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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 €458 EUR
$514 USD
As of November 3, 2026
Save €3,884 EUR (89%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: €4,342 EUR at Brilliant Earth · As of November 2, 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 November 2, 2026, with prices from €458 to €4,342, a €3,884 spread on the same certified stone. Brilliant Earth lists it at €4,342. 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
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: Nov 3
Current: €4,342 EUR|Low: €419 EUR|High: €4,351 EUR|Avg: €1,734 EUR|-0.2%
Brilliant Earth
Retailer 2
Retailer 3
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Retailer 6
Retailer 7
Retailer 8
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Retailer 11
Retailer 12
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Retailer 17
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Retailer 19
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Retailer 21
Retailer 22
November 3, 2026
Retailer 16€458 EUR
Retailer 17€507 EUR
Retailer 4€729 EUR
Retailer 20€765 EUR
Retailer 11€856 EUR
Retailer 8€1,021 EUR
Retailer 9€1,027 EUR
Retailer 21€1,043 EUR
Retailer 19€1,214 EUR
Retailer 2€1,359 EUR
Retailer 18€1,415 EUR
Retailer 5€1,426 EUR
Retailer 3€1,630 EUR
Retailer 6€2,039 EUR
Retailer 15€2,331 EUR
Retailer 22€2,494 EUR
Retailer 14€2,627 EUR
Retailer 7€2,935 EUR
Retailer 12€2,981 EUR
Retailer 10€3,076 EUR
Retailer 13€3,324 EUR
Brilliant Earth€4,342 EUR

22 data points across 22 retailers

23 retailers€458 EUR to €4,342 EUR

A
Cheapest Retailer
-
€458 EUR
$514 USD
A
Retailer 2
-
€507 EUR
$569 USD
View
A
Retailer 3
-
€729 EUR
$818 USD
View
A
Retailer 4
-
€765 EUR
$858 USD
View
A
Retailer 5
-
€856 EUR
$960 USD
View
Final sale: no returns
Retailer 6
-
€906 EUR
$1,016 USD
View
Price last confirmed 16 days ago
B+
Retailer 7
-
€1,021 EUR
$1,145 USD
View
B+
Retailer 8
-
€1,027 EUR
HK$9,000 HKD
View
B+
Retailer 9
-
€1,043 EUR
$1,170 USD
View
B+
Retailer 10
-
€1,214 EUR
£1,072 GBP
View
B+
Retailer 11
-
€1,359 EUR
£1,200 GBP
View
B+
Retailer 12
-
€1,415 EUR
View
B+
Retailer 13
-
€1,426 EUR
$1,599 USD
View
B+
Retailer 14
-
€1,630 EUR
ZAR 29,541 ZAR
View
B
Retailer 15
-
€2,039 EUR
$2,287 USD
View
B
Retailer 16
-
€2,331 EUR
$2,615 USD
View
B
Retailer 17
-
€2,494 EUR
$2,797 USD
View
B
Retailer 18
-
€2,627 EUR
$2,947 USD
View
B
Retailer 19
-
€2,935 EUR
$3,292 USD
View
B
Retailer 20
-
€2,981 EUR
SGD 4,519 SGD
View
B
Retailer 21
-
€3,076 EUR
$3,450 USD
View
B
Retailer 22
-
€3,324 EUR
£2,936 GBP
View
Most Expensive
B
Brilliant Earth
21547131A · Nov 2
€4,342 EUR
$4,870 USD
View
22 more retailers have this diamond
Prices start from €458 EURSave up to €3,884 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
€458 EUR