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Radiant|Lab Grown|IGI

1.21ct D FL Radiant Lab Grown Diamond

EX • D/FL • IGI LG784604687

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

Certificate IGI LG784604687

Diamond specifications and retailer prices

From €1,199 EUR
$1,340 USD
As of October 30, 2026
Save €363 EUR (23%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: €1,562 EUR at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 1.21ct lab-grown radiant diamond

This 1.21ct lab-grown radiant sits in the classic one-carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG784604687 or 784604687. Listed at 2 retailers as of October 30, 2026, with prices from €1,199 to €1,562, a €363 spread on the same certified stone. Blue Nile lists it at €1,562. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
D
Color
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.9°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG784604687
Dimensions7.66 × 5.37 × 3.52 mm
L/W Ratio1.43
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
7.66 mm5.37 mm1.21 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG784604687
Side View
Table 63.0%Crown 41.9°Girdle: MediumPavilion 35.1°Culet: NoneDepth 65.5%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: €1,562 EUR|Low: €320 EUR|High: €4,100 EUR|Avg: €1,528 EUR
Blue Nile
Retailer 2
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September 28, 2026
Retailer 12€320 EUR
Retailer 10€573 EUR
Retailer 11€752 EUR
Retailer 9€998 EUR
Retailer 8€1,003 EUR
Retailer 16€1,021 EUR
Retailer 6€1,178 EUR
Retailer 2€1,199 EUR
Blue Nile€1,562 EUR
Retailer 14€1,567 EUR
Retailer 15€1,699 EUR
Retailer 5€1,702 EUR
Retailer 13€1,975 EUR
Retailer 4€2,030 EUR
Retailer 7€2,634 EUR
Retailer 3€4,100 EUR

2 data points across 16 retailers

2 retailers€1,199 EUR to €1,562 EUR

B+
Cheapest Retailer
-
€1,199 EUR
$1,340 USD
Most Expensive
B
Blue Nile
29886102 · Oct 31
€1,562 EUR
$1,745 USD
View
1 more retailer has this diamond
Prices start from €1,199 EURSave up to €363 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+
1.21ct Radiant
€1,199 EUR