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Marquise|Lab Grown|IGI

2.55ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG780664158

Certificate IGI LG780664158

Diamond specifications and retailer prices

From $4,774 USD
HK$37,300 HKD
Save $1,386 USD (22%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $13,364 USD at Taylor and Hart
View at Taylor and Hart

About this 2.55ct lab-grown marquise diamond

This 2.55ct lab-grown marquise sits in the two to three carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG780664158 or 780664158. Listed at 5 retailers, with a 29% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

2.55
Carat
D
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.9°
Pavilion angle39.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780664158
Dimensions13.79 × 7.10 × 4.49 mm
L/W Ratio1.94
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
13.79 mm7.10 mm2.55 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780664158
Side View
Table 59.0%Crown 36.9°Girdle: MED-STKPavilion 39.7°Culet: NoneDepth 63.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0-100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Sep 30
Current: $3,122 USD|Low: $2,501 USD|High: $18,869 USD|Avg: $8,296 USD|-38.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Taylor and Hart
September 18, 2026
Retailer 9$2,501 USD
Retailer 1$3,122 USD
Retailer 10$4,438 USD
Retailer 5$4,774 USD
Retailer 11$5,312 USD
Retailer 7$6,046 USD
Retailer 6$6,160 USD
Retailer 2$7,027 USD
Retailer 8$10,360 USD
Retailer 12$10,932 USD
Taylor and Hart$13,364 USD
Retailer 3$13,996 USD
Retailer 4$18,869 USD

2 data points across 13 retailers

5 retailers$4,774 USD to $6,160 USD

A
Retailer 1
-
$3,122 USD
Price last confirmed 13 days ago
B+
Retailer 2
-
$4,774 USD
HK$37,300 HKD
View
B+
Retailer 3
-
$6,046 USD
€5,758 EUR
View
Price last confirmed 78 days ago
B+
Retailer 4
-
$6,160 USD
View
Most Expensive
B
Taylor and Hart
46XZ5YJ · Sep 18
$13,364 USD
View
Price last confirmed 13 days ago
4 more retailers have this diamond
Prices start from $4,774 USDSave up to $1,386 USD

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.

A
2.55ct Marquise
$4,774 USD