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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 €1,097 EUR
$1,226 USD
As of November 2, 2026
Save €3,225 EUR (75%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €4,322 EUR 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 €1,097 to €4,322, a €3,225 spread on the same certified stone. Taylor and Hart lists it at €4,322. 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
Color
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: €1,765 EUR|Low: €1,097 EUR|High: €4,275 EUR|Avg: €2,403 EUR|-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€1,097 EUR
Retailer 2€1,290 EUR
Retailer 1€1,765 EUR
Retailer 11€1,773 EUR
Retailer 12€1,837 EUR
Retailer 9€1,959 EUR
Retailer 5€2,076 EUR
Retailer 10€2,237 EUR
Retailer 4€3,155 EUR
Retailer 13€3,417 EUR
Retailer 8€3,500 EUR
Retailer 6€3,909 EUR
Retailer 7€4,211 EUR

36 data points across 13 retailers

14 retailers€1,097 EUR to €4,322 EUR

A
Cheapest Retailer
-
€1,097 EUR
$1,226 USD
A
Retailer 2
-
€1,290 EUR
$1,441 USD
View
A
Retailer 3
-
€1,547 EUR
HK$13,500 HKD
View
A
Retailer 4
-
€1,765 EUR
£1,553 GBP
View
B+
Retailer 5
-
€1,773 EUR
A$3,048 AUD
View
B+
Retailer 6
-
€1,837 EUR
$2,052 USD
View
B+
Retailer 7
-
€1,959 EUR
View
B+
Retailer 8
-
€2,237 EUR
ZAR 40,374 ZAR
View
Retailer 9
-
€3,155 EUR
$3,524 USD
View
Price last confirmed 18 days ago
B
Retailer 10
-
€3,417 EUR
$3,818 USD
View
B+
Retailer 11
-
€3,500 EUR
$3,910 USD
View
B
Retailer 12
-
€3,909 EUR
£3,439 GBP
View
B
Retailer 13
-
€4,211 EUR
A$7,238 AUD
View
Most Expensive
B
Taylor and Hart
13F30F8 · Oct 31
€4,322 EUR
$4,829 USD
View
13 more retailers have this diamond
Prices start from €1,097 EURSave up to €3,225 EUR

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
€1,097 EUR