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Marquise|Lab Grown|IGI

1.20ct D IF Marquise Lab Grown Diamond

ID • D/IF • IGI LG727560723

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG727560723

Diamond specifications and retailer prices

From $491 USD
As of November 1, 2026
Save $1,899 USD (79%) vs most expensive(unlock to see where)
30 retailers carry this diamond
Most expensive: $2,390 USD at Brilliant Earth · As of October 31, 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 LG727560723 or 727560723. Listed at 30 retailers as of October 31, 2026, with prices from $491 to $2,390, a $1,899 spread on the same certified stone. Brilliant Earth lists it at $2,390. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle39.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG727560723
Dimensions10.87 × 5.57 × 3.47 mm
L/W Ratio1.95
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
10.87 mm5.57 mm1.20 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG727560723
Side View
Table 59.0%Crown 35.3°Girdle: STK-THKPavilion 39.7°Culet: NoneDepth 62.3%

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: Nov 1
Current: $2,390 USD|Low: $270 USD|High: $2,640 USD|Avg: $1,206 USD|-9.5%
Brilliant Earth
Retailer 2
Retailer 3
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Retailer 6
Retailer 7
Retailer 8
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Retailer 11
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Retailer 13
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Retailer 22
Retailer 23
November 1, 2026
Retailer 14$270 USD
Retailer 20$491 USD
Retailer 12$545 USD
Retailer 21$615 USD
Retailer 3$627 USD
Retailer 8$770 USD
Retailer 4$771 USD
Retailer 7$823 USD
Retailer 18$874 USD
Retailer 13$900 USD
Retailer 19$936 USD
Retailer 16$1,026 USD
Retailer 6$1,267 USD
Retailer 17$1,327 USD
Retailer 23$1,464 USD
Retailer 22$1,525 USD
Retailer 5$1,784 USD
Retailer 15$1,809 USD
Retailer 10$1,820 USD
Retailer 9$1,957 USD
Retailer 2$2,002 USD
Retailer 11$2,125 USD
Brilliant Earth$2,390 USD

32 data points across 23 retailers

30 retailers$491 USD to $2,390 USD

Retailer 1
-
$270 USD
Price last confirmed 24 days ago
Retailer 2
-
$456 USD
View
Price last confirmed 32 days ago
A
Retailer 3
-
$491 USD
View
Final sale: no returns
Retailer 4
-
$511 USD
View
Price last confirmed 33 days ago
Retailer 5
-
$545 USD
View
Price last confirmed 24 days ago
Retailer 6
-
$545 USD
View
Price last confirmed 22 days ago
Retailer 7
-
$559 USD
View
Price last confirmed 33 days ago
A
Retailer 8
-
$615 USD
View
A
Retailer 9
-
$627 USD
HK$4,900 HKD
View
B+
Retailer 10
-
$770 USD
View
B+
Retailer 11
-
$771 USD
View
B+
Retailer 12
-
$823 USD
View
B+
Retailer 13
-
$874 USD
€832 EUR
View
B+
Retailer 14
-
$900 USD
£709 GBP
View
B+
Retailer 15
-
$936 USD
ZAR 15,122 ZAR
View
B+
Retailer 16
-
$1,026 USD
A$1,578 AUD
View
Retailer 17
-
$1,267 USD
View
Price last confirmed 8 days ago
B+
Retailer 18
-
$1,327 USD
A$2,042 AUD
View
B
Retailer 19
-
$1,464 USD
View
B+
Retailer 20
-
$1,525 USD
View
B
Retailer 21
-
$1,751 USD
View
Retailer 22
-
$1,751 USD
View
Price last confirmed 22 days ago
B
Retailer 23
-
$1,784 USD
View
Retailer 24
-
$1,809 USD
A$2,783 AUD
View
Price last confirmed 29 days ago
Retailer 25
-
$1,819 USD
View
Price last confirmed 32 days ago
B
Retailer 26
-
$1,820 USD
SGD 2,460 SGD
View
B
Retailer 27
-
$1,957 USD
View
B
Retailer 28
-
$2,002 USD
£1,576 GBP
View
B
Retailer 29
-
$2,125 USD
View
Most Expensive
B
Brilliant Earth
15743657A · Oct 31
$2,390 USD
View
29 more retailers have this diamond
Prices start from $491 USDSave up to $1,899 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
$491 USD