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Round|Lab Grown|IGI

1.51ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG778644701

Shape and cutting style on the report: Round brilliant

Certificate IGI LG778644701

Diamond specifications and retailer prices

From €288 EUR
$322 USD
As of October 29, 2026
Save €1,976 EUR (87%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: €2,265 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 LG778644701 or 778644701. Listed at 24 retailers as of October 29, 2026, with prices from €288 to €2,265, a €1,976 spread on the same certified stone. Brilliant Earth lists it at €2,265. 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 angle34.8°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778644701
Dimensions7.33 × 7.35 × 4.57 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
7.33 mm7.35 mm1.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778644701
Side View
Table 56.0%Crown 34.8°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.3%

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: €2,265 EUR|Low: €288 EUR|High: €3,509 EUR|Avg: €874 EUR|-35.5%
Brilliant Earth
Retailer 2
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Retailer 22
November 1, 2026
Retailer 6€288 EUR
Retailer 7€322 EUR
Retailer 21€335 EUR
Retailer 17€357 EUR
Retailer 14€360 EUR
Retailer 2€458 EUR
Retailer 12€497 EUR
Retailer 16€570 EUR
Retailer 22€580 EUR
Retailer 11€619 EUR
Retailer 13€637 EUR
Retailer 10€839 EUR
Retailer 4€862 EUR
Retailer 19€872 EUR
Retailer 9€1,145 EUR
Retailer 18€1,149 EUR
Retailer 5€1,189 EUR
Retailer 15€1,280 EUR
Retailer 3€1,417 EUR
Retailer 8€1,440 EUR
Retailer 20€1,517 EUR
Brilliant Earth€2,265 EUR

23 data points across 22 retailers

24 retailers€288 EUR to €2,265 EUR

A
Cheapest Retailer
-
€288 EUR
$322 USD
A
Retailer 2
-
€322 EUR
$360 USD
View
Final sale: no returns
A
Retailer 3
-
€335 EUR
$374 USD
View
A
Retailer 4
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€357 EUR
$399 USD
View
A
Retailer 5
-
€360 EUR
$402 USD
View
A
Retailer 6
-
€458 EUR
£403 GBP
View
A
Retailer 7
-
€497 EUR
$555 USD
View
A
Retailer 8
-
€570 EUR
View
A
Retailer 9
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€580 EUR
$648 USD
View
A
Retailer 10
-
€619 EUR
ZAR 11,164 ZAR
View
A
Retailer 11
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€627 EUR
A$1,078 AUD
View
A
Retailer 12
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€637 EUR
£560 GBP
View
A
Retailer 13
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€839 EUR
A$1,442 AUD
View
B+
Retailer 14
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€862 EUR
$963 USD
View
B+
Retailer 15
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€872 EUR
$974 USD
View
B+
Retailer 16
-
€888 EUR
$992 USD
View
B+
Retailer 17
-
€1,145 EUR
SGD 1,729 SGD
View
B+
Retailer 18
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€1,149 EUR
$1,284 USD
View
B+
Retailer 19
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€1,189 EUR
$1,329 USD
View
B+
Retailer 20
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€1,280 EUR
$1,430 USD
View
B+
Retailer 21
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€1,417 EUR
$1,583 USD
View
B+
Retailer 22
-
€1,440 EUR
£1,267 GBP
View
B+
Retailer 23
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€1,517 EUR
A$2,607 AUD
View
Most Expensive
B
Brilliant Earth
21000796A · Oct 31
€2,265 EUR
$2,530 USD
View
23 more retailers have this diamond
Prices start from €288 EURSave up to €1,976 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
€288 EUR