CaratHunter
Plans
Marquise|Lab Grown|IGI

1.31ct D FL Marquise Lab Grown Diamond

ID • D/FL • IGI LG784645166

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG784645166

Diamond specifications and retailer prices

From $308 USD
As of October 30, 2026
Save $2,422 USD (89%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,730 USD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.31ct lab-grown marquise diamond

This 1.31ct lab-grown marquise sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG784645166 or 784645166. Listed at 15 retailers as of October 30, 2026, with prices from $308 to $2,730, a $2,422 spread on the same certified stone. Do Amore Diamonds lists it at $2,730. 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
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG784645166
Dimensions11.09 × 5.73 × 3.59 mm
L/W Ratio1.94
Girdle conditionFaceted
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
11.09 mm5.73 mm1.31 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG784645166
Side View
Table 58.0%Crown 34.6°Girdle: STK-THKPavilion 39.2°Culet: NoneDepth 62.7%

Caratlytics Score

How it works →
A+
Exceptional
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: Oct 30
Current: $2,730 USD|Low: $308 USD|High: $3,430 USD|Avg: $1,216 USD|-11.9%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 1, 2026
Retailer 11$308 USD
Retailer 3$357 USD
Retailer 7$390 USD
Retailer 12$542 USD
Retailer 5$560 USD
Retailer 14$622 USD
Retailer 9$716 USD
Retailer 6$722 USD
Retailer 10$811 USD
Retailer 13$1,172 USD
Retailer 15$1,353 USD
Retailer 2$1,687 USD
Retailer 4$2,255 USD
Retailer 8$2,280 USD
Do Amore Diamonds$2,730 USD

29 data points across 15 retailers

15 retailers$308 USD to $2,730 USD

A+
Cheapest Retailer
-
$308 USD
A
Retailer 2
-
$357 USD
View
A
Retailer 3
-
$390 USD
View
Final sale: no returns
A
Retailer 4
-
$542 USD
View
A
Retailer 5
-
$560 USD
View
A
Retailer 6
-
$622 USD
View
A
Retailer 7
-
$716 USD
€682 EUR
View
A
Retailer 8
-
$722 USD
View
A
Retailer 9
-
$811 USD
A$1,248 AUD
View
B+
Retailer 10
-
$1,172 USD
View
B+
Retailer 11
-
$1,353 USD
View
B+
Retailer 12
-
$1,687 USD
£1,328 GBP
View
B
Retailer 13
-
$2,255 USD
View
B+
Retailer 14
-
$2,280 USD
View
Most Expensive
B
Do Amore Diamonds
27-03DF28AEE · Oct 31
$2,730 USD
View
14 more retailers have this diamond
Prices start from $308 USDSave up to $2,422 USD

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 Marquise
$308 USD