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Radiant|Lab Grown|IGI

1.57ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG665445078

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

Certificate IGI LG665445078

Diamond specifications and retailer prices

From $369 SGD
$289 USD
As of October 30, 2026
Save $3,721 SGD (91%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: $4,091 SGD at Diamond Quarter · As of October 31, 2026
View at Diamond Quarter

About this 1.57ct lab-grown radiant diamond

This 1.57ct 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 LG665445078 or 665445078. Listed at 26 retailers as of October 30, 2026, with prices from $369 to $4,091, a $3,721 spread on the same certified stone. Diamond Quarter lists it at $4,091. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.57
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.1°
Pavilion angle33.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG665445078
Dimensions8.55 × 5.71 × 3.73 mm
L/W Ratio1.50
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
8.55 mm5.71 mm1.57 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG665445078
Side View
Table 62.0%Crown 44.1°Girdle: MediumPavilion 33.3°Culet: NoneDepth 65.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $821 SGD|Low: $354 SGD|High: $4,334 SGD|Avg: $1,477 SGD|-2.9%
Retailer 1
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Retailer 25
October 31, 2026
Retailer 3$369 SGD
Retailer 24$428 SGD
Retailer 5$440 SGD
Retailer 2$458 SGD
Retailer 7$652 SGD
Retailer 16$671 SGD
Retailer 8$713 SGD
Retailer 14$794 SGD
Retailer 1$821 SGD
Retailer 23$868 SGD
Retailer 12$902 SGD
Retailer 9$1,080 SGD
Retailer 15$1,139 SGD
Retailer 22$1,177 SGD
Retailer 6$1,406 SGD
Retailer 4$1,625 SGD
Retailer 11$1,760 SGD
Retailer 17$1,832 SGD
Retailer 10$1,883 SGD
Retailer 18$1,955 SGD
Retailer 21$2,036 SGD
Retailer 19$2,148 SGD
Retailer 13$3,273 SGD
Retailer 25$3,285 SGD
Retailer 20$3,758 SGD

34 data points across 25 retailers

26 retailers$369 SGD to $4,091 SGD

A
Cheapest Retailer
-
$369 SGD
$289 USD
A
Retailer 2
-
$428 SGD
$335 USD
View
A
Retailer 3
-
$440 SGD
$344 USD
View
Final sale: no returns
A
Retailer 4
-
$458 SGD
$358 USD
View
A
Retailer 5
-
$652 SGD
$510 USD
View
A
Retailer 6
-
$671 SGD
HK$4,100 HKD
View
A
Retailer 7
-
$713 SGD
$558 USD
View
A
Retailer 8
-
$794 SGD
$621 USD
View
A
Retailer 9
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$821 SGD
€612 EUR
View
A
Retailer 10
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$868 SGD
ZAR 10,972 ZAR
View
A
Retailer 11
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$902 SGD
£555 GBP
View
A
Retailer 12
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$1,080 SGD
$845 USD
View
A
Retailer 13
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$1,139 SGD
$891 USD
View
A
Retailer 14
-
$1,177 SGD
A$1,417 AUD
View
B+
Retailer 15
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$1,406 SGD
$1,100 USD
View
B+
Retailer 16
-
$1,625 SGD
$1,271 USD
View
B+
Retailer 17
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$1,760 SGD
$1,377 USD
View
B+
Retailer 18
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$1,832 SGD
$1,433 USD
View
B+
Retailer 19
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$1,883 SGD
$1,473 USD
View
B+
Retailer 20
-
$1,955 SGD
View
B+
Retailer 21
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$2,036 SGD
£1,254 GBP
View
B+
Retailer 22
-
$2,148 SGD
A$2,585 AUD
View
B
Retailer 23
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$3,273 SGD
$2,560 USD
View
B
Retailer 24
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$3,285 SGD
$2,570 USD
View
B
Retailer 25
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$3,758 SGD
$2,940 USD
View
Most Expensive
B
Diamond Quarter
1.57IFDLG784962N · Oct 31
$4,091 SGD
£2,520 GBP
View
25 more retailers have this diamond
Prices start from $369 SGDSave up to $3,721 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
1.57ct Radiant
$369 SGD