Radiant|Lab Grown|IGI

1.21ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG735580809

Shape and cutting style on the report: Cut cornered rectangular mixed cut

Certificate IGI LG735580809

Diamond specifications and retailer prices

From €260 EUR
As of November 4, 2026
Save €1,062 EUR (80%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: €1,704 EUR at Rare Carat · As of September 28, 2026
View at Rare Carat

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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG735580809 or 735580809. Listed at 20 retailers as of November 4, 2026, with a 408% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle25.5°
Pavilion angle33.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG735580809
Dimensions7.65 × 4.90 × 3.18 mm
L/W Ratio1.56
Culet sizeLong
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.65 mm4.90 mm1.21 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG735580809
Side View
Table 60.0%Crown 25.5°Girdle: MED-STKPavilion 33.4°Culet: LNGDepth 64.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: €1,704 EUR|Low: €249 EUR|High: €1,704 EUR|Avg: €666 EUR
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 5, 2026
Retailer 15€260 EUR
Retailer 7€291 EUR
Retailer 5€302 EUR
Retailer 3€322 EUR
Retailer 6€322 EUR
Retailer 14€448 EUR
Retailer 13€462 EUR
Retailer 11€519 EUR
Retailer 10€556 EUR
Retailer 2€564 EUR
Retailer 9€864 EUR
Retailer 4€1,036 EUR
Retailer 12€1,078 EUR
Retailer 8€1,288 EUR
Rare Carat€1,704 EUR

45 data points across 15 retailers

20 retailers€260 EUR to €1,322 EUR

A
Cheapest Retailer
-
€260 EUR
A
Retailer 2
-
€291 EUR
View
Final sale: no returns
A
Retailer 3
-
€302 EUR
View
Retailer 4
-
€322 EUR
View
Price last confirmed 11 days ago
A
Retailer 5
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€322 EUR
View
A
Retailer 6
-
€448 EUR
View
A
Retailer 7
-
€462 EUR
View
A
Retailer 8
-
€519 EUR
View
A
Retailer 9
-
€556 EUR
View
A
Retailer 10
-
€556 EUR
View
A
Retailer 11
-
€564 EUR
View
B+
Retailer 12
-
€864 EUR
View
B
Retailer 13
-
€1,036 EUR
View
B+
Retailer 14
-
€1,078 EUR
View
B
Retailer 15
-
€1,078 EUR
View
B
Retailer 16
-
€1,188 EUR
View
B
Retailer 17
-
€1,258 EUR
View
B
Retailer 18
-
€1,288 EUR
View
B
Retailer 19
-
€1,322 EUR
View
Most Expensive
Rare Carat
91965A_l_735580809 · Sep 28
€1,704 EUR
$1,920 USD
View
Price last confirmed 37 days ago
19 more retailers have this diamond
Prices start from €260 EURSave up to €1,062 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.

A
1.21ct Radiant
€260 EUR