Marquise|Lab Grown|IGI

1.20ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG823635201

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG823635201

Diamond specifications and retailer prices

From $286 USD
As of October 30, 2026
Save $2,013 USD (88%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $2,299 USD at Queensmith · As of October 27, 2026
View at Queensmith

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 LG823635201 or 823635201. Listed at 23 retailers as of October 27, 2026, with prices from $286 to $2,299, a $2,013 spread on the same certified stone. Queensmith lists it at $2,299. 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 angle33.5°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG823635201
Dimensions11.15 × 5.69 × 3.44 mm
L/W Ratio1.96
Girdle conditionFaceted
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
11.15 mm5.69 mm1.20 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG823635201
Side View
Table 59.0%Crown 33.5°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 60.5%

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: $2,299 USD|Low: $274 USD|High: $2,299 USD|Avg: $908 USD
Queensmith
Retailer 2
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Retailer 23
October 31, 2026
Retailer 6$286 USD
Retailer 14$319 USD
Retailer 4$331 USD
Retailer 10$354 USD
Retailer 16$354 USD
Retailer 20$397 USD
Retailer 13$485 USD
Retailer 19$510 USD
Retailer 21$580 USD
Retailer 18$609 USD
Retailer 2$626 USD
Retailer 12$771 USD
Retailer 22$870 USD
Retailer 3$1,089 USD
Retailer 9$1,139 USD
Retailer 8$1,140 USD
Retailer 11$1,188 USD
Retailer 7$1,260 USD
Retailer 17$1,427 USD
Retailer 15$1,467 USD
Retailer 23$1,470 USD
Retailer 5$1,695 USD
Queensmith$2,299 USD

40 data points across 23 retailers

23 retailers$286 USD to $2,299 USD

A
Cheapest Retailer
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$286 USD
A
Retailer 2
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$319 USD
View
Final sale: no returns
A
Retailer 3
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$331 USD
View
A
Retailer 4
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$354 USD
View
A
Retailer 5
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$354 USD
View
A
Retailer 6
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$397 USD
HK$3,100 HKD
View
A
Retailer 7
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$485 USD
View
A
Retailer 8
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$510 USD
View
A
Retailer 9
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$580 USD
€552 EUR
View
A
Retailer 10
-
$609 USD
ZAR 9,837 ZAR
View
A
Retailer 11
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$626 USD
£493 GBP
View
B+
Retailer 12
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$771 USD
View
B+
Retailer 13
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$870 USD
A$1,339 AUD
View
B+
Retailer 14
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$1,089 USD
View
B+
Retailer 15
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$1,139 USD
View
B+
Retailer 16
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$1,140 USD
SGD 1,540 SGD
View
B+
Retailer 17
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$1,188 USD
View
B
Retailer 18
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$1,260 USD
View
B+
Retailer 19
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$1,427 USD
£1,124 GBP
View
B
Retailer 20
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$1,467 USD
View
B
Retailer 21
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$1,470 USD
View
Retailer 22
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$1,695 USD
A$2,607 AUD
View
Price last confirmed 22 days ago
Most Expensive
B
Queensmith
LG823635201 · Oct 27
$2,299 USD
£1,810 GBP
View
22 more retailers have this diamond
Prices start from $286 USDSave up to $2,013 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
$286 USD