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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 €139 EUR
$155 USD
As of October 27, 2026
Save €770 EUR (85%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €909 EUR 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 €139 to €909, a €770 spread on the same certified stone. Rare Carat lists it at €909. 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: €909 EUR|Low: €133 EUR|High: €1,029 EUR|Avg: €432 EUR|-11.7%
Rare Carat
Retailer 2
Retailer 3
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Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
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Retailer 17
October 28, 2026
Retailer 15€139 EUR
Retailer 13€161 EUR
Retailer 14€172 EUR
Retailer 17€172 EUR
Retailer 7€190 EUR
Retailer 10€300 EUR
Retailer 2€311 EUR
Retailer 3€314 EUR
Retailer 6€436 EUR
Retailer 5€475 EUR
Retailer 9€550 EUR
Retailer 16€553 EUR
Retailer 4€564 EUR
Retailer 12€584 EUR
Retailer 8€603 EUR
Retailer 11€806 EUR
Rare Carat€909 EUR

39 data points across 17 retailers

15 retailers€139 EUR to €909 EUR

A
Cheapest Retailer
-
€139 EUR
$155 USD
B+
Retailer 2
-
€161 EUR
$180 USD
View
Retailer 3
-
€172 EUR
$192 USD
View
Price last confirmed 7 days ago
A
Retailer 4
-
€172 EUR
$192 USD
View
B+
Retailer 5
-
€300 EUR
£264 GBP
View
B+
Retailer 6
-
€311 EUR
£274 GBP
View
B
Retailer 7
-
€314 EUR
$351 USD
View
B+
Retailer 8
-
€436 EUR
$487 USD
View
B+
Retailer 9
-
€475 EUR
$531 USD
View
B
Retailer 10
-
€550 EUR
HK$4,800 HKD
View
B+
Retailer 11
-
€553 EUR
$618 USD
View
B
Retailer 12
-
€584 EUR
$653 USD
View
B
Retailer 13
-
€603 EUR
$673 USD
View
Retailer 14
-
€806 EUR
£709 GBP
View
Price last confirmed 7 days ago
Most Expensive
B
Rare Carat
496117921_l_496117921 · Oct 28
€909 EUR
$1,015 USD
View
14 more retailers have this diamond
Prices start from €139 EURSave up to €770 EUR

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
€139 EUR