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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 HK$9,619 HKD
$1,226 USD
As of November 2, 2026
Save HK$28,268 HKD (75%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$37,888 HKD 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 HK$9,619 to HK$37,888, a HK$28,268 spread on the same certified stone. Taylor and Hart lists it at HK$37,888. 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

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: Nov 2
Current: HK$15,474 HKD|Low: HK$9,619 HKD|High: HK$37,475 HKD|Avg: HK$21,143 HKD|-1.1%
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 3HK$9,619 HKD
Retailer 2HK$11,306 HKD
Retailer 1HK$15,474 HKD
Retailer 11HK$15,545 HKD
Retailer 12HK$16,100 HKD
Retailer 9HK$17,169 HKD
Retailer 5HK$18,197 HKD
Retailer 10HK$19,609 HKD
Retailer 4HK$27,653 HKD
Retailer 13HK$29,956 HKD
Retailer 8HK$30,678 HKD
Retailer 6HK$34,268 HKD
Retailer 7HK$36,914 HKD

35 data points across 13 retailers

14 retailersHK$9,619 HKD to HK$37,888 HKD

A
Cheapest Retailer
-
HK$9,619 HKD
$1,226 USD
A
Retailer 2
-
HK$11,306 HKD
$1,441 USD
View
A
Retailer 3
-
HK$13,558 HKD
View
A
Retailer 4
-
HK$15,474 HKD
£1,553 GBP
View
B+
Retailer 5
-
HK$15,545 HKD
A$3,048 AUD
View
B+
Retailer 6
-
HK$16,100 HKD
$2,052 USD
View
B+
Retailer 7
-
HK$17,169 HKD
€2,084 EUR
View
B+
Retailer 8
-
HK$19,609 HKD
ZAR 40,374 ZAR
View
Retailer 9
-
HK$27,653 HKD
$3,524 USD
View
Price last confirmed 18 days ago
B
Retailer 10
-
HK$29,956 HKD
$3,818 USD
View
B+
Retailer 11
-
HK$30,678 HKD
$3,910 USD
View
B
Retailer 12
-
HK$34,268 HKD
£3,439 GBP
View
B
Retailer 13
-
HK$36,914 HKD
A$7,238 AUD
View
Most Expensive
B
Taylor and Hart
13F30F8 · Oct 31
HK$37,888 HKD
$4,829 USD
View
13 more retailers have this diamond
Prices start from HK$9,619 HKDSave up to HK$28,268 HKD

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
HK$9,619 HKD