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Marquise|Lab Grown|IGI

1.29ct D FL Marquise Lab Grown Diamond

ID • D/FL • IGI LG800681980

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG800681980

Diamond specifications and retailer prices

From $725 USD
As of October 30, 2026
Save $2,125 USD (75%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $2,850 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.29ct lab-grown marquise diamond

This 1.29ct 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 LG800681980 or 800681980. Listed at 12 retailers as of October 30, 2026, with prices from $725 to $2,850, a $2,125 spread on the same certified stone. Brilliant Earth lists it at $2,850. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.29
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800681980
Dimensions11.19 × 5.70 × 3.61 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
11.19 mm5.70 mm1.29 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800681980
Side View
Table 59.0%Crown 34.2°Girdle: MED-STKPavilion 41.3°Culet: NoneDepth 63.3%

Caratlytics Score

How it works →
A
Excellent
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: $2,850 USD|Low: $725 USD|High: $3,420 USD|Avg: $1,693 USD|-16.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 3$725 USD
Retailer 9$835 USD
Retailer 8$845 USD
Retailer 4$952 USD
Retailer 2$1,033 USD
Retailer 5$1,051 USD
Retailer 12$1,589 USD
Retailer 11$2,112 USD
Retailer 10$2,307 USD
Retailer 7$2,545 USD
Retailer 6$2,821 USD
Brilliant Earth$2,850 USD

40 data points across 12 retailers

12 retailers$725 USD to $2,850 USD

A
Cheapest Retailer
-
$725 USD
A
Retailer 2
-
$835 USD
View
A
Retailer 3
-
$845 USD
HK$6,600 HKD
View
A
Retailer 4
-
$952 USD
View
A
Retailer 5
-
$1,033 USD
€984 EUR
View
A
Retailer 6
-
$1,051 USD
£828 GBP
View
Retailer 7
-
$1,589 USD
View
Price last confirmed 9 days ago
B+
Retailer 8
-
$2,112 USD
View
B
Retailer 9
-
$2,307 USD
View
B
Retailer 10
-
$2,545 USD
View
B
Retailer 11
-
$2,821 USD
£2,221 GBP
View
Most Expensive
B
Brilliant Earth
20869351Y · Oct 31
$2,850 USD
View
11 more retailers have this diamond
Prices start from $725 USDSave up to $2,125 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
1.29ct Marquise
$725 USD