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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 $634 USD
As of October 30, 2026
Save $1,246 USD (66%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $2,069 USD 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 26, 2026, with a 197% 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: $2,069 USD|Low: $506 USD|High: $3,137 USD|Avg: $1,215 USD
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 30, 2026
Retailer 8$634 USD
Retailer 12$690 USD
Retailer 4$710 USD
Retailer 3$736 USD
Retailer 10$736 USD
Retailer 9$900 USD
Retailer 2$1,054 USD
Retailer 5$1,175 USD
Retailer 11$1,202 USD
Retailer 7$1,880 USD
NZ Jewellers$2,069 USD
Retailer 6$3,104 USD

43 data points across 12 retailers

12 retailers$634 USD to $1,880 USD

B+
Cheapest Retailer
-
$634 USD
B
Retailer 2
-
$690 USD
View
B
Retailer 3
-
$710 USD
View
Final sale: no returns
Retailer 4
-
$736 USD
View
Price last confirmed 14 days ago
B
Retailer 5
-
$736 USD
View
B
Retailer 6
-
$900 USD
View
B
Retailer 7
-
$1,054 USD
£830 GBP
View
B
Retailer 8
-
$1,175 USD
£925 GBP
View
B
Retailer 9
-
$1,202 USD
View
B
Retailer 10
-
$1,880 USD
View
Most Expensive
NZ Jewellers
778fde8f-ec66-46ae-9a88-26e73e576dcc · Oct 28
$2,069 USD
View
Price under review
10 more retailers have this diamond
Prices start from $634 USDSave up to $1,246 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.

B+
1.03ct Radiant
$634 USD