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Round|Lab Grown|IGI

1.51ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG786646501

Shape and cutting style on the report: Round brilliant

Certificate IGI LG786646501

Diamond specifications and retailer prices

From €375 EUR
As of November 3, 2026
Save €3,531 EUR (90%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: €3,905 EUR at Brilliant Earth · As of November 3, 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 LG786646501 or 786646501. Listed at 24 retailers as of November 3, 2026, with prices from €375 to €3,905, a €3,531 spread on the same certified stone. Brilliant Earth lists it at €3,905. 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
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG786646501
Dimensions7.42 × 7.45 × 4.44 mm
L/W Ratio1.00
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
7.42 mm7.45 mm1.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG786646501
Side View
Table 59.0%Crown 33.2°Girdle: MediumPavilion 40.6°Culet: NoneDepth 59.8%

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 3
Current: €3,905 EUR|Low: €359 EUR|High: €3,905 EUR|Avg: €1,092 EUR
Brilliant Earth
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
Retailer 16
November 5, 2026
Retailer 16€375 EUR
Retailer 13€419 EUR
Retailer 7€420 EUR
Retailer 3€465 EUR
Retailer 14€595 EUR
Retailer 6€678 EUR
Retailer 9€729 EUR
Retailer 2€756 EUR
Retailer 11€801 EUR
Retailer 12€1,082 EUR
Retailer 10€1,133 EUR
Retailer 5€1,475 EUR
Retailer 8€1,494 EUR
Retailer 15€1,709 EUR
Retailer 4€1,740 EUR
Brilliant Earth€3,905 EUR

45 data points across 16 retailers

24 retailers€375 EUR to €3,905 EUR

A
Cheapest Retailer
-
€375 EUR
A
Retailer 2
-
€419 EUR
View
Final sale: no returns
A
Retailer 3
-
€420 EUR
View
Retailer 4
-
€465 EUR
View
Price last confirmed 11 days ago
A
Retailer 5
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€465 EUR
View
A
Retailer 6
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€511 EUR
View
A
Retailer 7
-
€595 EUR
View
A
Retailer 8
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€623 EUR
View
A
Retailer 9
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€678 EUR
View
A
Retailer 10
-
€729 EUR
View
A
Retailer 11
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€756 EUR
View
A
Retailer 12
-
€801 EUR
View
A
Retailer 13
-
€885 EUR
View
B+
Retailer 14
-
€1,082 EUR
View
B+
Retailer 15
-
€1,133 EUR
View
B+
Retailer 16
-
€1,475 EUR
View
B+
Retailer 17
-
€1,494 EUR
View
B+
Retailer 18
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€1,506 EUR
View
B+
Retailer 19
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€1,523 EUR
View
B
Retailer 20
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€1,689 EUR
View
Retailer 21
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€1,709 EUR
View
Price last confirmed 10 days ago
B+
Retailer 22
-
€1,740 EUR
View
Retailer 23
-
€2,581 EUR
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
21370785A · Nov 3
€3,905 EUR
$4,400 USD
View
23 more retailers have this diamond
Prices start from €375 EURSave up to €3,531 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
€375 EUR