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Marquise|Lab Grown|IGI

3.12ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG839684893

Shape and cutting style on the report: Hexagonal modified brilliant

Certificate IGI LG839684893

Diamond specifications and retailer prices

From $4,719 NZD
$2,655 USD
As of November 1, 2026
Save $20,412 NZD (81%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $25,131 NZD at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

About this 3.12ct lab-grown marquise diamond

This 3.12ct 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 LG839684893 or 839684893. Listed at 8 retailers as of November 1, 2026, with prices from $4,719 to $25,131, a $20,412 spread on the same certified stone. Do Amore Diamonds lists it at $25,131. 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

3.12
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle35.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839684893
Dimensions13.89 × 7.19 × 4.68 mm
L/W Ratio1.93
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
13.89 mm7.19 mm3.12 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839684893
Side View
Table 62.0%Crown 35.4°Girdle: MED-STKPavilion 35.5°Culet: NoneDepth 65.1%

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: Nov 1
Current: $25,131 NZD|Low: $4,719 NZD|High: $25,131 NZD|Avg: $11,566 NZD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 6$4,719 NZD
Retailer 4$4,976 NZD
Retailer 8$7,394 NZD
Retailer 7$13,712 NZD
Retailer 3$13,852 NZD
Retailer 2$15,629 NZD
Retailer 5$18,053 NZD
Do Amore Diamonds$25,131 NZD

10 data points across 8 retailers

8 retailers$4,719 NZD to $25,131 NZD

A
Cheapest Retailer
-
$4,719 NZD
$2,655 USD
Final sale: no returns
A
Retailer 2
-
$4,976 NZD
$2,800 USD
View
A
Retailer 3
-
$7,394 NZD
$4,160 USD
View
B+
Retailer 4
-
$13,712 NZD
$7,715 USD
View
B+
Retailer 5
-
$13,852 NZD
£6,137 GBP
View
B+
Retailer 6
-
$15,629 NZD
£6,924 GBP
View
B
Retailer 7
-
$18,053 NZD
$10,158 USD
View
Most Expensive
B
Do Amore Diamonds
20-E103545 · Nov 2
$25,131 NZD
$14,140 USD
View
7 more retailers have this diamond
Prices start from $4,719 NZDSave up to $20,412 NZD

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
3.12ct Marquise
$4,719 NZD