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Marquise|Lab Grown|IGI

3.17ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG766601599

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG766601599

Diamond specifications and retailer prices

From $4,008 USD
As of October 31, 2026
Save $4,952 USD (55%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $13,367 USD at Taylor and Hart · As of October 14, 2026
View at Taylor and Hart

About this 3.17ct lab-grown marquise diamond

This 3.17ct 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 LG766601599 or 766601599. Listed at 19 retailers as of October 31, 2026, with a 124% 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

3.17
Carat
D
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG766601599
Dimensions15.11 × 7.64 × 4.89 mm
L/W Ratio1.98
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.11 mm7.64 mm3.17 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG766601599
Side View
Table 57.0%Crown 33.3°Girdle: MED-STKPavilion 41.3°Culet: NoneDepth 64.0%

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 31
Current: $8,960 USD|Low: $2,732 USD|High: $13,367 USD|Avg: $7,056 USD|-28.8%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Taylor and Hart
October 30, 2026
Retailer 9$2,732 USD
Retailer 6$3,683 USD
Retailer 17$3,709 USD
Retailer 5$3,840 USD
Retailer 15$3,970 USD
Retailer 11$4,008 USD
Retailer 10$4,984 USD
Retailer 12$5,195 USD
Retailer 4$5,822 USD
Retailer 2$5,924 USD
Retailer 7$7,610 USD
Retailer 13$8,776 USD
Retailer 1$8,960 USD
Retailer 8$9,461 USD
Retailer 16$9,544 USD
Retailer 14$9,775 USD
Retailer 3$11,103 USD
Taylor and Hart$13,367 USD

33 data points across 18 retailers

19 retailers$4,008 USD to $8,960 USD

Retailer 1
-
$3,290 USD
Price last confirmed 24 days ago
Retailer 2
-
$3,579 USD
View
Price last confirmed 17 days ago
Retailer 3
-
$3,816 USD
View
Price last confirmed 19 days ago
Retailer 4
-
$3,816 USD
View
Price last confirmed 24 days ago
A
Retailer 5
-
$4,008 USD
View
Retailer 6
-
$4,087 USD
View
Price last confirmed 37 days ago
Retailer 7
-
$4,768 USD
View
Price last confirmed 24 days ago
A
Retailer 8
-
$4,984 USD
€4,747 EUR
View
Retailer 9
-
$5,195 USD
£4,091 GBP
View
Price last confirmed 17 days ago
Retailer 10
-
$5,822 USD
£4,584 GBP
View
Price last confirmed 17 days ago
Retailer 11
-
$5,924 USD
View
Price last confirmed 18 days ago
Retailer 12
-
$7,610 USD
View
Price last confirmed 25 days ago
Retailer 13
-
$8,776 USD
ZAR 141,778 ZAR
View
Price last confirmed 17 days ago
B+
Retailer 14
-
$8,960 USD
View
Retailer 15
-
$9,461 USD
A$14,556 AUD
View
Price last confirmed 33 days ago
Retailer 16
-
$9,544 USD
View
Price last confirmed 17 days ago
Retailer 17
-
$9,775 USD
£7,697 GBP
View
Price last confirmed 17 days ago
Retailer 18
-
$11,103 USD
View
Price last confirmed 18 days ago
Most Expensive
Taylor and Hart
I4A2MOO · Oct 14
$13,367 USD
View
Price last confirmed 18 days ago
18 more retailers have this diamond
Prices start from $4,008 USDSave up to $4,952 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
3.17ct Marquise
$4,008 USD