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Round|Lab Grown|IGI

1.51ct D SI1 Round Lab Grown Diamond

EX • D/SI1 • IGI LG770669393

Shape and cutting style on the report: Round brilliant

Certificate IGI LG770669393

Diamond specifications and retailer prices

From €199 EUR
As of November 5, 2026
Save €888 EUR (82%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €1,087 EUR at Brilliant Earth · As of November 5, 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG770669393 or 770669393. Listed at 15 retailers as of November 5, 2026, with prices from €199 to €1,087, a €888 spread on the same certified stone. Brilliant Earth lists it at €1,087. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle41.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG770669393
Dimensions7.35 × 7.30 × 4.56 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.35 mm7.30 mm1.51 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG770669393
Side View
Table 60.0%Crown 34.8°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.2%

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: Nov 5
Current: €1,087 EUR|Low: €191 EUR|High: €1,087 EUR|Avg: €551 EUR|+0.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 9€199 EUR
Retailer 10€246 EUR
Retailer 8€330 EUR
Retailer 3€380 EUR
Retailer 2€413 EUR
Retailer 4€452 EUR
Retailer 5€673 EUR
Retailer 6€682 EUR
Retailer 7€986 EUR
Brilliant Earth€1,087 EUR

43 data points across 10 retailers

15 retailers€199 EUR to €1,087 EUR

A
Cheapest Retailer
-
€199 EUR
A
Retailer 2
-
€230 EUR
View
Retailer 3
-
€246 EUR
View
Price last confirmed 12 days ago
A
Retailer 4
-
€246 EUR
View
B+
Retailer 5
-
€330 EUR
View
A
Retailer 6
-
€380 EUR
View
A
Retailer 7
-
€398 EUR
View
A
Retailer 8
-
€413 EUR
View
A
Retailer 9
-
€452 EUR
View
B+
Retailer 10
-
€538 EUR
View
B
Retailer 11
-
€673 EUR
View
B+
Retailer 12
-
€682 EUR
View
B
Retailer 13
-
€790 EUR
View
Retailer 14
-
€986 EUR
View
Price last confirmed 12 days ago
Most Expensive
B
Brilliant Earth
20482981A · Nov 5
€1,087 EUR
$1,220 USD
View
14 more retailers have this diamond
Prices start from €199 EURSave up to €888 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
€199 EUR