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Radiant|Lab Grown|IGI

1.31ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG780636936

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG780636936

Diamond specifications and retailer prices

From €231 EUR
As of November 4, 2026
Save €2,121 EUR (90%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: €2,352 EUR at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.31ct lab-grown radiant diamond

This 1.31ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG780636936 or 780636936. Listed at 23 retailers as of November 4, 2026, with prices from €231 to €2,352, a €2,121 spread on the same certified stone. Brilliant Earth lists it at €2,352. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.31
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.4°
Pavilion angle34.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780636936
Dimensions7.78 × 5.35 × 3.60 mm
L/W Ratio1.45
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
7.78 mm5.35 mm1.31 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780636936
Side View
Table 63.0%Crown 46.4°Girdle: Slightly ThickPavilion 34.3°Culet: NoneDepth 67.3%

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 4
Current: €2,352 EUR|Low: €231 EUR|High: €2,521 EUR|Avg: €756 EUR|-6.7%
Brilliant Earth
Retailer 2
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Retailer 23
November 5, 2026
Retailer 6€231 EUR
Retailer 9€257 EUR
Retailer 21€267 EUR
Retailer 4€286 EUR
Retailer 10€286 EUR
Retailer 5€318 EUR
Retailer 20€426 EUR
Retailer 18€471 EUR
Retailer 11€477 EUR
Retailer 17€493 EUR
Retailer 8€512 EUR
Retailer 2€541 EUR
Retailer 13€701 EUR
Retailer 3€787 EUR
Retailer 22€879 EUR
Retailer 7€919 EUR
Retailer 15€923 EUR
Retailer 16€964 EUR
Retailer 12€1,109 EUR
Retailer 19€1,151 EUR
Retailer 14€1,228 EUR
Retailer 23€1,638 EUR
Brilliant Earth€2,352 EUR

41 data points across 23 retailers

23 retailers€231 EUR to €2,352 EUR

A
Cheapest Retailer
-
€231 EUR
A
Retailer 2
-
€257 EUR
View
Final sale: no returns
A
Retailer 3
-
€267 EUR
View
Retailer 4
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€286 EUR
View
Price last confirmed 11 days ago
A
Retailer 5
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€286 EUR
View
A
Retailer 6
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€318 EUR
View
A
Retailer 7
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€426 EUR
View
A
Retailer 8
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€471 EUR
View
A
Retailer 9
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€477 EUR
View
A
Retailer 10
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€493 EUR
View
A
Retailer 11
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€512 EUR
View
A
Retailer 12
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€541 EUR
View
A
Retailer 13
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€701 EUR
View
B+
Retailer 14
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€787 EUR
View
B+
Retailer 15
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€879 EUR
View
B+
Retailer 16
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€919 EUR
View
B+
Retailer 17
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€923 EUR
View
B+
Retailer 18
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€964 EUR
View
B+
Retailer 19
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€1,109 EUR
View
Retailer 20
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€1,151 EUR
View
Price last confirmed 7 days ago
B
Retailer 21
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€1,228 EUR
View
Retailer 22
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€1,638 EUR
View
Price last confirmed 15 days ago
Most Expensive
B
Brilliant Earth
19067170A · Nov 4
€2,352 EUR
$2,650 USD
View
22 more retailers have this diamond
Prices start from €231 EURSave up to €2,121 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
1.31ct Radiant
€231 EUR