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Radiant|Lab Grown|IGI

1.56ct D SI1 Radiant Lab Grown Diamond

GD • D/SI1 • IGI LG496117891

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

Certificate IGI LG496117891

Diamond specifications and retailer prices

From $202 SGD
$158 USD
As of October 30, 2026
Save $967 SGD (83%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,487 SGD at Rare Carat · As of September 6, 2026
View at Rare Carat

About this 1.56ct lab-grown radiant diamond

This 1.56ct 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 LG496117891 or 496117891. Listed at 15 retailers as of October 26, 2026, with a 479% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.56
Carat
D
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.8°
Pavilion angle26.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG496117891
Dimensions7.88 × 5.75 × 3.63 mm
L/W Ratio1.37
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
7.88 mm5.75 mm1.56 ctD / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG496117891
Side View
Table 63.5%Crown 39.8°Girdle: STK-THKPavilion 26.7°Culet: NoneDepth 63.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $1,487 SGD|Low: $193 SGD|High: $1,487 SGD|Avg: $626 SGD
Rare Carat
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
October 31, 2026
Retailer 14$202 SGD
Retailer 12$234 SGD
Retailer 13$249 SGD
Retailer 16$249 SGD
Retailer 6$275 SGD
Retailer 2$435 SGD
Retailer 9$451 SGD
Retailer 3$454 SGD
Retailer 5$646 SGD
Retailer 4$684 SGD
Retailer 8$802 SGD
Retailer 15$803 SGD
Retailer 11$848 SGD
Retailer 7$873 SGD
Retailer 10$1,169 SGD
Rare Carat$1,487 SGD

42 data points across 16 retailers

15 retailers$202 SGD to $1,169 SGD

A
Cheapest Retailer
-
$202 SGD
$158 USD
B+
Retailer 2
-
$234 SGD
$183 USD
View
B+
Retailer 3
-
$249 SGD
$195 USD
View
A
Retailer 4
-
$249 SGD
$195 USD
View
B+
Retailer 5
-
$435 SGD
£268 GBP
View
B+
Retailer 6
-
$451 SGD
£278 GBP
View
B
Retailer 7
-
$454 SGD
$355 USD
View
B+
Retailer 8
-
$646 SGD
$505 USD
View
B+
Retailer 9
-
$684 SGD
$535 USD
View
B
Retailer 10
-
$802 SGD
HK$4,900 HKD
View
B+
Retailer 11
-
$803 SGD
$628 USD
View
B
Retailer 12
-
$848 SGD
$663 USD
View
B
Retailer 13
-
$873 SGD
$683 USD
View
B
Retailer 14
-
$1,169 SGD
£720 GBP
View
Most Expensive
Rare Carat
KCV0711 · Sep 6
$1,487 SGD
$1,163 USD
View
Price last confirmed 55 days ago
14 more retailers have this diamond
Prices start from $202 SGDSave up to $967 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
1.56ct Radiant
$202 SGD