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Heart|Lab Grown|IGI

1.23ct D IF Heart Lab Grown Diamond

EX • D/IF • IGI LG821616173

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG821616173

Diamond specifications and retailer prices

From $440 SGD
As of November 4, 2026
Save $1,528 SGD (78%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,967 SGD at Reve Diamonds · As of November 4, 2026
View at Reve Diamonds

About this 1.23ct lab-grown heart diamond

This 1.23ct lab-grown heart sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG821616173 or 821616173. Listed at 19 retailers as of November 4, 2026, with prices from $440 to $1,967, a $1,528 spread on the same certified stone. Reve Diamonds lists it at $1,967. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821616173
Dimensions7.47 × 6.81 × 4.24 mm
L/W Ratio1.10
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
7.47 mm6.81 mm1.23 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821616173
Side View
Table 61.0%Crown 33.7°Girdle: MED-STKPavilion 39.3°Culet: NoneDepth 56.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: $860 SGD|Low: $378 SGD|High: $1,981 SGD|Avg: $1,001 SGD|+2.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 5, 2026
Retailer 16$394 SGD
Retailer 7$440 SGD
Retailer 3$488 SGD
Retailer 5$488 SGD
Retailer 15$658 SGD
Retailer 13$690 SGD
Retailer 12$792 SGD
Retailer 11$842 SGD
Retailer 1$860 SGD
Retailer 2$1,036 SGD
Retailer 10$1,200 SGD
Retailer 14$1,502 SGD
Retailer 6$1,567 SGD
Retailer 4$1,571 SGD
Retailer 8$1,629 SGD
Retailer 9$1,951 SGD

40 data points across 16 retailers

19 retailers$440 SGD to $1,967 SGD

Retailer 1
-
$394 SGD
Price last confirmed 13 days ago
A
Retailer 2
-
$440 SGD
View
Final sale: no returns
Retailer 3
-
$457 SGD
View
Price last confirmed 37 days ago
Retailer 4
-
$488 SGD
View
Price last confirmed 11 days ago
Retailer 5
-
$488 SGD
View
Price last confirmed 11 days ago
A
Retailer 6
-
$539 SGD
View
A
Retailer 7
-
$658 SGD
View
A
Retailer 8
-
$690 SGD
View
A
Retailer 9
-
$792 SGD
View
A
Retailer 10
-
$842 SGD
View
A
Retailer 11
-
$860 SGD
View
B+
Retailer 12
-
$1,036 SGD
View
B+
Retailer 13
-
$1,200 SGD
View
B
Retailer 14
-
$1,502 SGD
View
B
Retailer 15
-
$1,567 SGD
View
Retailer 16
-
$1,571 SGD
View
Price last confirmed 11 days ago
B
Retailer 17
-
$1,629 SGD
View
B
Retailer 18
-
$1,951 SGD
View
Most Expensive
B
Reve Diamonds
7DB8BD3DA · Nov 4
$1,967 SGD
$1,539 USD
View
18 more retailers have this diamond
Prices start from $440 SGDSave up to $1,528 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
$440 SGD