Radiant|Lab Grown|IGI

1.53ct D SI1 Radiant Lab Grown Diamond

GD • D/SI1 • IGI LG496117921

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

Certificate IGI LG496117921

Diamond specifications and retailer prices

From $155 USD
As of October 27, 2026
Save $860 USD (85%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,015 USD at Rare Carat · As of October 28, 2026
View at Rare Carat

About this 1.53ct lab-grown radiant diamond

This 1.53ct 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 LG496117921 or 496117921. Listed at 15 retailers as of October 27, 2026, with prices from $155 to $1,015, a $860 spread on the same certified stone. Rare Carat lists it at $1,015. 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

1.53
Carat
D
Color
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40°
Pavilion angle29°
OriginLab Grown
Grading LabIGI
CertificateIGI LG496117921
Dimensions7.64 × 5.62 × 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
7.64 mm5.62 mm1.53 ctD / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG496117921
Side View
Table 62.5%Crown 40°Girdle: MED-STKPavilion 29°Culet: NoneDepth 68.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 27
Current: $1,015 USD|Low: $149 USD|High: $1,150 USD|Avg: $483 USD|-11.7%
Rare Carat
Retailer 2
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October 28, 2026
Retailer 15$155 USD
Retailer 13$180 USD
Retailer 14$192 USD
Retailer 17$192 USD
Retailer 7$212 USD
Retailer 10$335 USD
Retailer 2$347 USD
Retailer 3$351 USD
Retailer 6$487 USD
Retailer 5$531 USD
Retailer 9$614 USD
Retailer 16$618 USD
Retailer 4$630 USD
Retailer 12$653 USD
Retailer 8$673 USD
Retailer 11$900 USD
Rare Carat$1,015 USD

40 data points across 17 retailers

15 retailers$155 USD to $1,015 USD

A
Cheapest Retailer
-
$155 USD
B+
Retailer 2
-
$180 USD
View
B+
Retailer 3
-
$192 USD
View
A
Retailer 4
-
$192 USD
View
B+
Retailer 5
-
$335 USD
£264 GBP
View
B+
Retailer 6
-
$347 USD
£274 GBP
View
B
Retailer 7
-
$351 USD
View
B+
Retailer 8
-
$487 USD
View
B+
Retailer 9
-
$531 USD
View
B
Retailer 10
-
$614 USD
HK$4,800 HKD
View
B+
Retailer 11
-
$618 USD
View
B
Retailer 12
-
$653 USD
View
B
Retailer 13
-
$673 USD
View
B
Retailer 14
-
$900 USD
£709 GBP
View
Most Expensive
B
Rare Carat
496117921_l_496117921 · Oct 28
$1,015 USD
View
14 more retailers have this diamond
Prices start from $155 USDSave up to $860 USD

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
1.53ct Radiant
$155 USD