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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 $332 SGD
$260 USD
As of October 30, 2026
Save $3,055 SGD (90%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $3,388 SGD at Brilliant Earth · As of October 30, 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 $332 to $3,388, a $3,055 spread on the same certified stone. Brilliant Earth lists it at $3,388. 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: Oct 30
Current: $3,388 SGD|Low: $332 SGD|High: $3,631 SGD|Avg: $1,054 SGD|-6.7%
Brilliant Earth
Retailer 2
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Retailer 23
October 31, 2026
Retailer 6$332 SGD
Retailer 9$371 SGD
Retailer 21$385 SGD
Retailer 4$412 SGD
Retailer 10$412 SGD
Retailer 5$458 SGD
Retailer 20$614 SGD
Retailer 2$679 SGD
Retailer 11$687 SGD
Retailer 19$707 SGD
Retailer 8$738 SGD
Retailer 13$787 SGD
Retailer 18$1,002 SGD
Retailer 3$1,134 SGD
Retailer 22$1,266 SGD
Retailer 7$1,323 SGD
Retailer 15$1,330 SGD
Retailer 16$1,389 SGD
Retailer 12$1,598 SGD
Retailer 17$1,659 SGD
Retailer 14$1,770 SGD
Retailer 23$2,359 SGD
Brilliant Earth$3,388 SGD

38 data points across 23 retailers

23 retailers$332 SGD to $3,388 SGD

A
Cheapest Retailer
-
$332 SGD
$260 USD
A
Retailer 2
-
$371 SGD
$290 USD
View
Final sale: no returns
A
Retailer 3
-
$385 SGD
$301 USD
View
A
Retailer 4
-
$412 SGD
$322 USD
View
A
Retailer 5
-
$412 SGD
$322 USD
View
A
Retailer 6
-
$458 SGD
HK$2,800 HKD
View
A
Retailer 7
-
$614 SGD
$480 USD
View
A
Retailer 8
-
$679 SGD
€506 EUR
View
A
Retailer 9
-
$687 SGD
$537 USD
View
A
Retailer 10
-
$707 SGD
ZAR 8,940 ZAR
View
A
Retailer 11
-
$738 SGD
$577 USD
View
A
Retailer 12
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$787 SGD
£485 GBP
View
A
Retailer 13
-
$1,002 SGD
A$1,206 AUD
View
B+
Retailer 14
-
$1,134 SGD
$887 USD
View
B+
Retailer 15
-
$1,266 SGD
$990 USD
View
B+
Retailer 16
-
$1,323 SGD
$1,035 USD
View
B+
Retailer 17
-
$1,330 SGD
View
B+
Retailer 18
-
$1,389 SGD
$1,087 USD
View
B+
Retailer 19
-
$1,598 SGD
£984 GBP
View
B+
Retailer 20
-
$1,659 SGD
£1,022 GBP
View
B
Retailer 21
-
$1,770 SGD
$1,384 USD
View
Retailer 22
-
$2,359 SGD
$1,845 USD
View
Price last confirmed 10 days ago
Most Expensive
B
Brilliant Earth
19067170A · Oct 30
$3,388 SGD
$2,650 USD
View
22 more retailers have this diamond
Prices start from $332 SGDSave up to $3,055 SGD

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
$332 SGD