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Marquise|Lab Grown|IGI

1.78ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG754563659

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG754563659

Diamond specifications and retailer prices

From HK$8,333 HKD
$1,062 USD
As of November 2, 2026
Save HK$31,996 HKD (79%) vs most expensive(unlock to see where)
33 retailers carry this diamond
Most expensive: HK$73,989 HKD at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

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 LG754563659 or 754563659. Listed at 33 retailers as of November 2, 2026, with a 384% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle35.3°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754563659
Dimensions12.56 × 6.36 × 3.83 mm
L/W Ratio1.97
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
12.56 mm6.36 mm1.78 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754563659
Side View
Table 63.0%Crown 35.3°Girdle: MED-STKPavilion 39.5°Culet: NoneDepth 60.2%

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$73,989 HKD|Low: HK$8,333 HKD|High: HK$73,989 HKD|Avg: HK$22,792 HKD
Do Amore Diamonds
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
Retailer 20
Retailer 21
Retailer 22
November 3, 2026
Retailer 7HK$8,333 HKD
Retailer 10HK$9,062 HKD
Retailer 11HK$9,533 HKD
Retailer 15HK$10,686 HKD
Retailer 3HK$11,024 HKD
Retailer 14HK$11,306 HKD
Retailer 22HK$12,120 HKD
Retailer 13HK$15,322 HKD
Retailer 8HK$16,100 HKD
Retailer 19HK$17,169 HKD
Retailer 21HK$17,693 HKD
Retailer 4HK$19,600 HKD
Retailer 2HK$19,626 HKD
Retailer 17HK$26,556 HKD
Retailer 20HK$27,430 HKD
Retailer 6HK$29,956 HKD
Retailer 5HK$30,633 HKD
Retailer 16HK$34,268 HKD
Retailer 18HK$36,914 HKD
Retailer 12HK$39,290 HKD
Retailer 9HK$40,329 HKD
Do Amore DiamondsHK$73,989 HKD

43 data points across 22 retailers

33 retailersHK$8,333 HKD to HK$40,329 HKD

A
Cheapest Retailer
-
HK$8,333 HKD
$1,062 USD
Retailer 2
-
HK$8,333 HKD
$1,062 USD
View
Price last confirmed 26 days ago
Retailer 3
-
HK$8,333 HKD
$1,062 USD
View
Price last confirmed 34 days ago
Retailer 4
-
HK$9,062 HKD
$1,155 USD
View
Price last confirmed 35 days ago
Retailer 5
-
HK$9,533 HKD
$1,215 USD
View
Price last confirmed 35 days ago
A
Retailer 6
-
HK$9,619 HKD
$1,226 USD
View
Retailer 7
-
HK$9,666 HKD
$1,232 USD
View
Price last confirmed 31 days ago
Retailer 8
-
HK$9,666 HKD
$1,232 USD
View
Price last confirmed 23 days ago
A
Retailer 9
-
HK$10,686 HKD
$1,362 USD
View
Final sale: no returns
A
Retailer 10
-
HK$11,024 HKD
$1,405 USD
View
A
Retailer 11
-
HK$11,306 HKD
$1,441 USD
View
A
Retailer 12
-
HK$13,558 HKD
View
A
Retailer 13
-
HK$15,322 HKD
£1,538 GBP
View
B+
Retailer 14
-
HK$16,100 HKD
$2,052 USD
View
B+
Retailer 15
-
HK$17,169 HKD
€2,084 EUR
View
B+
Retailer 16
-
HK$17,693 HKD
$2,255 USD
View
B+
Retailer 17
-
HK$19,600 HKD
$2,498 USD
View
B+
Retailer 18
-
HK$19,626 HKD
ZAR 40,410 ZAR
View
Retailer 19
-
HK$19,992 HKD
$2,548 USD
View
Price last confirmed 23 days ago
B+
Retailer 20
-
HK$19,992 HKD
$2,548 USD
View
Retailer 21
-
HK$19,992 HKD
$2,548 USD
View
Price last confirmed 33 days ago
B+
Retailer 22
-
HK$26,556 HKD
A$5,207 AUD
View
B
Retailer 23
-
HK$27,430 HKD
$3,496 USD
View
Retailer 24
-
HK$27,653 HKD
$3,524 USD
View
Price last confirmed 10 days ago
B
Retailer 25
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HK$29,415 HKD
£2,952 GBP
View
B
Retailer 26
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HK$29,956 HKD
$3,818 USD
View
B
Retailer 27
-
HK$30,633 HKD
$3,904 USD
View
B
Retailer 28
-
HK$34,268 HKD
£3,439 GBP
View
B
Retailer 29
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HK$36,914 HKD
A$7,238 AUD
View
B
Retailer 30
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HK$37,888 HKD
$4,829 USD
View
B
Retailer 31
-
HK$39,290 HKD
SGD 6,767 SGD
View
B
Retailer 32
-
HK$40,329 HKD
$5,140 USD
View
Most Expensive
Do Amore Diamonds
27-5CCC7A6A6 · Nov 2
HK$73,989 HKD
$9,430 USD
View
Price under review
32 more retailers have this diamond
Prices start from HK$8,333 HKDSave up to HK$31,996 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$8,333 HKD