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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 €233 EUR
$260 USD
As of October 30, 2026
Save €2,139 EUR (90%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: €2,372 EUR at Brilliant Earth · As of October 31, 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 October 30, 2026, with prices from €233 to €2,372, a €2,139 spread on the same certified stone. Brilliant Earth lists it at €2,372. 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
Color
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: Oct 30
Current: €2,372 EUR|Low: €233 EUR|High: €2,542 EUR|Avg: €739 EUR|-6.7%
Brilliant Earth
Retailer 2
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Retailer 23
November 1, 2026
Retailer 6€233 EUR
Retailer 9€260 EUR
Retailer 21€269 EUR
Retailer 4€288 EUR
Retailer 10€288 EUR
Retailer 5€321 EUR
Retailer 20€430 EUR
Retailer 13€476 EUR
Retailer 11€481 EUR
Retailer 19€495 EUR
Retailer 8€516 EUR
Retailer 2€551 EUR
Retailer 18€702 EUR
Retailer 3€794 EUR
Retailer 22€886 EUR
Retailer 7€926 EUR
Retailer 15€931 EUR
Retailer 16€973 EUR
Retailer 12€1,119 EUR
Retailer 17€1,162 EUR
Retailer 14€1,239 EUR
Retailer 23€1,651 EUR
Brilliant Earth€2,372 EUR

38 data points across 23 retailers

23 retailers€233 EUR to €2,372 EUR

A
Cheapest Retailer
-
€233 EUR
$260 USD
A
Retailer 2
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€260 EUR
$290 USD
View
Final sale: no returns
A
Retailer 3
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€269 EUR
$301 USD
View
A
Retailer 4
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€288 EUR
$322 USD
View
A
Retailer 5
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€288 EUR
$322 USD
View
A
Retailer 6
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€321 EUR
HK$2,800 HKD
View
A
Retailer 7
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€430 EUR
$480 USD
View
A
Retailer 8
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€476 EUR
View
A
Retailer 9
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€481 EUR
$537 USD
View
A
Retailer 10
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€495 EUR
ZAR 8,940 ZAR
View
A
Retailer 11
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€516 EUR
$577 USD
View
A
Retailer 12
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€551 EUR
£485 GBP
View
A
Retailer 13
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€702 EUR
A$1,206 AUD
View
B+
Retailer 14
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€794 EUR
$887 USD
View
B+
Retailer 15
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€886 EUR
$990 USD
View
B+
Retailer 16
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€926 EUR
$1,035 USD
View
B+
Retailer 17
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€931 EUR
SGD 1,406 SGD
View
B+
Retailer 18
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€973 EUR
$1,087 USD
View
B+
Retailer 19
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€1,119 EUR
£984 GBP
View
B+
Retailer 20
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€1,162 EUR
£1,022 GBP
View
B
Retailer 21
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€1,239 EUR
$1,384 USD
View
Retailer 22
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€1,651 EUR
$1,845 USD
View
Price last confirmed 11 days ago
Most Expensive
B
Brilliant Earth
19067170A · Oct 31
€2,372 EUR
$2,650 USD
View
22 more retailers have this diamond
Prices start from €233 EURSave up to €2,139 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
€233 EUR