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Radiant|Lab Grown|IGI

1.55ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG728538606

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG728538606

Diamond specifications and retailer prices

From $364 SGD
As of November 4, 2026
Save $3,354 SGD (90%) vs most expensive(unlock to see where)
30 retailers carry this diamond
Most expensive: $3,719 SGD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.55ct lab-grown radiant diamond

This 1.55ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG728538606 or 728538606. Listed at 30 retailers as of November 4, 2026, with prices from $364 to $3,719, a $3,354 spread on the same certified stone. Brilliant Earth lists it at $3,719. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.4°
Pavilion angle34.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG728538606
Dimensions8.14 × 5.88 × 3.88 mm
L/W Ratio1.38
Culet sizePointed
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
8.14 mm5.88 mm1.55 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG728538606
Side View
Table 64.0%Crown 39.4°Girdle: MediumPavilion 34.6°Culet: NoneDepth 66.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: $3,719 SGD|Low: $364 SGD|High: $4,281 SGD|Avg: $1,556 SGD|-13.1%
Brilliant Earth
Retailer 2
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Retailer 23
November 5, 2026
Retailer 22$364 SGD
Retailer 13$408 SGD
Retailer 20$652 SGD
Retailer 21$670 SGD
Retailer 3$703 SGD
Retailer 16$805 SGD
Retailer 8$813 SGD
Retailer 18$880 SGD
Retailer 12$896 SGD
Retailer 2$1,054 SGD
Retailer 10$1,123 SGD
Retailer 7$1,172 SGD
Retailer 4$1,389 SGD
Retailer 23$1,605 SGD
Retailer 9$1,738 SGD
Retailer 11$1,812 SGD
Retailer 5$1,868 SGD
Retailer 6$1,931 SGD
Retailer 19$1,994 SGD
Retailer 15$2,165 SGD
Retailer 14$3,137 SGD
Retailer 17$3,233 SGD
Brilliant Earth$3,719 SGD

35 data points across 23 retailers

30 retailers$364 SGD to $3,719 SGD

A
Cheapest Retailer
-
$364 SGD
Retailer 2
-
$380 SGD
View
Price last confirmed 28 days ago
Retailer 3
-
$404 SGD
View
Price last confirmed 36 days ago
A
Retailer 4
-
$408 SGD
View
Final sale: no returns
Retailer 5
-
$469 SGD
View
Price last confirmed 39 days ago
Retailer 6
-
$472 SGD
View
Price last confirmed 33 days ago
Retailer 7
-
$495 SGD
View
Price last confirmed 37 days ago
A
Retailer 8
-
$652 SGD
View
A
Retailer 9
-
$670 SGD
View
A
Retailer 10
-
$703 SGD
View
A
Retailer 11
-
$805 SGD
View
A
Retailer 12
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$813 SGD
View
A
Retailer 13
-
$880 SGD
View
A
Retailer 14
-
$896 SGD
View
A
Retailer 15
-
$1,054 SGD
View
A
Retailer 16
-
$1,123 SGD
View
A
Retailer 17
-
$1,172 SGD
View
B+
Retailer 18
-
$1,389 SGD
View
B+
Retailer 19
-
$1,605 SGD
View
Retailer 20
-
$1,671 SGD
View
Price last confirmed 26 days ago
B+
Retailer 21
-
$1,738 SGD
View
Retailer 22
-
$1,778 SGD
View
Price last confirmed 36 days ago
B+
Retailer 23
-
$1,812 SGD
View
B+
Retailer 24
-
$1,868 SGD
View
B+
Retailer 25
-
$1,931 SGD
View
B+
Retailer 26
-
$1,994 SGD
View
Retailer 27
-
$2,165 SGD
View
Price last confirmed 31 days ago
Retailer 28
-
$3,137 SGD
View
Price last confirmed 8 days ago
B
Retailer 29
-
$3,233 SGD
View
Most Expensive
B
Brilliant Earth
16223266Y · Nov 4
$3,719 SGD
$2,910 USD
View
29 more retailers have this diamond
Prices start from $364 SGDSave up to $3,354 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
1.55ct Radiant
$364 SGD