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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 $275 NZD
$155 USD
As of October 27, 2026
Save $1,526 NZD (85%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,801 NZD 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 $275 to $1,801, a $1,526 spread on the same certified stone. Rare Carat lists it at $1,801. 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

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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: $1,801 NZD|Low: $264 NZD|High: $2,040 NZD|Avg: $856 NZD|-11.7%
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
Retailer 17
October 28, 2026
Retailer 15$275 NZD
Retailer 13$319 NZD
Retailer 14$341 NZD
Retailer 17$341 NZD
Retailer 7$376 NZD
Retailer 10$595 NZD
Retailer 2$616 NZD
Retailer 3$623 NZD
Retailer 6$864 NZD
Retailer 5$942 NZD
Retailer 9$1,090 NZD
Retailer 16$1,097 NZD
Retailer 4$1,118 NZD
Retailer 12$1,159 NZD
Retailer 8$1,195 NZD
Retailer 11$1,598 NZD
Rare Carat$1,801 NZD

39 data points across 17 retailers

15 retailers$275 NZD to $1,801 NZD

A
Cheapest Retailer
-
$275 NZD
$155 USD
B+
Retailer 2
-
$319 NZD
$180 USD
View
Retailer 3
-
$341 NZD
$192 USD
View
Price last confirmed 7 days ago
A
Retailer 4
-
$341 NZD
$192 USD
View
B+
Retailer 5
-
$595 NZD
£264 GBP
View
B+
Retailer 6
-
$616 NZD
£274 GBP
View
B
Retailer 7
-
$623 NZD
$351 USD
View
B+
Retailer 8
-
$864 NZD
$487 USD
View
B+
Retailer 9
-
$942 NZD
$531 USD
View
B
Retailer 10
-
$1,090 NZD
HK$4,800 HKD
View
B+
Retailer 11
-
$1,097 NZD
$618 USD
View
Price last confirmed 7 days ago
B
Retailer 12
-
$1,159 NZD
$653 USD
View
B
Retailer 13
-
$1,195 NZD
$673 USD
View
Retailer 14
-
$1,598 NZD
£709 GBP
View
Price last confirmed 7 days ago
Most Expensive
B
Rare Carat
496117921_l_496117921 · Oct 28
$1,801 NZD
$1,015 USD
View
14 more retailers have this diamond
Prices start from $275 NZDSave up to $1,526 NZD

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
$275 NZD