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Radiant|Lab Grown|IGI

1.01ct I SI1 Radiant Lab Grown Diamond

GD • I/SI1 • IGI LG407938943

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

Certificate IGI LG407938943

Diamond specifications and retailer prices

From €546 EUR
As of November 6, 2026
Save €1,633 EUR (75%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: €3,536 EUR at MOH London · As of November 3, 2026
View at MOH London

About this 1.01ct lab-grown radiant diamond

This 1.01ct lab-grown radiant sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG407938943 or 407938943. Listed at 11 retailers as of November 4, 2026, with a 299% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.01
Carat
I
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle48.8°
Pavilion angle31.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG407938943
Dimensions6.21 × 4.89 × 3.56 mm
L/W Ratio1.27
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
6.21 mm4.89 mm1.01 ctI / SI1
OriginLab Grown
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG407938943
Side View
Table 63.5%Crown 48.8°Girdle: STK-THKPavilion 31.5°Culet: NoneDepth 72.8%

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: €3,536 EUR|Low: €546 EUR|High: €3,584 EUR|Avg: €1,645 EUR|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 2€546 EUR
Retailer 5€899 EUR
Retailer 9€978 EUR
Retailer 10€1,006 EUR
Retailer 6€1,043 EUR
Retailer 11€1,200 EUR
Retailer 3€1,499 EUR
Retailer 7€1,665 EUR
Retailer 8€1,954 EUR
Retailer 12€2,179 EUR
Retailer 4€2,985 EUR
MOH London€3,536 EUR

16 data points across 12 retailers

11 retailers€546 EUR to €2,179 EUR

B+
Cheapest Retailer
-
€546 EUR
B
Retailer 2
-
€899 EUR
View
C
Retailer 3
-
€978 EUR
View
C
Retailer 4
-
€1,006 EUR
View
Final sale: no returns
Retailer 5
-
€1,043 EUR
View
Price last confirmed 26 days ago
C
Retailer 6
-
€1,043 EUR
View
C
Retailer 7
-
€1,200 EUR
View
C
Retailer 8
-
€1,665 EUR
View
C
Retailer 9
-
€1,954 EUR
View
C
Retailer 10
-
€2,179 EUR
View
Most Expensive
MOH London
LG407938943 · Nov 3
€3,536 EUR
£3,109 GBP
View
Price under review
10 more retailers have this diamond
Prices start from €546 EURSave up to €1,633 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+
1.01ct Radiant
€546 EUR