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Round|Lab Grown|IGI

1.51ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG788624613

Shape and cutting style on the report: Round brilliant

Certificate IGI LG788624613

Diamond specifications and retailer prices

From €378 EUR
$422 USD
As of October 29, 2026
Save €3,561 EUR (90%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: €3,938 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG788624613 or 788624613. Listed at 26 retailers as of October 29, 2026, with prices from €378 to €3,938, a €3,561 spread on the same certified stone. Brilliant Earth lists it at €3,938. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG788624613
Dimensions7.32 × 7.37 × 4.55 mm
L/W Ratio1.01
Girdle conditionFaceted
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
7.32 mm7.37 mm1.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG788624613
Side View
Table 57.0%Crown 35.5°Girdle: MediumPavilion 40.8°Culet: NoneDepth 61.9%

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: Oct 29
Current: €3,938 EUR|Low: €363 EUR|High: €3,938 EUR|Avg: €1,002 EUR
Brilliant Earth
Retailer 2
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Retailer 12
Retailer 13
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Retailer 18
November 1, 2026
Retailer 17€378 EUR
Retailer 18€422 EUR
Retailer 7€423 EUR
Retailer 3€469 EUR
Retailer 9€469 EUR
Retailer 15€600 EUR
Retailer 10€628 EUR
Retailer 6€684 EUR
Retailer 11€734 EUR
Retailer 2€770 EUR
Retailer 13€806 EUR
Retailer 12€1,091 EUR
Retailer 14€1,315 EUR
Retailer 5€1,488 EUR
Retailer 8€1,506 EUR
Retailer 16€1,724 EUR
Retailer 4€1,754 EUR
Brilliant Earth€3,938 EUR

44 data points across 18 retailers

26 retailers€378 EUR to €3,938 EUR

A
Cheapest Retailer
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€378 EUR
$422 USD
A
Retailer 2
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€422 EUR
$472 USD
View
Final sale: no returns
A
Retailer 3
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€423 EUR
$473 USD
View
A
Retailer 4
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€469 EUR
$524 USD
View
A
Retailer 5
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€469 EUR
$524 USD
View
A
Retailer 6
-
€516 EUR
HK$4,500 HKD
View
A
Retailer 7
-
€600 EUR
$670 USD
View
A
Retailer 8
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€628 EUR
$702 USD
View
A
Retailer 9
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€684 EUR
$764 USD
View
A
Retailer 10
-
€734 EUR
View
A
Retailer 11
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€770 EUR
£678 GBP
View
A
Retailer 12
-
€806 EUR
ZAR 14,539 ZAR
View
A
Retailer 13
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€892 EUR
$997 USD
View
B+
Retailer 14
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€1,091 EUR
A$1,876 AUD
View
B+
Retailer 15
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€1,130 EUR
$1,263 USD
View
B+
Retailer 16
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€1,315 EUR
$1,469 USD
View
B+
Retailer 17
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€1,488 EUR
SGD 2,247 SGD
View
B+
Retailer 18
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€1,506 EUR
$1,683 USD
View
B+
Retailer 19
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€1,519 EUR
$1,697 USD
View
B+
Retailer 20
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€1,537 EUR
$1,717 USD
View
B
Retailer 21
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€1,703 EUR
$1,903 USD
View
B+
Retailer 22
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€1,724 EUR
£1,517 GBP
View
B
Retailer 23
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€1,754 EUR
$1,960 USD
View
Retailer 24
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€2,072 EUR
$2,315 USD
View
Price last confirmed 97 days ago
B
Retailer 25
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€2,603 EUR
£2,290 GBP
View
Most Expensive
B
Brilliant Earth
20465278A · Oct 31
€3,938 EUR
$4,400 USD
View
25 more retailers have this diamond
Prices start from €378 EURSave up to €3,561 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
1.51ct Round
€378 EUR