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Marquise|Lab Grown|IGI

2.56ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG771601086

Certificate IGI LG771601086

Diamond specifications and retailer prices

From $4,089 USD
Save $16,822 USD (80%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $20,911 USD at Taylor and Hart
View at Taylor and Hart

About this 2.56ct lab-grown marquise diamond

This 2.56ct 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 LG771601086 or 771601086. Listed at 18 retailers, with prices from $4,089 to $20,911 at Taylor and Hart, a $16,822 spread on the same certified stone. 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

2.56
Carat
D
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG771601086
Dimensions13.91 × 7.32 × 4.46 mm
L/W Ratio1.90
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
13.91 mm7.32 mm2.56 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG771601086
Side View
Table 59.0%Crown 36°Girdle: MED-STKPavilion 39.5°Culet: NoneDepth 60.7%

Caratlytics Score

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

Price History

Last verified: Oct 1
Current: $7,134 USD|Low: $3,637 USD|High: $42,210 USD|Avg: $13,289 USD
Retailer 1
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Retailer 18
Taylor and Hart
September 29, 2026
Retailer 7$4,089 USD
Retailer 18$5,093 USD
Retailer 5$5,315 USD
Retailer 14$5,625 USD
Retailer 1$7,134 USD
Retailer 11$7,554 USD
Retailer 6$7,588 USD
Retailer 2$8,245 USD
Retailer 4$10,580 USD
Retailer 17$11,078 USD
Retailer 13$11,993 USD
Retailer 10$13,707 USD
Retailer 12$14,750 USD
Retailer 3$14,925 USD
Retailer 9$15,231 USD
Retailer 15$18,977 USD
Retailer 16$19,776 USD
Taylor and Hart$20,911 USD
Retailer 8$31,290 USD

29 data points across 19 retailers

18 retailers$4,089 USD to $20,911 USD

A
Cheapest Retailer
-
$4,089 USD
B+
Retailer 2
-
$5,093 USD
View
B+
Retailer 3
-
$5,315 USD
View
B+
Retailer 4
-
$5,625 USD
View
B+
Retailer 5
-
$7,134 USD
View
B+
Retailer 6
-
$7,548 USD
£5,944 GBP
View
B
Retailer 7
-
$7,588 USD
View
B
Retailer 8
-
$8,245 USD
£6,492 GBP
View
B
Retailer 9
-
$10,580 USD
View
B
Retailer 10
-
$11,078 USD
View
B
Retailer 11
-
$11,993 USD
£9,443 GBP
View
B
Retailer 12
-
$14,750 USD
ZAR 238,294 ZAR
View
B
Retailer 13
-
$14,925 USD
View
B
Retailer 14
-
$15,231 USD
View
B
Retailer 15
-
$18,977 USD
View
B
Retailer 16
-
$19,776 USD
View
Most Expensive
B
Taylor and Hart
JEUINXG · Sep 30
$20,911 USD
View
16 more retailers have this diamond
Prices start from $4,089 USDSave up to $16,822 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
2.56ct Marquise
$4,089 USD