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Round|Lab Grown|IGI

1.51ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG823695128

Shape and cutting style on the report: Round brilliant

Certificate IGI LG823695128

Diamond specifications and retailer prices

From €421 EUR
$470 USD
As of October 29, 2026
Save €3,938 EUR (90%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: €4,359 EUR at Brilliant Earth · As of October 29, 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 LG823695128 or 823695128. Listed at 23 retailers as of October 29, 2026, with prices from €421 to €4,359, a €3,938 spread on the same certified stone. Brilliant Earth lists it at €4,359. 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 angle34.7°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG823695128
Dimensions7.34 × 7.37 × 4.51 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
HEARTS & ARROWS 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
7.34 mm7.37 mm1.51 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG823695128
Side View
Table 57.0%Crown 34.7°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: €4,359 EUR|Low: €421 EUR|High: €4,368 EUR|Avg: €1,712 EUR|-0.2%
Brilliant Earth
Retailer 2
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Retailer 21
Retailer 22
October 31, 2026
Retailer 19€421 EUR
Retailer 17€472 EUR
Retailer 4€522 EUR
Retailer 3€732 EUR
Retailer 11€859 EUR
Retailer 8€1,025 EUR
Retailer 9€1,031 EUR
Retailer 13€1,047 EUR
Retailer 18€1,222 EUR
Retailer 2€1,353 EUR
Retailer 21€1,419 EUR
Retailer 5€1,431 EUR
Retailer 22€1,637 EUR
Retailer 6€2,047 EUR
Retailer 15€2,341 EUR
Retailer 16€2,504 EUR
Retailer 14€2,638 EUR
Retailer 7€2,947 EUR
Retailer 12€2,993 EUR
Retailer 10€3,088 EUR
Retailer 20€3,356 EUR
Brilliant Earth€4,359 EUR

22 data points across 22 retailers

23 retailers€421 EUR to €4,359 EUR

A
Cheapest Retailer
-
€421 EUR
$470 USD
A
Retailer 2
-
€472 EUR
$527 USD
View
A
Retailer 3
-
€522 EUR
$583 USD
View
A
Retailer 4
-
€732 EUR
$818 USD
View
A
Retailer 5
-
€859 EUR
$960 USD
View
Final sale: no returns
Retailer 6
-
€909 EUR
$1,016 USD
View
Price last confirmed 15 days ago
B+
Retailer 7
-
€1,025 EUR
$1,145 USD
View
B+
Retailer 8
-
€1,031 EUR
HK$9,000 HKD
View
B+
Retailer 9
-
€1,047 EUR
$1,170 USD
View
B+
Retailer 10
-
€1,222 EUR
£1,075 GBP
View
B+
Retailer 11
-
€1,353 EUR
£1,190 GBP
View
B+
Retailer 12
-
€1,419 EUR
View
B+
Retailer 13
-
€1,431 EUR
$1,599 USD
View
B+
Retailer 14
-
€1,637 EUR
ZAR 29,541 ZAR
View
B
Retailer 15
-
€2,047 EUR
$2,287 USD
View
Retailer 16
-
€2,341 EUR
$2,615 USD
View
Price last confirmed 11 days ago
B
Retailer 17
-
€2,504 EUR
$2,797 USD
View
B
Retailer 18
-
€2,638 EUR
$2,947 USD
View
B
Retailer 19
-
€2,947 EUR
$3,292 USD
View
B
Retailer 20
-
€2,993 EUR
SGD 4,519 SGD
View
B
Retailer 21
-
€3,088 EUR
$3,450 USD
View
B
Retailer 22
-
€3,356 EUR
£2,952 GBP
View
Most Expensive
B
Brilliant Earth
21547131A · Oct 29
€4,359 EUR
$4,870 USD
View
22 more retailers have this diamond
Prices start from €421 EURSave up to €3,938 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
€421 EUR