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Marquise|Lab Grown|IGI

1.20ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG799676768

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG799676768

Diamond specifications and retailer prices

From $518 USD
As of October 30, 2026
Save $2,412 USD (82%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $2,930 USD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.2ct lab-grown marquise diamond

This 1.2ct lab-grown marquise sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG799676768 or 799676768. Listed at 23 retailers as of October 30, 2026, with prices from $518 to $2,930, a $2,412 spread on the same certified stone. Brilliant Earth lists it at $2,930. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.20
Carat
D
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799676768
Dimensions11.25 × 5.53 × 3.39 mm
L/W Ratio2.03
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
11.25 mm5.53 mm1.20 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG799676768
Side View
Table 58.0%Crown 33.3°Girdle: MED-STKPavilion 39.8°Culet: NoneDepth 61.3%

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: $2,930 USD|Low: $518 USD|High: $3,282 USD|Avg: $1,427 USD
Brilliant Earth
Retailer 2
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Retailer 22
October 31, 2026
Retailer 15$518 USD
Retailer 6$580 USD
Retailer 10$580 USD
Retailer 5$643 USD
Retailer 21$704 USD
Retailer 18$780 USD
Retailer 4$850 USD
Retailer 9$850 USD
Retailer 19$978 USD
Retailer 2$987 USD
Retailer 11$997 USD
Retailer 17$1,104 USD
Retailer 13$1,567 USD
Retailer 20$1,575 USD
Retailer 3$1,658 USD
Retailer 22$1,690 USD
Retailer 8$1,875 USD
Retailer 14$2,036 USD
Retailer 7$2,090 USD
Retailer 12$2,209 USD
Retailer 16$2,697 USD
Brilliant Earth$2,930 USD

39 data points across 22 retailers

23 retailers$518 USD to $2,930 USD

A
Cheapest Retailer
-
$518 USD
A
Retailer 2
-
$580 USD
View
Final sale: no returns
A
Retailer 3
-
$580 USD
View
Retailer 4
-
$643 USD
View
Price last confirmed 15 days ago
A
Retailer 5
-
$643 USD
View
A
Retailer 6
-
$704 USD
HK$5,500 HKD
View
B+
Retailer 7
-
$780 USD
View
B+
Retailer 8
-
$850 USD
View
B+
Retailer 9
-
$850 USD
View
B+
Retailer 10
-
$978 USD
€931 EUR
View
B+
Retailer 11
-
$987 USD
£778 GBP
View
B+
Retailer 12
-
$997 USD
View
B+
Retailer 13
-
$1,104 USD
ZAR 17,841 ZAR
View
B
Retailer 14
-
$1,567 USD
A$2,410 AUD
View
B+
Retailer 15
-
$1,575 USD
View
B
Retailer 16
-
$1,658 USD
View
B+
Retailer 17
-
$1,690 USD
View
B
Retailer 18
-
$1,875 USD
£1,476 GBP
View
B
Retailer 19
-
$2,036 USD
SGD 2,751 SGD
View
B
Retailer 20
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$2,090 USD
View
B
Retailer 21
-
$2,209 USD
View
B
Retailer 22
-
$2,697 USD
£2,124 GBP
View
Most Expensive
B
Brilliant Earth
19804118A · Oct 30
$2,930 USD
View
22 more retailers have this diamond
Prices start from $518 USDSave up to $2,412 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
1.20ct Marquise
$518 USD