Marquise|Lab Grown|IGI

3.55ct D IF Marquise Lab Grown Diamond

ID • D/IF • IGI LG839612920

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG839612920

Diamond specifications and retailer prices

From $4,605 USD
As of October 30, 2026
Save $14,496 USD (76%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $19,101 USD at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 3.55ct lab-grown marquise diamond

This 3.55ct lab-grown marquise sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG839612920 or 839612920. Listed at 25 retailers as of October 30, 2026, with prices from $4,605 to $19,101, a $14,496 spread on the same certified stone. Taylor and Hart lists it at $19,101. 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

3.55
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839612920
Dimensions16.83 × 7.70 × 4.72 mm
L/W Ratio2.19
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.83 mm7.70 mm3.55 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839612920
Side View
Table 63.0%Crown 35.3°Girdle: MED-STKPavilion 39.3°Culet: NoneDepth 61.3%

Caratlytics Score

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

Price History

Last verified: Oct 30
Current: $6,949 USD|Low: $4,421 USD|High: $16,070 USD|Avg: $8,924 USD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 2, 2026
Retailer 3$4,605 USD
Retailer 5$5,342 USD
Retailer 2$5,375 USD
Retailer 8$6,356 USD
Retailer 10$6,822 USD
Retailer 9$6,941 USD
Retailer 1$6,949 USD
Retailer 12$8,689 USD
Retailer 13$10,013 USD
Retailer 6$11,060 USD
Retailer 7$12,325 USD
Retailer 11$12,402 USD
Retailer 4$15,590 USD

36 data points across 13 retailers

25 retailers$4,605 USD to $19,101 USD

A
Cheapest Retailer
-
$4,605 USD
Retailer 2
-
$4,605 USD
View
Price last confirmed 33 days ago
Retailer 3
-
$4,826 USD
View
Price last confirmed 33 days ago
A
Retailer 4
-
$4,886 USD
View
A
Retailer 5
-
$5,158 USD
View
Final sale: no returns
Retailer 6
-
$5,268 USD
View
Price last confirmed 34 days ago
A
Retailer 7
-
$5,342 USD
View
A
Retailer 8
-
$5,375 USD
View
A
Retailer 9
-
$6,349 USD
HK$49,600 HKD
View
A
Retailer 10
-
$6,356 USD
£5,005 GBP
View
Retailer 11
-
$6,675 USD
View
Price last confirmed 32 days ago
B+
Retailer 12
-
$6,822 USD
View
A
Retailer 13
-
$6,941 USD
£5,465 GBP
View
B+
Retailer 14
-
$6,949 USD
£5,472 GBP
View
B+
Retailer 15
-
$7,798 USD
View
B+
Retailer 16
-
$8,689 USD
€8,275 EUR
View
B+
Retailer 17
-
$10,013 USD
View
B+
Retailer 18
-
$11,060 USD
£8,709 GBP
View
B
Retailer 19
-
$12,325 USD
A$18,961 AUD
View
B+
Retailer 20
-
$12,402 USD
ZAR 200,363 ZAR
View
Retailer 21
-
$13,636 USD
View
Price last confirmed 8 days ago
B
Retailer 22
-
$15,571 USD
View
B
Retailer 23
-
$15,590 USD
View
B
Retailer 24
-
$18,385 USD
SGD 24,845 SGD
View
Most Expensive
B
Taylor and Hart
7QKA2DU · Oct 31
$19,101 USD
View
24 more retailers have this diamond
Prices start from $4,605 USDSave up to $14,496 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. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
3.55ct Marquise
$4,605 USD