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Radiant|Lab Grown|IGI

1.57ct D SI1 Radiant Lab Grown Diamond

GD • D/SI1 • IGI LG497145476

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

Certificate IGI LG497145476

Diamond specifications and retailer prices

From $202 SGD
$158 USD
As of October 30, 2026
Save $1,096 SGD (84%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,298 SGD at Rare Carat · As of October 28, 2026
View at Rare Carat

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 SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG497145476 or 497145476. Listed at 15 retailers as of October 28, 2026, with prices from $202 to $1,298, a $1,096 spread on the same certified stone. Rare Carat lists it at $1,298. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.57
Carat
D
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.4°
Pavilion angle29.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG497145476
Dimensions7.72 × 5.68 × 3.86 mm
L/W Ratio1.36
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
7.72 mm5.68 mm1.57 ctD / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG497145476
Side View
Table 64.0%Crown 40.4°Girdle: Slightly ThickPavilion 29.4°Culet: NoneDepth 68.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $1,298 SGD|Low: $194 SGD|High: $1,483 SGD|Avg: $616 SGD|-12.5%
Rare Carat
Retailer 2
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Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
October 31, 2026
Retailer 14$202 SGD
Retailer 12$235 SGD
Retailer 13$251 SGD
Retailer 16$251 SGD
Retailer 6$277 SGD
Retailer 2$438 SGD
Retailer 10$454 SGD
Retailer 3$456 SGD
Retailer 5$652 SGD
Retailer 4$685 SGD
Retailer 8$802 SGD
Retailer 15$807 SGD
Retailer 11$853 SGD
Retailer 7$878 SGD
Retailer 9$1,180 SGD
Rare Carat$1,298 SGD

43 data points across 16 retailers

15 retailers$202 SGD to $1,298 SGD

A
Cheapest Retailer
-
$202 SGD
$158 USD
B+
Retailer 2
-
$235 SGD
$184 USD
View
B+
Retailer 3
-
$251 SGD
$196 USD
View
A
Retailer 4
-
$251 SGD
$196 USD
View
B+
Retailer 5
-
$438 SGD
£270 GBP
View
B+
Retailer 6
-
$454 SGD
£279 GBP
View
B
Retailer 7
-
$456 SGD
$357 USD
View
B+
Retailer 8
-
$652 SGD
$510 USD
View
B+
Retailer 9
-
$685 SGD
$536 USD
View
B
Retailer 10
-
$802 SGD
HK$4,900 HKD
View
B+
Retailer 11
-
$807 SGD
$631 USD
View
B
Retailer 12
-
$853 SGD
$667 USD
View
B
Retailer 13
-
$878 SGD
$686 USD
View
B
Retailer 14
-
$1,180 SGD
£727 GBP
View
Most Expensive
B
Rare Carat
497145476_l_497145476 · Oct 28
$1,298 SGD
$1,015 USD
View
14 more retailers have this diamond
Prices start from $202 SGDSave up to $1,096 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
$202 SGD