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Radiant|Lab Grown|IGI

1.03ct D SI2 Radiant Lab Grown Diamond

ID • D/SI2 • IGI LG472171381

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

Certificate IGI LG472171381

Diamond specifications and retailer prices

From €564 EUR
$630 USD
As of October 30, 2026
Save €1,119 EUR (66%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €1,852 EUR at NZ Jewellers · As of October 28, 2026
View at NZ Jewellers

About this 1.03ct lab-grown radiant diamond

This 1.03ct lab-grown radiant sits in the classic one-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG472171381 or 472171381. Listed at 12 retailers as of October 30, 2026, with a 198% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.03
Carat
D
Color
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.7°
Pavilion angle30.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG472171381
Dimensions6.46 × 5.10 × 3.47 mm
L/W Ratio1.27
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
6.46 mm5.10 mm1.03 ctD / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG472171381
Side View
Table 62.5%Crown 41.7°Girdle: Slightly ThickPavilion 30.3°Culet: NoneDepth 68.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: €1,852 EUR|Low: €453 EUR|High: €2,808 EUR|Avg: €1,092 EUR
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 5€564 EUR
Retailer 9€567 EUR
Retailer 12€618 EUR
Retailer 4€636 EUR
Retailer 3€659 EUR
Retailer 10€659 EUR
Retailer 6€943 EUR
Retailer 2€1,052 EUR
Retailer 11€1,076 EUR
Retailer 8€1,683 EUR
NZ Jewellers€1,852 EUR
Retailer 7€2,778 EUR

42 data points across 12 retailers

12 retailers€564 EUR to €1,683 EUR

B+
Cheapest Retailer
-
€564 EUR
$630 USD
B+
Retailer 2
-
€567 EUR
$634 USD
View
B
Retailer 3
-
€618 EUR
$690 USD
View
B
Retailer 4
-
€636 EUR
$710 USD
View
Final sale: no returns
Retailer 5
-
€659 EUR
$736 USD
View
Price last confirmed 15 days ago
B
Retailer 6
-
€659 EUR
$736 USD
View
B
Retailer 7
-
€943 EUR
£830 GBP
View
B
Retailer 8
-
€1,052 EUR
£925 GBP
View
B
Retailer 9
-
€1,076 EUR
$1,202 USD
View
B
Retailer 10
-
€1,683 EUR
$1,880 USD
View
Most Expensive
NZ Jewellers
778fde8f-ec66-46ae-9a88-26e73e576dcc · Oct 28
€1,852 EUR
$2,069 USD
View
Price under review
10 more retailers have this diamond
Prices start from €564 EURSave up to €1,119 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.

B+
1.03ct Radiant
€564 EUR