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Round|Lab Grown|IGI

1.51ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG770636656

Shape and cutting style on the report: Round brilliant

Certificate IGI LG770636656

Diamond specifications and retailer prices

From €344 EUR
As of November 3, 2026
Save €3,046 EUR (90%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: €3,390 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 LG770636656 or 770636656. Listed at 27 retailers as of November 3, 2026, with prices from €344 to €3,390, a €3,046 spread on the same certified stone. Brilliant Earth lists it at €3,390. 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 angle35.8°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG770636656
Dimensions7.29 × 7.36 × 4.52 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
7.29 mm7.36 mm1.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG770636656
Side View
Table 58.0%Crown 35.8°Girdle: MediumPavilion 40.5°Culet: NoneDepth 61.7%

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: €3,390 EUR|Low: €332 EUR|High: €3,390 EUR|Avg: €896 EUR
Brilliant Earth
Retailer 2
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Retailer 24
November 5, 2026
Retailer 8€344 EUR
Retailer 23€385 EUR
Retailer 4€386 EUR
Retailer 3€427 EUR
Retailer 6€427 EUR
Retailer 10€465 EUR
Retailer 18€545 EUR
Retailer 19€559 EUR
Retailer 14€575 EUR
Retailer 12€643 EUR
Retailer 24€674 EUR
Retailer 20€675 EUR
Retailer 21€737 EUR
Retailer 2€764 EUR
Retailer 9€874 EUR
Retailer 13€996 EUR
Retailer 5€1,008 EUR
Retailer 16€1,362 EUR
Retailer 7€1,373 EUR
Retailer 11€1,406 EUR
Retailer 15€1,592 EUR
Retailer 17€1,598 EUR
Retailer 22€1,669 EUR
Brilliant Earth€3,390 EUR

27 data points across 24 retailers

27 retailers€344 EUR to €3,390 EUR

A
Cheapest Retailer
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€344 EUR
A
Retailer 2
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€385 EUR
View
Final sale: no returns
A
Retailer 3
-
€386 EUR
View
Retailer 4
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€427 EUR
View
Price last confirmed 11 days ago
A
Retailer 5
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€427 EUR
View
A
Retailer 6
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€465 EUR
View
A
Retailer 7
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€545 EUR
View
A
Retailer 8
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€559 EUR
View
A
Retailer 9
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€575 EUR
View
A
Retailer 10
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€643 EUR
View
A
Retailer 11
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€674 EUR
View
A
Retailer 12
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€675 EUR
View
A
Retailer 13
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€737 EUR
View
A
Retailer 14
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€764 EUR
View
B+
Retailer 15
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€874 EUR
View
B+
Retailer 16
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€996 EUR
View
B+
Retailer 17
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€1,008 EUR
View
Retailer 18
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€1,023 EUR
View
Price last confirmed 8 days ago
B+
Retailer 19
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€1,362 EUR
View
B+
Retailer 20
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€1,373 EUR
View
B+
Retailer 21
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€1,406 EUR
View
B
Retailer 22
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€1,495 EUR
View
Retailer 23
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€1,535 EUR
View
Price last confirmed 35 days ago
B
Retailer 24
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€1,592 EUR
View
B
Retailer 25
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€1,598 EUR
View
B
Retailer 26
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€1,669 EUR
View
Most Expensive
B
Brilliant Earth
20708800A · Nov 3
€3,390 EUR
$3,820 USD
View
26 more retailers have this diamond
Prices start from €344 EURSave up to €3,046 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
€344 EUR