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Round|Lab Grown|IGI

1.51ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG780685531

Shape and cutting style on the report: Round brilliant

Certificate IGI LG780685531

Diamond specifications and retailer prices

From €658 EUR
$735 USD
As of October 31, 2026
Save €2,681 EUR (80%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: €3,339 EUR at Brilliant Earth · As of October 30, 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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG780685531 or 780685531. Listed at 22 retailers as of October 30, 2026, with prices from €658 to €3,339, a €2,681 spread on the same certified stone. Brilliant Earth lists it at €3,339. 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
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780685531
Dimensions7.40 × 7.46 × 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
7.40 mm7.46 mm1.51 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780685531
Side View
Table 55.0%Crown 32.9°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.9%

Caratlytics Score

How it works →
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 31
Current: €3,339 EUR|Low: €565 EUR|High: €4,350 EUR|Avg: €1,697 EUR|-23.3%
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
October 31, 2026
Retailer 3€588 EUR
Retailer 4€658 EUR
Retailer 7€682 EUR
Retailer 9€936 EUR
Retailer 10€967 EUR
Retailer 6€976 EUR
Retailer 13€1,052 EUR
Retailer 8€1,087 EUR
Retailer 12€1,242 EUR
Retailer 14€1,584 EUR
Retailer 15€2,197 EUR
Retailer 5€2,374 EUR
Retailer 11€2,878 EUR
Retailer 2€3,212 EUR
Brilliant Earth€3,339 EUR

36 data points across 15 retailers

22 retailers€658 EUR to €3,339 EUR

Retailer 1
-
€588 EUR
$657 USD
Price last confirmed 21 days ago
Retailer 2
-
€640 EUR
$715 USD
View
Price last confirmed 18 days ago
A
Retailer 3
-
€658 EUR
$735 USD
View
Final sale: no returns
Retailer 4
-
€682 EUR
$762 USD
View
Price last confirmed 19 days ago
Retailer 5
-
€682 EUR
$762 USD
View
Price last confirmed 29 days ago
B+
Retailer 6
-
€900 EUR
$1,005 USD
View
A
Retailer 7
-
€936 EUR
£824 GBP
View
B+
Retailer 8
-
€963 EUR
$1,076 USD
View
B+
Retailer 9
-
€967 EUR
$1,080 USD
View
B+
Retailer 10
-
€976 EUR
$1,090 USD
View
B+
Retailer 11
-
€1,052 EUR
A$1,808 AUD
View
B+
Retailer 12
-
€1,087 EUR
£956 GBP
View
Retailer 13
-
€1,242 EUR
ZAR 22,422 ZAR
View
Price last confirmed 8 days ago
B
Retailer 14
-
€1,584 EUR
$1,770 USD
View
Retailer 15
-
€1,918 EUR
$2,143 USD
View
Price last confirmed 24 days ago
B
Retailer 16
-
€2,197 EUR
$2,455 USD
View
B
Retailer 17
-
€2,296 EUR
SGD 3,466 SGD
View
B
Retailer 18
-
€2,354 EUR
$2,630 USD
View
B
Retailer 19
-
€2,374 EUR
$2,652 USD
View
B
Retailer 20
-
€2,878 EUR
£2,532 GBP
View
B
Retailer 21
-
€3,212 EUR
View
Most Expensive
B
Brilliant Earth
18647900A · Oct 30
€3,339 EUR
$3,730 USD
View
21 more retailers have this diamond
Prices start from €658 EURSave up to €2,681 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
€658 EUR