Radiant|Lab Grown|IGI

1.00ct D SI1 Radiant Lab Grown Diamond

ID • D/SI1 • IGI LG472170773

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

Certificate IGI LG472170773

Diamond specifications and retailer prices

From €647 EUR
As of November 6, 2026
Save €571 EUR (47%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €2,110 EUR at NZ Jewellers · As of November 6, 2026
View at NZ Jewellers

About this 1ct lab-grown radiant diamond

This 1ct lab-grown radiant sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG472170773 or 472170773. Listed at 12 retailers as of November 6, 2026, with a 88% 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

1.00
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.7°
Pavilion angle31°
OriginLab Grown
Grading LabIGI
CertificateIGI LG472170773
Dimensions6.62 × 5.12 × 3.29 mm
L/W Ratio1.29
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
6.62 mm5.12 mm1.00 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG472170773
Side View
Table 68.5%Crown 41.7°Girdle: MED-STKPavilion 31°Culet: NoneDepth 64.3%

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: Nov 6
Current: €2,110 EUR|Low: €621 EUR|High: €2,985 EUR|Avg: €1,239 EUR
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 7€647 EUR
Retailer 11€704 EUR
Retailer 3€724 EUR
Retailer 9€751 EUR
Retailer 8€905 EUR
Retailer 5€909 EUR
Retailer 2€1,191 EUR
Retailer 10€1,217 EUR
Retailer 6€1,849 EUR
NZ Jewellers€2,110 EUR
Retailer 4€2,947 EUR

44 data points across 11 retailers

12 retailers€647 EUR to €1,217 EUR

B+
Cheapest Retailer
-
€647 EUR
B
Retailer 2
-
€704 EUR
View
B
Retailer 3
-
€724 EUR
View
Final sale: no returns
Retailer 4
-
€751 EUR
View
Price last confirmed 26 days ago
B
Retailer 5
-
€751 EUR
View
B
Retailer 6
-
€905 EUR
View
B
Retailer 7
-
€909 EUR
View
B
Retailer 8
-
€1,191 EUR
View
B
Retailer 9
-
€1,217 EUR
View
Retailer 10
-
€1,849 EUR
View
Price under review
Most Expensive
NZ Jewellers
7693c38d-db1f-4306-a8c8-0bd39cf2f50c · Nov 6
€2,110 EUR
$2,356 USD
View
Price under review
10 more retailers have this diamond
Prices start from €647 EURSave up to €571 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+
1.00ct Radiant
€647 EUR