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Marquise|Lab Grown|IGI

1.61ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG817610778

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG817610778

Diamond specifications and retailer prices

From $638 USD
As of November 1, 2026
Save $3,012 USD (83%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $3,650 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.61ct lab-grown marquise diamond

This 1.61ct lab-grown marquise sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG817610778 or 817610778. Listed at 19 retailers as of October 31, 2026, with prices from $638 to $3,650, a $3,012 spread on the same certified stone. Brilliant Earth lists it at $3,650. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.61
Carat
D
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.8°
Pavilion angle38.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817610778
Dimensions11.81 × 6.07 × 3.74 mm
L/W Ratio1.95
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.81 mm6.07 mm1.61 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817610778
Side View
Table 58.0%Crown 38.8°Girdle: STK-THKPavilion 38.3°Culet: NoneDepth 61.6%

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: $3,650 USD|Low: $638 USD|High: $3,770 USD|Avg: $1,615 USD|-3.2%
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 1, 2026
Retailer 2$638 USD
Retailer 3$640 USD
Retailer 14$840 USD
Retailer 12$952 USD
Retailer 15$1,002 USD
Retailer 9$1,040 USD
Retailer 13$1,108 USD
Retailer 17$1,225 USD
Retailer 8$1,230 USD
Retailer 6$1,660 USD
Retailer 5$1,769 USD
Retailer 11$2,088 USD
Retailer 7$2,168 USD
Retailer 4$2,244 USD
Retailer 18$2,299 USD
Retailer 16$2,344 USD
Retailer 10$3,124 USD
Retailer 19$3,611 USD
Brilliant Earth$3,650 USD

18 data points across 19 retailers

19 retailers$638 USD to $3,650 USD

A
Cheapest Retailer
-
$638 USD
A
Retailer 2
-
$640 USD
View
Final sale: no returns
A
Retailer 3
-
$840 USD
View
A
Retailer 4
-
$952 USD
View
A
Retailer 5
-
$1,002 USD
View
A
Retailer 6
-
$1,040 USD
€990 EUR
View
A
Retailer 7
-
$1,108 USD
£873 GBP
View
A
Retailer 8
-
$1,225 USD
View
A
Retailer 9
-
$1,230 USD
ZAR 19,873 ZAR
View
A
Retailer 10
-
$1,660 USD
A$2,554 AUD
View
B+
Retailer 11
-
$1,769 USD
View
B+
Retailer 12
-
$2,088 USD
£1,644 GBP
View
B+
Retailer 13
-
$2,168 USD
View
B+
Retailer 14
-
$2,244 USD
SGD 3,033 SGD
View
B+
Retailer 15
-
$2,299 USD
View
B+
Retailer 16
-
$2,344 USD
View
B+
Retailer 17
-
$3,124 USD
£2,460 GBP
View
B
Retailer 18
-
$3,611 USD
A$5,555 AUD
View
Most Expensive
B
Brilliant Earth
20772153A · Oct 31
$3,650 USD
View
18 more retailers have this diamond
Prices start from $638 USDSave up to $3,012 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
1.61ct Marquise
$638 USD