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Round|Lab Grown|IGI

1.51ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG754508720

Shape and cutting style on the report: Round brilliant

Certificate IGI LG754508720

Diamond specifications and retailer prices

From €365 EUR
As of November 4, 2026
Save €3,842 EUR (91%) vs most expensive(unlock to see where)
32 retailers carry this diamond
Most expensive: €4,207 EUR at Brilliant Earth · As of November 4, 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 LG754508720 or 754508720. Listed at 32 retailers as of November 4, 2026, with prices from €365 to €4,207, a €3,842 spread on the same certified stone. Brilliant Earth lists it at €4,207. 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 angle34.5°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754508720
Dimensions7.31 × 7.36 × 4.56 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
7.31 mm7.36 mm1.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754508720
Side View
Table 57.0%Crown 34.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.1%

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: €1,599 EUR|Low: €365 EUR|High: €2,663 EUR|Avg: €1,068 EUR|-6.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
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Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
November 5, 2026
Retailer 8€365 EUR
Retailer 20€506 EUR
Retailer 2€528 EUR
Retailer 22€533 EUR
Retailer 7€581 EUR
Retailer 10€599 EUR
Retailer 18€664 EUR
Retailer 9€669 EUR
Retailer 19€707 EUR
Retailer 12€732 EUR
Retailer 11€754 EUR
Retailer 13€943 EUR
Retailer 16€958 EUR
Retailer 3€1,091 EUR
Retailer 4€1,405 EUR
Retailer 6€1,444 EUR
Retailer 14€1,457 EUR
Retailer 21€1,542 EUR
Retailer 15€1,559 EUR
Retailer 1€1,599 EUR
Retailer 17€1,602 EUR
Retailer 5€2,663 EUR

38 data points across 22 retailers

32 retailers€365 EUR to €4,207 EUR

Retailer 1
-
€300 EUR
Price last confirmed 26 days ago
Retailer 2
-
€317 EUR
View
Price last confirmed 38 days ago
Retailer 3
-
€348 EUR
View
Price last confirmed 30 days ago
A
Retailer 4
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€365 EUR
View
Final sale: no returns
Retailer 5
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€368 EUR
View
Price last confirmed 44 days ago
Retailer 6
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€372 EUR
View
Price last confirmed 26 days ago
Retailer 7
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€372 EUR
View
Price last confirmed 34 days ago
A
Retailer 8
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€372 EUR
View
Retailer 9
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€389 EUR
View
Price last confirmed 37 days ago
A
Retailer 10
-
€506 EUR
View
A
Retailer 11
-
€533 EUR
View
A
Retailer 12
-
€581 EUR
View
A
Retailer 13
-
€599 EUR
View
A
Retailer 14
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€664 EUR
View
A
Retailer 15
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€669 EUR
View
A
Retailer 16
-
€707 EUR
View
A
Retailer 17
-
€732 EUR
View
A
Retailer 18
-
€754 EUR
View
B+
Retailer 19
-
€943 EUR
View
B+
Retailer 20
-
€958 EUR
View
B+
Retailer 21
-
€1,091 EUR
View
Retailer 22
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€1,320 EUR
View
Price last confirmed 27 days ago
Retailer 23
-
€1,396 EUR
View
Price last confirmed 36 days ago
B+
Retailer 24
-
€1,405 EUR
View
B+
Retailer 25
-
€1,444 EUR
View
B+
Retailer 26
-
€1,457 EUR
View
B+
Retailer 27
-
€1,542 EUR
View
B
Retailer 28
-
€1,559 EUR
View
B+
Retailer 29
-
€1,599 EUR
View
B+
Retailer 30
-
€1,602 EUR
View
B
Retailer 31
-
€2,663 EUR
View
Most Expensive
B
Brilliant Earth
18668765Y · Nov 4
€4,207 EUR
$4,740 USD
View
31 more retailers have this diamond
Prices start from €365 EURSave up to €3,842 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
€365 EUR