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Marquise|Lab Grown|IGI

2.51ct E IF Marquise Lab Grown Diamond

ID • E/IF • IGI LG818684305

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818684305

Diamond specifications and retailer prices

From HK$21,654 HKD
$2,760 USD
As of October 29, 2026
Save HK$61,518 HKD (74%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: HK$83,172 HKD at With Clarity · As of October 30, 2026
View at With Clarity

About this 2.51ct lab-grown marquise diamond

This 2.51ct lab-grown marquise sits in the two to three carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818684305 or 818684305. Listed at 13 retailers as of October 29, 2026, with prices from HK$21,654 to HK$83,172, a HK$61,518 spread on the same certified stone. With Clarity lists it at HK$83,172. 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

2.51
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818684305
Dimensions13.93 × 7.11 × 4.47 mm
L/W Ratio1.96
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
13.93 mm7.11 mm2.51 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818684305
Side View
Table 59.0%Crown 35.1°Girdle: MED-STKPavilion 39.8°Culet: NoneDepth 62.9%

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 29
Current: HK$29,545 HKD|Low: HK$23,992 HKD|High: HK$83,172 HKD|Avg: HK$47,682 HKD|-1.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
With Clarity
October 30, 2026
Retailer 10HK$23,992 HKD
Retailer 11HK$26,211 HKD
Retailer 1HK$29,545 HKD
Retailer 8HK$32,403 HKD
Retailer 5HK$34,221 HKD
Retailer 6HK$36,012 HKD
Retailer 7HK$56,265 HKD
Retailer 3HK$56,321 HKD
Retailer 4HK$57,752 HKD
Retailer 9HK$62,923 HKD
Retailer 2HK$74,916 HKD
With ClarityHK$83,172 HKD

32 data points across 12 retailers

13 retailersHK$21,654 HKD to HK$83,172 HKD

A
Cheapest Retailer
-
HK$21,654 HKD
$2,760 USD
A
Retailer 2
-
HK$23,992 HKD
$3,058 USD
View
A
Retailer 3
-
HK$26,211 HKD
View
A
Retailer 4
-
HK$29,545 HKD
£2,965 GBP
View
B+
Retailer 5
-
HK$32,403 HKD
$4,130 USD
View
B+
Retailer 6
-
HK$34,221 HKD
€4,154 EUR
View
B+
Retailer 7
-
HK$36,012 HKD
$4,590 USD
View
Retailer 8
-
HK$56,265 HKD
A$11,033 AUD
View
Price last confirmed 22 days ago
B+
Retailer 9
-
HK$56,321 HKD
$7,179 USD
View
B+
Retailer 10
-
HK$57,752 HKD
£5,796 GBP
View
B
Retailer 11
-
HK$62,923 HKD
$8,020 USD
View
B
Retailer 12
-
HK$74,916 HKD
$9,549 USD
View
Most Expensive
B
With Clarity
818684305 · Oct 30
HK$83,172 HKD
$10,601 USD
View
12 more retailers have this diamond
Prices start from HK$21,654 HKDSave up to HK$61,518 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
2.51ct Marquise
HK$21,654 HKD