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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 €347 EUR
$388 USD
As of October 29, 2026
Save €3,072 EUR (90%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: €3,419 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 LG770636656 or 770636656. Listed at 27 retailers as of October 29, 2026, with prices from €347 to €3,419, a €3,072 spread on the same certified stone. Brilliant Earth lists it at €3,419. 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 angle35.8°
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: Oct 29
Current: €3,419 EUR|Low: €335 EUR|High: €3,419 EUR|Avg: €876 EUR
Brilliant Earth
Retailer 2
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Retailer 24
November 1, 2026
Retailer 7€347 EUR
Retailer 18€388 EUR
Retailer 3€389 EUR
Retailer 5€431 EUR
Retailer 24€431 EUR
Retailer 10€470 EUR
Retailer 20€553 EUR
Retailer 14€580 EUR
Retailer 19€582 EUR
Retailer 12€649 EUR
Retailer 22€680 EUR
Retailer 13€680 EUR
Retailer 23€740 EUR
Retailer 2€779 EUR
Retailer 9€882 EUR
Retailer 21€1,000 EUR
Retailer 4€1,017 EUR
Retailer 16€1,374 EUR
Retailer 6€1,385 EUR
Retailer 11€1,418 EUR
Retailer 15€1,606 EUR
Retailer 17€1,612 EUR
Retailer 8€1,693 EUR
Brilliant Earth€3,419 EUR

27 data points across 24 retailers

27 retailers€347 EUR to €3,419 EUR

A
Cheapest Retailer
-
€347 EUR
$388 USD
A
Retailer 2
-
€388 EUR
$434 USD
View
Final sale: no returns
A
Retailer 3
-
€389 EUR
$435 USD
View
A
Retailer 4
-
€431 EUR
$481 USD
View
A
Retailer 5
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€431 EUR
$481 USD
View
A
Retailer 6
-
€470 EUR
HK$4,100 HKD
View
A
Retailer 7
-
€553 EUR
£487 GBP
View
A
Retailer 8
-
€580 EUR
$648 USD
View
A
Retailer 9
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€582 EUR
$650 USD
View
A
Retailer 10
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€649 EUR
$725 USD
View
A
Retailer 11
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€680 EUR
A$1,168 AUD
View
A
Retailer 12
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€680 EUR
View
A
Retailer 13
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€740 EUR
ZAR 13,362 ZAR
View
A
Retailer 14
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€779 EUR
£685 GBP
View
B+
Retailer 15
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€882 EUR
$985 USD
View
B+
Retailer 16
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€1,000 EUR
A$1,718 AUD
View
B+
Retailer 17
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€1,017 EUR
$1,136 USD
View
B+
Retailer 18
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€1,032 EUR
$1,153 USD
View
B+
Retailer 19
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€1,374 EUR
SGD 2,075 SGD
View
B+
Retailer 20
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€1,385 EUR
$1,547 USD
View
B+
Retailer 21
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€1,418 EUR
$1,585 USD
View
B
Retailer 22
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€1,507 EUR
$1,684 USD
View
Retailer 23
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€1,549 EUR
A$2,662 AUD
View
Price last confirmed 31 days ago
B
Retailer 24
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€1,606 EUR
$1,794 USD
View
B
Retailer 25
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€1,612 EUR
$1,801 USD
View
B
Retailer 26
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€1,693 EUR
£1,489 GBP
View
Most Expensive
B
Brilliant Earth
20708800A · Oct 31
€3,419 EUR
$3,820 USD
View
26 more retailers have this diamond
Prices start from €347 EURSave up to €3,072 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
€347 EUR