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Marquise|Lab Grown|IGI

1.78ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG762545210

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG762545210

Diamond specifications and retailer prices

From $1,568 SGD
$1,226 USD
As of November 2, 2026
Save $4,608 SGD (75%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $6,176 SGD at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 1.78ct lab-grown marquise diamond

This 1.78ct 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 LG762545210 or 762545210. Listed at 14 retailers as of October 31, 2026, with prices from $1,568 to $6,176, a $4,608 spread on the same certified stone. Taylor and Hart lists it at $6,176. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.78
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG762545210
Dimensions12.52 × 6.38 × 3.89 mm
L/W Ratio1.96
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
12.52 mm6.38 mm1.78 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG762545210
Side View
Table 59.0%Crown 33.6°Girdle: STK-THKPavilion 39.6°Culet: NoneDepth 61.0%

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 2
Current: $2,522 SGD|Low: $1,568 SGD|High: $6,108 SGD|Avg: $3,434 SGD|-1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 2, 2026
Retailer 3$1,568 SGD
Retailer 2$1,843 SGD
Retailer 1$2,522 SGD
Retailer 11$2,534 SGD
Retailer 12$2,624 SGD
Retailer 9$2,798 SGD
Retailer 5$2,966 SGD
Retailer 10$3,196 SGD
Retailer 4$4,507 SGD
Retailer 13$4,883 SGD
Retailer 8$5,000 SGD
Retailer 6$5,586 SGD
Retailer 7$6,017 SGD

36 data points across 13 retailers

14 retailers$1,568 SGD to $6,176 SGD

A
Cheapest Retailer
-
$1,568 SGD
$1,226 USD
A
Retailer 2
-
$1,843 SGD
$1,441 USD
View
A
Retailer 3
-
$2,210 SGD
HK$13,500 HKD
View
A
Retailer 4
-
$2,522 SGD
£1,553 GBP
View
B+
Retailer 5
-
$2,534 SGD
A$3,048 AUD
View
B+
Retailer 6
-
$2,624 SGD
$2,052 USD
View
B+
Retailer 7
-
$2,798 SGD
€2,084 EUR
View
B+
Retailer 8
-
$3,196 SGD
ZAR 40,374 ZAR
View
Retailer 9
-
$4,507 SGD
$3,524 USD
View
Price last confirmed 18 days ago
B
Retailer 10
-
$4,883 SGD
$3,818 USD
View
B+
Retailer 11
-
$5,000 SGD
$3,910 USD
View
B
Retailer 12
-
$5,586 SGD
£3,439 GBP
View
B
Retailer 13
-
$6,017 SGD
A$7,238 AUD
View
Most Expensive
B
Taylor and Hart
13F30F8 · Oct 31
$6,176 SGD
$4,829 USD
View
13 more retailers have this diamond
Prices start from $1,568 SGDSave up to $4,608 SGD

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
1.78ct Marquise
$1,568 SGD