SGD
$236 USD
As of October 30, 2026
Save $1,069 SGD (78%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,371 SGD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.23ct lab-grown heart diamond

This 1.23ct lab-grown heart sits in the classic one-carat band, graded E colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG830620399 or 830620399. Listed at 13 retailers as of October 28, 2026, with prices from $302 to $1,371, a $1,069 spread on the same certified stone. Brilliant Earth lists it at $1,371. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
E
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.3°
Pavilion angle38.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830620399
Dimensions6.79 × 7.35 × 4.19 mm
L/W Ratio1.08
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.79 mm7.35 mm1.23 ctE / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830620399
Side View
Table 62.0%Crown 38.3°Girdle: MED-THKPavilion 38.2°Culet: NoneDepth 57.0%

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: Oct 30
Current: $411 SGD|Low: $302 SGD|High: $1,348 SGD|Avg: $776 SGD|-0.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 12$302 SGD
Retailer 1$411 SGD
Retailer 6$565 SGD
Retailer 8$574 SGD
Retailer 9$575 SGD
Retailer 5$618 SGD
Retailer 10$736 SGD
Retailer 11$817 SGD
Retailer 2$1,088 SGD
Retailer 3$1,141 SGD
Retailer 4$1,143 SGD
Retailer 7$1,348 SGD

5 data points across 12 retailers

13 retailers$302 SGD to $1,371 SGD

A
Cheapest Retailer
-
$302 SGD
$236 USD
Final sale: no returns
A
Retailer 2
-
$411 SGD
£252 GBP
View
A
Retailer 3
-
$565 SGD
€420 EUR
View
A
Retailer 4
-
$574 SGD
$448 USD
View
A
Retailer 5
-
$575 SGD
ZAR 7,243 ZAR
View
A
Retailer 6
-
$618 SGD
£380 GBP
View
B+
Retailer 7
-
$736 SGD
$574 USD
View
B+
Retailer 8
-
$817 SGD
A$981 AUD
View
B
Retailer 9
-
$1,088 SGD
View
B
Retailer 10
-
$1,141 SGD
$890 USD
View
B
Retailer 11
-
$1,143 SGD
$892 USD
View
B
Retailer 12
-
$1,348 SGD
£828 GBP
View
Most Expensive
B
Brilliant Earth
22311013A · Oct 28
$1,371 SGD
$1,070 USD
View
12 more retailers have this diamond
Prices start from $302 SGDSave up to $1,069 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
1.23ct Heart
$302 SGD