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Round|Lab Grown|IGI

1.21ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG811623471

Shape and cutting style on the report: Round brilliant

Certificate IGI LG811623471

Diamond specifications and retailer prices

From €231 EUR
$258 USD
As of October 29, 2026
Save €1,362 EUR (86%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: €1,593 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.21ct lab-grown round diamond

This 1.21ct lab-grown round 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 LG811623471 or 811623471. Listed at 21 retailers as of October 29, 2026, with prices from €231 to €1,593, a €1,362 spread on the same certified stone. Brilliant Earth lists it at €1,593. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811623471
Dimensions6.92 × 6.86 × 4.16 mm
L/W Ratio1.01
Girdle conditionFaceted
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
6.92 mm6.86 mm1.21 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811623471
Side View
Table 59.0%Crown 34°Girdle: MediumPavilion 40.7°Culet: NoneDepth 60.3%

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 29
Current: €1,593 EUR|Low: €229 EUR|High: €1,871 EUR|Avg: €683 EUR|-14.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
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Retailer 11
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Retailer 21
November 1, 2026
Retailer 10€231 EUR
Retailer 21€258 EUR
Retailer 5€268 EUR
Retailer 6€286 EUR
Retailer 12€286 EUR
Retailer 18€430 EUR
Retailer 15€454 EUR
Retailer 13€477 EUR
Retailer 7€479 EUR
Retailer 17€492 EUR
Retailer 8€511 EUR
Retailer 2€546 EUR
Retailer 9€638 EUR
Retailer 4€880 EUR
Retailer 14€921 EUR
Retailer 20€931 EUR
Retailer 11€967 EUR
Retailer 19€1,015 EUR
Retailer 16€1,155 EUR
Retailer 3€1,352 EUR
Brilliant Earth€1,593 EUR

30 data points across 21 retailers

21 retailers€231 EUR to €1,593 EUR

A
Cheapest Retailer
-
€231 EUR
$258 USD
A
Retailer 2
-
€258 EUR
$288 USD
View
Final sale: no returns
A
Retailer 3
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€268 EUR
$299 USD
View
A
Retailer 4
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€286 EUR
$320 USD
View
A
Retailer 5
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€286 EUR
$320 USD
View
A
Retailer 6
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€430 EUR
$480 USD
View
A
Retailer 7
-
€454 EUR
HK$3,962 HKD
View
A
Retailer 8
-
€477 EUR
View
A
Retailer 9
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€479 EUR
$535 USD
View
A
Retailer 10
-
€492 EUR
ZAR 8,886 ZAR
View
A
Retailer 11
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€511 EUR
$571 USD
View
A
Retailer 12
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€546 EUR
£480 GBP
View
B+
Retailer 13
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€638 EUR
$713 USD
View
B+
Retailer 14
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€880 EUR
$983 USD
View
B+
Retailer 15
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€921 EUR
$1,029 USD
View
B+
Retailer 16
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€931 EUR
SGD 1,406 SGD
View
B+
Retailer 17
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€967 EUR
$1,080 USD
View
B+
Retailer 18
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€1,015 EUR
$1,134 USD
View
B+
Retailer 19
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€1,155 EUR
£1,016 GBP
View
Retailer 20
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€1,352 EUR
$1,510 USD
View
Price last confirmed 10 days ago
Most Expensive
B
Brilliant Earth
21422152A · Oct 31
€1,593 EUR
$1,780 USD
View
20 more retailers have this diamond
Prices start from €231 EURSave up to €1,362 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 Round
€231 EUR