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Round|Lab Grown|IGI

4.26ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG737568627

Shape and cutting style on the report: Round brilliant

Certificate IGI LG737568627

Diamond specifications and retailer prices

From $3,639 NZD
£1,615 GBP
As of October 30, 2026
Save $20,482 NZD (85%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: $24,122 NZD at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 4.26ct lab-grown round diamond

This 4.26ct 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 LG737568627 or 737568627. Listed at 26 retailers as of October 30, 2026, with prices from $3,639 to $24,122, a $20,482 spread on the same certified stone. Blue Nile lists it at $24,122. 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

4.26
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG737568627
Dimensions10.38 × 10.30 × 6.44 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
10.38 mm10.30 mm4.26 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG737568627
Side View
Table 56.0%Crown 35.2°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.3%

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: $7,443 NZD|Low: $3,627 NZD|High: $42,672 NZD|Avg: $9,979 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
October 31, 2026
Retailer 11$3,639 NZD
Retailer 2$4,044 NZD
Retailer 16$4,400 NZD
Retailer 13$4,528 NZD
Retailer 4$4,691 NZD
Retailer 9$6,434 NZD
Retailer 3$6,448 NZD
Retailer 6$6,804 NZD
Retailer 7$7,044 NZD
Retailer 5$7,189 NZD
Retailer 1$7,443 NZD
Retailer 12$9,986 NZD
Retailer 15$10,067 NZD
Retailer 14$12,797 NZD
Retailer 8$19,689 NZD
Retailer 10$23,900 NZD

30 data points across 16 retailers

26 retailers$3,639 NZD to $24,122 NZD

A+
Cheapest Retailer
-
$3,639 NZD
£1,615 GBP
A
Retailer 2
-
$4,044 NZD
$2,279 USD
View
A
Retailer 3
-
$4,400 NZD
$2,480 USD
View
A
Retailer 4
-
$4,528 NZD
$2,552 USD
View
Final sale: no returns
A
Retailer 5
-
$4,691 NZD
$2,644 USD
View
A
Retailer 6
-
$4,959 NZD
$2,795 USD
View
A
Retailer 7
-
$5,700 NZD
HK$25,100 HKD
View
A
Retailer 8
-
$6,434 NZD
£2,855 GBP
View
A
Retailer 9
-
$6,448 NZD
$3,634 USD
View
A
Retailer 10
-
$6,804 NZD
$3,835 USD
View
A
Retailer 11
-
$7,044 NZD
$3,970 USD
View
A
Retailer 12
-
$7,189 NZD
$4,052 USD
View
A
Retailer 13
-
$7,443 NZD
€3,995 EUR
View
A
Retailer 14
-
$8,726 NZD
$4,918 USD
View
A
Retailer 15
-
$9,986 NZD
ZAR 90,921 ZAR
View
Retailer 16
-
$10,067 NZD
A$8,729 AUD
View
Price last confirmed 9 days ago
B+
Retailer 17
-
$12,239 NZD
$6,898 USD
View
B+
Retailer 18
-
$12,527 NZD
$7,060 USD
View
B+
Retailer 19
-
$12,797 NZD
£5,679 GBP
View
B+
Retailer 20
-
$13,244 NZD
$7,465 USD
View
B+
Retailer 21
-
$16,388 NZD
$9,236 USD
View
B+
Retailer 22
-
$16,502 NZD
SGD 12,568 SGD
View
Retailer 23
-
$19,689 NZD
A$17,072 AUD
View
Price last confirmed 26 days ago
B
Retailer 24
-
$23,900 NZD
$13,470 USD
View
B
Retailer 25
-
$24,099 NZD
$13,582 USD
View
Most Expensive
B
Blue Nile
27482224 · Oct 31
$24,122 NZD
$13,595 USD
View
25 more retailers have this diamond
Prices start from $3,639 NZDSave up to $20,482 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+
4.26ct Round
$3,639 NZD