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Round|Lab Grown|IGI

4.18ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG679506702

Shape and cutting style on the report: Round brilliant

Certificate IGI LG679506702

Diamond specifications and retailer prices

From $2,971 NZD
£1,319 GBP
As of October 30, 2026
Save $10,448 NZD (78%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $13,419 NZD at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 4.18ct lab-grown round diamond

This 4.18ct lab-grown round 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 LG679506702 or 679506702. Listed at 18 retailers as of October 30, 2026, with prices from $2,971 to $13,419, a $10,448 spread on the same certified stone. Taylor and Hart lists it at $13,419. 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

4.18
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG679506702
Dimensions10.23 × 10.30 × 6.39 mm
L/W Ratio1.01
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
10.23 mm10.30 mm4.18 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG679506702
Side View
Table 57.0%Crown 34.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.2%

Caratlytics Score

How it works →
A+
Exceptional
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: $8,208 NZD|Low: $2,971 NZD|High: $13,753 NZD|Avg: $6,351 NZD|-0.3%
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 31, 2026
Retailer 16$2,971 NZD
Retailer 7$3,385 NZD
Retailer 14$3,593 NZD
Retailer 17$3,696 NZD
Retailer 10$3,831 NZD
Retailer 9$3,927 NZD
Retailer 13$3,930 NZD
Retailer 8$4,260 NZD
Retailer 11$5,246 NZD
Retailer 3$5,669 NZD
Retailer 6$6,448 NZD
Retailer 12$7,179 NZD
Retailer 1$8,208 NZD
Retailer 2$8,359 NZD
Retailer 5$8,427 NZD
Retailer 15$10,321 NZD
Retailer 4$11,231 NZD
Taylor and Hart$13,419 NZD

31 data points across 18 retailers

18 retailers$2,971 NZD to $13,419 NZD

A+
Cheapest Retailer
-
$2,971 NZD
£1,319 GBP
A
Retailer 2
-
$3,385 NZD
$1,908 USD
View
A
Retailer 3
-
$3,593 NZD
$2,025 USD
View
A
Retailer 4
-
$3,696 NZD
$2,083 USD
View
Final sale: no returns
A
Retailer 5
-
$3,831 NZD
$2,159 USD
View
Retailer 6
-
$3,927 NZD
$2,213 USD
View
Price last confirmed 20 days ago
A
Retailer 7
-
$3,930 NZD
$2,215 USD
View
A
Retailer 8
-
$4,260 NZD
$2,401 USD
View
A
Retailer 9
-
$5,246 NZD
£2,328 GBP
View
A
Retailer 10
-
$5,669 NZD
$3,195 USD
View
A
Retailer 11
-
$6,448 NZD
$3,634 USD
View
A
Retailer 12
-
$7,179 NZD
$4,046 USD
View
A
Retailer 13
-
$8,208 NZD
$4,626 USD
View
A
Retailer 14
-
$8,359 NZD
ZAR 76,110 ZAR
View
Retailer 15
-
$8,427 NZD
A$7,307 AUD
View
Price last confirmed 9 days ago
A
Retailer 16
-
$10,321 NZD
$5,817 USD
View
B+
Retailer 17
-
$11,231 NZD
£4,984 GBP
View
Most Expensive
B+
Taylor and Hart
8Y0X2RH · Oct 31
$13,419 NZD
$7,563 USD
View
17 more retailers have this diamond
Prices start from $2,971 NZDSave up to $10,448 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+
4.18ct Round
$2,971 NZD