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Radiant|Lab Grown|IGI

1.55ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG743509309

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

Certificate IGI LG743509309

Diamond specifications and retailer prices

From $403 SGD
As of November 4, 2026
Save $3,329 SGD (89%) vs most expensive(unlock to see where)
31 retailers carry this diamond
Most expensive: $3,731 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 LG743509309 or 743509309. Listed at 31 retailers as of November 4, 2026, with prices from $403 to $3,731, a $3,329 spread on the same certified stone. Brilliant Earth lists it at $3,731. 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 angle42.5°
Pavilion angle32.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG743509309
Dimensions8.16 × 5.85 × 3.74 mm
L/W Ratio1.39
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
8.16 mm5.85 mm1.55 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG743509309
Side View
Table 65.0%Crown 42.5°Girdle: MED-STKPavilion 32.7°Culet: NoneDepth 63.9%

Caratlytics Score

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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 4
Current: $3,731 SGD|Low: $403 SGD|High: $5,342 SGD|Avg: $1,535 SGD|-30.1%
Brilliant Earth
Retailer 2
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Retailer 22
November 5, 2026
Retailer 19$403 SGD
Retailer 20$451 SGD
Retailer 18$572 SGD
Retailer 17$696 SGD
Retailer 22$703 SGD
Retailer 7$813 SGD
Retailer 15$850 SGD
Retailer 13$880 SGD
Retailer 12$896 SGD
Retailer 10$1,123 SGD
Retailer 6$1,172 SGD
Retailer 2$1,357 SGD
Retailer 3$1,464 SGD
Retailer 21$1,605 SGD
Retailer 8$1,660 SGD
Retailer 11$1,663 SGD
Retailer 5$1,671 SGD
Retailer 9$1,919 SGD
Retailer 4$1,994 SGD
Retailer 16$1,994 SGD
Retailer 14$3,291 SGD
Brilliant Earth$3,731 SGD

34 data points across 22 retailers

31 retailers$403 SGD to $3,731 SGD

A
Cheapest Retailer
-
$403 SGD
Retailer 2
-
$419 SGD
View
Price last confirmed 28 days ago
Retailer 3
-
$446 SGD
View
Price last confirmed 36 days ago
A
Retailer 4
-
$451 SGD
View
Final sale: no returns
Retailer 5
-
$518 SGD
View
Price last confirmed 39 days ago
Retailer 6
-
$520 SGD
View
Price last confirmed 33 days ago
Retailer 7
-
$546 SGD
View
Price last confirmed 39 days ago
Retailer 8
-
$546 SGD
View
Price last confirmed 36 days ago
A
Retailer 9
-
$572 SGD
View
A
Retailer 10
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$696 SGD
View
A
Retailer 11
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$703 SGD
View
A
Retailer 12
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$813 SGD
View
A
Retailer 13
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$850 SGD
View
A
Retailer 14
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$880 SGD
View
A
Retailer 15
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$896 SGD
View
A
Retailer 16
-
$1,123 SGD
View
A
Retailer 17
-
$1,172 SGD
View
B+
Retailer 18
-
$1,357 SGD
View
B+
Retailer 19
-
$1,464 SGD
View
B+
Retailer 20
-
$1,605 SGD
View
B+
Retailer 21
-
$1,660 SGD
View
B+
Retailer 22
-
$1,663 SGD
View
Retailer 23
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$1,671 SGD
View
Price last confirmed 26 days ago
B+
Retailer 24
-
$1,671 SGD
View
Retailer 25
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$1,778 SGD
View
Price last confirmed 36 days ago
B+
Retailer 26
-
$1,919 SGD
View
B+
Retailer 27
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$1,994 SGD
View
B+
Retailer 28
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$1,994 SGD
View
Retailer 29
-
$2,156 SGD
View
Price last confirmed 34 days ago
Retailer 30
-
$3,291 SGD
View
Price last confirmed 8 days ago
Most Expensive
B
Brilliant Earth
16656137A · Nov 4
$3,731 SGD
$2,920 USD
View
30 more retailers have this diamond
Prices start from $403 SGDSave up to $3,329 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
$403 SGD