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Heart|Lab Grown|IGI

4.31ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG811634649

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG811634649

Diamond specifications and retailer prices

From $7,402 NZD
$4,172 USD
As of October 30, 2026
Save $43,520 NZD (85%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $50,922 NZD at Do Amore Diamonds · As of November 1, 2026
View at Do Amore Diamonds

About this 4.31ct lab-grown heart diamond

This 4.31ct lab-grown heart sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG811634649 or 811634649. Listed at 12 retailers as of October 30, 2026, with prices from $7,402 to $50,922, a $43,520 spread on the same certified stone. Do Amore Diamonds lists it at $50,922. 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

4.31
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.9°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811634649
Dimensions10.97 × 9.88 × 6.61 mm
L/W Ratio1.11
Girdle conditionFaceted
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
10.97 mm9.88 mm4.31 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811634649
Side View
Table 59.0%Crown 36.9°Girdle: STK-THKPavilion 39.5°Culet: NoneDepth 60.3%

Caratlytics Score

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

Price History

Last verified: Oct 30
Current: $50,922 NZD|Low: $7,402 NZD|High: $57,292 NZD|Avg: $18,287 NZD|-11.1%
Do Amore Diamonds
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 1, 2026
Retailer 12$7,402 NZD
Retailer 3$7,791 NZD
Retailer 8$7,986 NZD
Retailer 9$8,676 NZD
Retailer 4$8,781 NZD
Retailer 13$11,221 NZD
Retailer 7$11,843 NZD
Retailer 6$13,295 NZD
Retailer 10$16,352 NZD
Retailer 5$18,704 NZD
Retailer 2$19,627 NZD
Retailer 11$28,353 NZD
Do Amore Diamonds$50,922 NZD

31 data points across 13 retailers

12 retailers$7,402 NZD to $50,922 NZD

A
Cheapest Retailer
-
$7,402 NZD
$4,172 USD
A
Retailer 2
-
$7,791 NZD
$4,391 USD
View
A
Retailer 3
-
$7,986 NZD
$4,501 USD
View
A
Retailer 4
-
$8,676 NZD
$4,890 USD
View
A
Retailer 5
-
$8,781 NZD
$4,949 USD
View
A
Retailer 6
-
$11,221 NZD
$6,324 USD
View
A
Retailer 7
-
$11,843 NZD
$6,675 USD
View
A
Retailer 8
-
$13,295 NZD
$7,493 USD
View
A
Retailer 9
-
$16,352 NZD
€8,777 EUR
View
B+
Retailer 10
-
$19,627 NZD
£8,710 GBP
View
B+
Retailer 11
-
$28,353 NZD
$15,980 USD
View
Most Expensive
B
Do Amore Diamonds
27-9DF32E853 · Nov 1
$50,922 NZD
$28,700 USD
View
11 more retailers have this diamond
Prices start from $7,402 NZDSave up to $43,520 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
4.31ct Heart
$7,402 NZD