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Marquise|Lab Grown|IGI

3.18ct D FL Marquise Lab Grown Diamond

ID • D/FL • IGI LG780665993

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG780665993

Diamond specifications and retailer prices

From HK$28,417 HKD
$3,622 USD
As of October 30, 2026
Save HK$167,098 HKD (85%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$195,515 HKD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 3.18ct lab-grown marquise diamond

This 3.18ct lab-grown marquise sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG780665993 or 780665993. Listed at 15 retailers as of October 30, 2026, with prices from HK$28,417 to HK$195,515, a HK$167,098 spread on the same certified stone. Do Amore Diamonds lists it at HK$195,515. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.18
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780665993
Dimensions14.68 × 7.69 × 4.79 mm
L/W Ratio1.91
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
14.68 mm7.69 mm3.18 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780665993
Side View
Table 61.0%Crown 34.6°Girdle: MED-THKPavilion 39.8°Culet: NoneDepth 62.3%

Caratlytics Score

How it works →
A+
Exceptional
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: Oct 30
Current: HK$195,515 HKD|Low: HK$28,417 HKD|High: HK$225,172 HKD|Avg: HK$66,542 HKD|-13.2%
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
October 31, 2026
Retailer 10HK$28,417 HKD
Retailer 11HK$29,822 HKD
Retailer 8HK$31,053 HKD
Retailer 5HK$31,210 HKD
Retailer 13HK$34,168 HKD
Retailer 6HK$38,460 HKD
Retailer 2HK$44,579 HKD
Retailer 15HK$45,474 HKD
Retailer 3HK$51,585 HKD
Retailer 7HK$59,389 HKD
Retailer 12HK$62,411 HKD
Retailer 9HK$74,063 HKD
Retailer 4HK$78,786 HKD
Retailer 14HK$90,367 HKD
Do Amore DiamondsHK$195,515 HKD

34 data points across 15 retailers

15 retailersHK$28,417 HKD to HK$195,515 HKD

A+
Cheapest Retailer
-
HK$28,417 HKD
$3,622 USD
A
Retailer 2
-
HK$29,822 HKD
$3,801 USD
View
A
Retailer 3
-
HK$31,053 HKD
$3,958 USD
View
A
Retailer 4
-
HK$31,210 HKD
$3,978 USD
View
A
Retailer 5
-
HK$34,168 HKD
$4,355 USD
View
A
Retailer 6
-
HK$38,460 HKD
$4,902 USD
View
Final sale: no returns
A
Retailer 7
-
HK$44,579 HKD
$5,682 USD
View
A
Retailer 8
-
HK$45,474 HKD
$5,796 USD
View
B+
Retailer 9
-
HK$51,585 HKD
$6,575 USD
View
Retailer 10
-
HK$59,389 HKD
$7,570 USD
View
Price last confirmed 48 days ago
B+
Retailer 11
-
HK$62,411 HKD
€7,576 EUR
View
B+
Retailer 12
-
HK$74,063 HKD
$9,440 USD
View
B+
Retailer 13
-
HK$78,786 HKD
£7,907 GBP
View
B+
Retailer 14
-
HK$90,367 HKD
$11,518 USD
View
Most Expensive
B
Do Amore Diamonds
27-8B9A3C576 · Oct 31
HK$195,515 HKD
$24,920 USD
View
14 more retailers have this diamond
Prices start from HK$28,417 HKDSave up to HK$167,098 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+
3.18ct Marquise
HK$28,417 HKD