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Marquise|Lab Grown|IGI

1.78ct D IF Marquise Lab Grown Diamond

ID • D/IF • IGI LG800681940

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG800681940

Diamond specifications and retailer prices

From HK$12,240 HKD
$1,560 USD
As of November 2, 2026
Save HK$42,212 HKD (78%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$54,452 HKD at With Clarity · As of November 2, 2026
View at With Clarity

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 LG800681940 or 800681940. Listed at 12 retailers as of November 2, 2026, with prices from HK$12,240 to HK$54,452, a HK$42,212 spread on the same certified stone. With Clarity lists it at HK$54,452. 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
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800681940
Dimensions12.40 × 6.31 × 4.05 mm
L/W Ratio1.97
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
12.40 mm6.31 mm1.78 ctD / IF
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800681940
Side View
Table 60.0%Crown 35.1°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 64.2%

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$11,699 HKD|High: HK$53,361 HKD|Avg: HK$25,141 HKD|-1.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
With Clarity
November 2, 2026
Retailer 7HK$12,240 HKD
Retailer 8HK$12,970 HKD
Retailer 1HK$15,474 HKD
Retailer 5HK$16,100 HKD
Retailer 2HK$17,169 HKD
Retailer 4HK$19,066 HKD
Retailer 9HK$27,653 HKD
Retailer 3HK$34,457 HKD
Retailer 6HK$40,957 HKD
With ClarityHK$53,361 HKD

40 data points across 10 retailers

12 retailersHK$12,240 HKD to HK$54,452 HKD

A
Cheapest Retailer
-
HK$12,240 HKD
$1,560 USD
A
Retailer 2
-
HK$12,970 HKD
$1,653 USD
View
A
Retailer 3
-
HK$13,056 HKD
View
A
Retailer 4
-
HK$15,474 HKD
£1,553 GBP
View
B+
Retailer 5
-
HK$16,100 HKD
$2,052 USD
View
B+
Retailer 6
-
HK$17,169 HKD
€2,084 EUR
View
B+
Retailer 7
-
HK$19,066 HKD
$2,430 USD
View
Retailer 8
-
HK$27,653 HKD
$3,524 USD
View
Price last confirmed 9 days ago
B
Retailer 9
-
HK$34,457 HKD
£3,458 GBP
View
B
Retailer 10
-
HK$37,356 HKD
$4,761 USD
View
B
Retailer 11
-
HK$40,957 HKD
$5,220 USD
View
Most Expensive
B
With Clarity
800681940 · Nov 2
HK$54,452 HKD
$6,940 USD
View
11 more retailers have this diamond
Prices start from HK$12,240 HKDSave up to HK$42,212 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$12,240 HKD