Radiant|Lab Grown|IGI

1.21ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG799677049

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

Certificate IGI LG799677049

Diamond specifications and retailer prices

From €219 EUR
$245 USD
As of October 30, 2026
Save €979 EUR (82%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: €1,660 EUR at Rare Carat · As of October 18, 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 LG799677049 or 799677049. Listed at 21 retailers as of October 30, 2026, with a 446% 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
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.6°
Pavilion angle30.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799677049
Dimensions8.05 × 5.11 × 3.33 mm
L/W Ratio1.58
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
8.05 mm5.11 mm1.21 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG799677049
Side View
Table 62.0%Crown 46.6°Girdle: Slightly ThickPavilion 30.7°Culet: NoneDepth 65.2%

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: Oct 30
Current: €1,660 EUR|Low: €219 EUR|High: €1,687 EUR|Avg: €637 EUR|-1.6%
Rare Carat
Retailer 2
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Retailer 22
November 1, 2026
Retailer 4€219 EUR
Retailer 7€245 EUR
Retailer 19€255 EUR
Retailer 8€272 EUR
Retailer 22€272 EUR
Retailer 3€309 EUR
Retailer 15€448 EUR
Retailer 17€452 EUR
Retailer 9€457 EUR
Retailer 2€470 EUR
Retailer 6€485 EUR
Retailer 16€513 EUR
Retailer 18€664 EUR
Retailer 21€687 EUR
Retailer 5€875 EUR
Retailer 20€879 EUR
Retailer 12€880 EUR
Retailer 14€922 EUR
Retailer 10€1,064 EUR
Retailer 13€1,091 EUR
Retailer 11€1,198 EUR
Rare Carat€1,660 EUR

39 data points across 22 retailers

21 retailers€219 EUR to €1,198 EUR

A
Cheapest Retailer
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€219 EUR
$245 USD
A
Retailer 2
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€245 EUR
$274 USD
View
Final sale: no returns
A
Retailer 3
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€255 EUR
$285 USD
View
Retailer 4
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€272 EUR
$304 USD
View
Price last confirmed 7 days ago
A
Retailer 5
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€272 EUR
$304 USD
View
A
Retailer 6
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€309 EUR
HK$2,700 HKD
View
A
Retailer 7
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€452 EUR
View
A
Retailer 8
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€457 EUR
$511 USD
View
A
Retailer 9
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€470 EUR
ZAR 8,490 ZAR
View
A
Retailer 10
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€485 EUR
$542 USD
View
A
Retailer 11
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€513 EUR
£451 GBP
View
B+
Retailer 12
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€664 EUR
A$1,142 AUD
View
B+
Retailer 13
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€687 EUR
$767 USD
View
B+
Retailer 14
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€875 EUR
$978 USD
View
B+
Retailer 15
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€879 EUR
$982 USD
View
B+
Retailer 16
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€880 EUR
SGD 1,328 SGD
View
B+
Retailer 17
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€922 EUR
$1,030 USD
View
B
Retailer 18
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€1,064 EUR
£936 GBP
View
B+
Retailer 19
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€1,091 EUR
£960 GBP
View
B
Retailer 20
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€1,198 EUR
$1,339 USD
View
Most Expensive
Rare Carat
A10-142A · Oct 18
€1,660 EUR
$1,855 USD
View
Price last confirmed 14 days ago
20 more retailers have this diamond
Prices start from €219 EURSave up to €979 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
€219 EUR