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Marquise|Lab Grown|IGI

3.12ct D FL Marquise Lab Grown Diamond

ID • D/FL • IGI LG780662178

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG780662178

Diamond specifications and retailer prices

From HK$27,907 HKD
$3,557 USD
As of October 30, 2026
Save HK$164,156 HKD (85%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$192,063 HKD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 3.12ct lab-grown marquise diamond

This 3.12ct 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 LG780662178 or 780662178. Listed at 15 retailers as of October 30, 2026, with prices from HK$27,907 to HK$192,063, a HK$164,156 spread on the same certified stone. Do Amore Diamonds lists it at HK$192,063. 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

3.12
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.8°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780662178
Dimensions14.56 × 7.62 × 4.93 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
14.56 mm7.62 mm3.12 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780662178
Side View
Table 59.0%Crown 36.8°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 64.7%

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: Oct 30
Current: HK$192,063 HKD|Low: HK$27,907 HKD|High: HK$221,092 HKD|Avg: HK$65,063 HKD|-13.1%
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
November 1, 2026
Retailer 12HK$27,907 HKD
Retailer 13HK$29,272 HKD
Retailer 10HK$30,520 HKD
Retailer 6HK$30,653 HKD
Retailer 15HK$33,580 HKD
Retailer 7HK$37,769 HKD
Retailer 9HK$43,779 HKD
Retailer 4HK$44,658 HKD
Retailer 8HK$50,205 HKD
Retailer 5HK$57,744 HKD
Retailer 14HK$61,233 HKD
Retailer 11HK$67,395 HKD
Retailer 2HK$76,544 HKD
Retailer 3HK$88,709 HKD
Do Amore DiamondsHK$192,063 HKD

35 data points across 15 retailers

15 retailersHK$27,907 HKD to HK$192,063 HKD

A
Cheapest Retailer
-
HK$27,907 HKD
$3,557 USD
A
Retailer 2
-
HK$29,272 HKD
$3,731 USD
View
A
Retailer 3
-
HK$30,520 HKD
$3,890 USD
View
A
Retailer 4
-
HK$30,653 HKD
$3,907 USD
View
A
Retailer 5
-
HK$33,580 HKD
$4,280 USD
View
A
Retailer 6
-
HK$37,769 HKD
$4,814 USD
View
Final sale: no returns
A
Retailer 7
-
HK$43,779 HKD
$5,580 USD
View
A
Retailer 8
-
HK$44,658 HKD
$5,692 USD
View
A
Retailer 9
-
HK$50,205 HKD
$6,399 USD
View
B+
Retailer 10
-
HK$57,744 HKD
$7,360 USD
View
B+
Retailer 11
-
HK$61,233 HKD
€7,433 EUR
View
B+
Retailer 12
-
HK$67,395 HKD
$8,590 USD
View
B+
Retailer 13
-
HK$76,544 HKD
£7,682 GBP
View
B+
Retailer 14
-
HK$88,709 HKD
$11,307 USD
View
Most Expensive
B
Do Amore Diamonds
27-2357479ED · Oct 31
HK$192,063 HKD
$24,480 USD
View
14 more retailers have this diamond
Prices start from HK$27,907 HKDSave up to HK$164,156 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
3.12ct Marquise
HK$27,907 HKD