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4.25ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG810620388

Shape and cutting style on the report: Round brilliant

Certificate IGI LG810620388

Diamond specifications and retailer prices

From $5,986 NZD
$3,374 USD
As of October 29, 2026
Save $20,184 NZD (77%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $26,171 NZD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 4.25ct lab-grown round diamond

This 4.25ct lab-grown round sits in the three to five carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG810620388 or 810620388. Listed at 21 retailers as of October 29, 2026, with prices from $5,986 to $26,171, a $20,184 spread on the same certified stone. Brilliant Earth lists it at $26,171. 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

4.25
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG810620388
Dimensions10.39 × 10.45 × 6.34 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
HEARTS & ARROWS 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
10.39 mm10.45 mm4.25 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG810620388
Side View
Table 58.0%Crown 34.6°Girdle: THN-MEDPavilion 40.6°Culet: NoneDepth 60.8%

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 29
Current: $26,171 NZD|Low: $5,986 NZD|High: $33,552 NZD|Avg: $12,826 NZD|-22.0%
Brilliant Earth
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
Retailer 18
Retailer 19
Retailer 20
Retailer 21
November 1, 2026
Retailer 14$5,986 NZD
Retailer 8$6,513 NZD
Retailer 10$6,705 NZD
Retailer 5$6,810 NZD
Retailer 4$6,945 NZD
Retailer 12$6,945 NZD
Retailer 20$6,946 NZD
Retailer 17$8,085 NZD
Retailer 7$8,602 NZD
Retailer 3$8,678 NZD
Retailer 15$8,735 NZD
Retailer 2$9,225 NZD
Retailer 21$9,968 NZD
Retailer 13$12,266 NZD
Retailer 16$14,780 NZD
Retailer 9$17,395 NZD
Retailer 18$17,698 NZD
Retailer 6$19,270 NZD
Retailer 19$23,395 NZD
Retailer 11$24,372 NZD
Brilliant Earth$26,171 NZD

33 data points across 21 retailers

21 retailers$5,986 NZD to $26,171 NZD

A
Cheapest Retailer
-
$5,986 NZD
$3,374 USD
A
Retailer 2
-
$6,513 NZD
$3,671 USD
View
A
Retailer 3
-
$6,705 NZD
$3,779 USD
View
Final sale: no returns
A
Retailer 4
-
$6,810 NZD
$3,838 USD
View
Retailer 5
-
$6,945 NZD
$3,914 USD
View
Price last confirmed 19 days ago
A
Retailer 6
-
$6,945 NZD
$3,914 USD
View
A
Retailer 7
-
$6,946 NZD
$3,915 USD
View
A
Retailer 8
-
$8,085 NZD
HK$35,600 HKD
View
A
Retailer 9
-
$8,602 NZD
$4,848 USD
View
A
Retailer 10
-
$8,678 NZD
$4,891 USD
View
A
Retailer 11
-
$8,735 NZD
$4,923 USD
View
A
Retailer 12
-
$9,225 NZD
£4,094 GBP
View
A
Retailer 13
-
$9,968 NZD
$5,618 USD
View
B+
Retailer 14
-
$12,266 NZD
€6,584 EUR
View
B+
Retailer 15
-
$14,780 NZD
ZAR 134,572 ZAR
View
B+
Retailer 16
-
$17,395 NZD
$9,804 USD
View
B
Retailer 17
-
$17,698 NZD
£7,854 GBP
View
B+
Retailer 18
-
$19,270 NZD
$10,861 USD
View
B+
Retailer 19
-
$23,395 NZD
SGD 17,818 SGD
View
B
Retailer 20
-
$24,372 NZD
$13,736 USD
View
Most Expensive
B
Brilliant Earth
20726621A · Oct 31
$26,171 NZD
$14,750 USD
View
20 more retailers have this diamond
Prices start from $5,986 NZDSave up to $20,184 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
4.25ct Round
$5,986 NZD