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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 €217 EUR
As of November 4, 2026
Save €970 EUR (82%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: €1,646 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 November 4, 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
Colour
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: Nov 4
Current: €1,646 EUR|Low: €217 EUR|High: €1,673 EUR|Avg: €638 EUR|-1.6%
Rare Carat
Retailer 2
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Retailer 22
November 5, 2026
Retailer 4€217 EUR
Retailer 7€243 EUR
Retailer 19€253 EUR
Retailer 8€270 EUR
Retailer 22€270 EUR
Retailer 3€306 EUR
Retailer 15€444 EUR
Retailer 18€448 EUR
Retailer 9€454 EUR
Retailer 17€466 EUR
Retailer 6€481 EUR
Retailer 2€508 EUR
Retailer 16€661 EUR
Retailer 21€681 EUR
Retailer 5€868 EUR
Retailer 12€872 EUR
Retailer 20€872 EUR
Retailer 14€914 EUR
Retailer 10€1,054 EUR
Retailer 13€1,079 EUR
Retailer 11€1,188 EUR
Rare Carat€1,646 EUR

41 data points across 22 retailers

21 retailers€217 EUR to €1,188 EUR

A
Cheapest Retailer
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€217 EUR
A
Retailer 2
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€243 EUR
View
Final sale: no returns
A
Retailer 3
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€253 EUR
View
Retailer 4
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€270 EUR
View
Price last confirmed 11 days ago
A
Retailer 5
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€270 EUR
View
A
Retailer 6
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€306 EUR
View
A
Retailer 7
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€448 EUR
View
A
Retailer 8
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€454 EUR
View
A
Retailer 9
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€466 EUR
View
A
Retailer 10
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€481 EUR
View
A
Retailer 11
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€508 EUR
View
B+
Retailer 12
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€661 EUR
View
B+
Retailer 13
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€681 EUR
View
B+
Retailer 14
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€868 EUR
View
B+
Retailer 15
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€872 EUR
View
B+
Retailer 16
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€872 EUR
View
B+
Retailer 17
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€914 EUR
View
B
Retailer 18
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€1,054 EUR
View
B+
Retailer 19
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€1,079 EUR
View
B
Retailer 20
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€1,188 EUR
View
Most Expensive
Rare Carat
A10-142A · Oct 18
€1,646 EUR
$1,855 USD
View
Price last confirmed 17 days ago
20 more retailers have this diamond
Prices start from €217 EURSave up to €970 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
€217 EUR