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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 $221 AUD
$155 USD
As of October 27, 2026
Save $1,224 AUD (85%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,445 AUD 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 $221 to $1,445, a $1,224 spread on the same certified stone. Rare Carat lists it at $1,445. 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
Colour
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

How it works →
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: Oct 27
Current: $1,445 AUD|Low: $212 AUD|High: $1,637 AUD|Avg: $687 AUD|-11.7%
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
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Retailer 17
October 28, 2026
Retailer 15$221 AUD
Retailer 13$256 AUD
Retailer 14$273 AUD
Retailer 17$273 AUD
Retailer 7$302 AUD
Retailer 10$478 AUD
Retailer 2$495 AUD
Retailer 3$500 AUD
Retailer 6$693 AUD
Retailer 5$756 AUD
Retailer 9$875 AUD
Retailer 16$880 AUD
Retailer 4$897 AUD
Retailer 12$930 AUD
Retailer 8$959 AUD
Retailer 11$1,282 AUD
Rare Carat$1,445 AUD

40 data points across 17 retailers

15 retailers$221 AUD to $1,445 AUD

A
Cheapest Retailer
-
$221 AUD
$155 USD
B+
Retailer 2
-
$256 AUD
$180 USD
View
B+
Retailer 3
-
$273 AUD
$192 USD
View
A
Retailer 4
-
$273 AUD
$192 USD
View
B+
Retailer 5
-
$478 AUD
£264 GBP
View
B+
Retailer 6
-
$495 AUD
£274 GBP
View
B
Retailer 7
-
$500 AUD
$351 USD
View
B+
Retailer 8
-
$693 AUD
$487 USD
View
B+
Retailer 9
-
$756 AUD
$531 USD
View
B
Retailer 10
-
$875 AUD
HK$4,800 HKD
View
B+
Retailer 11
-
$880 AUD
$618 USD
View
B
Retailer 12
-
$930 AUD
$653 USD
View
B
Retailer 13
-
$959 AUD
$673 USD
View
B
Retailer 14
-
$1,282 AUD
£709 GBP
View
Most Expensive
B
Rare Carat
496117921_l_496117921 · Oct 28
$1,445 AUD
$1,015 USD
View
14 more retailers have this diamond
Prices start from $221 AUDSave up to $1,224 AUD

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
$221 AUD