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Marquise|Lab Grown|IGI

1.40ct D IF Marquise Lab Grown Diamond

- • D/IF • IGI LG762545688

Certificate IGI LG762545688

Diamond specifications and retailer prices

From $750 USD
Save $2,730 USD (78%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,480 USD at Brilliant Earth
View at Brilliant Earth

About this 1.4ct lab-grown marquise diamond

This 1.4ct lab-grown marquise 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 standard cut grade and certified by IGI LG762545688 or 762545688. Listed at 15 retailers, with prices from $750 to $3,480 at Brilliant Earth, a $2,730 spread on the same certified stone. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.40
Carat
D
Color
IF
Clarity
-
Cut

Specifications

Cut-
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.7°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG762545688
Dimensions5.79 × 5.79 × 11.44 mm
L/W Ratio1.00
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
5.79 mm5.79 mm1.40 ctD / IF
OriginLab Grown
Cut-
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG762545688
Side View
Table 58.0%Crown 36.7°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 64.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0-100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 1
Current: $3,480 USD|Low: $750 USD|High: $6,075 USD|Avg: $2,176 USD
Brilliant Earth
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
October 1, 2026
Retailer 3$750 USD
Retailer 8$819 USD
Retailer 14$823 USD
Retailer 9$830 USD
Retailer 7$915 USD
Retailer 10$1,009 USD
Retailer 13$1,102 USD
Retailer 15$1,540 USD
Retailer 5$2,127 USD
Retailer 6$2,223 USD
Retailer 2$2,331 USD
Retailer 12$2,425 USD
Retailer 4$2,531 USD
Retailer 11$2,765 USD
Brilliant Earth$3,480 USD

35 data points across 15 retailers

15 retailers$750 USD to $3,480 USD

A
Cheapest Retailer
-
$750 USD
A
Retailer 2
-
$819 USD
HK$6,400 HKD
View
A
Retailer 3
-
$823 USD
View
A
Retailer 4
-
$830 USD
View
A
Retailer 5
-
$991 USD
£780 GBP
View
Price last confirmed 21 days ago
A
Retailer 6
-
$1,009 USD
£794 GBP
View
B+
Retailer 7
-
$1,102 USD
ZAR 17,795 ZAR
View
B+
Retailer 8
-
$1,540 USD
View
B
Retailer 9
-
$2,127 USD
View
B
Retailer 10
-
$2,223 USD
€2,117 EUR
View
Price last confirmed 47 days ago
B
Retailer 11
-
$2,331 USD
A$3,586 AUD
View
B
Retailer 12
-
$2,425 USD
View
B
Retailer 13
-
$2,531 USD
View
Price last confirmed 20 days ago
B
Retailer 14
-
$2,765 USD
£2,177 GBP
View
Most Expensive
B
Brilliant Earth
21476199Y · Oct 1
$3,480 USD
View
14 more retailers have this diamond
Prices start from $750 USDSave up to $2,730 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.

A
1.40ct Marquise
$750 USD