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4.27ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG828680589

Shape and cutting style on the report: Round brilliant

Certificate IGI LG828680589

Diamond specifications and retailer prices

From $6,200 NZD
HK$27,300 HKD
As of October 30, 2026
Save $19,155 NZD (76%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $25,355 NZD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 4.27ct lab-grown round diamond

This 4.27ct 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 LG828680589 or 828680589. Listed at 14 retailers as of October 30, 2026, with prices from $6,200 to $25,355, a $19,155 spread on the same certified stone. Brilliant Earth lists it at $25,355. 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

4.27
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG828680589
Dimensions10.42 × 10.37 × 6.45 mm
L/W Ratio1.00
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
10.42 mm10.37 mm4.27 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG828680589
Side View
Table 56.0%Crown 35.3°Girdle: THN-MEDPavilion 40.8°Culet: NoneDepth 62.0%

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: $25,355 NZD|Low: $6,200 NZD|High: $44,109 NZD|Avg: $14,431 NZD|-42.5%
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
October 31, 2026
Retailer 13$6,200 NZD
Retailer 6$6,854 NZD
Retailer 10$7,665 NZD
Retailer 2$8,110 NZD
Retailer 11$8,875 NZD
Retailer 7$10,850 NZD
Retailer 3$13,334 NZD
Retailer 12$13,611 NZD
Retailer 8$13,721 NZD
Retailer 5$17,788 NZD
Retailer 4$19,691 NZD
Retailer 9$19,968 NZD
Brilliant Earth$25,355 NZD

34 data points across 13 retailers

14 retailers$6,200 NZD to $25,355 NZD

A
Cheapest Retailer
-
$6,200 NZD
HK$27,300 HKD
A
Retailer 2
-
$6,854 NZD
£3,042 GBP
View
A
Retailer 3
-
$7,665 NZD
$4,320 USD
View
A
Retailer 4
-
$8,110 NZD
€4,353 EUR
View
A
Retailer 5
-
$8,875 NZD
$5,002 USD
View
A
Retailer 6
-
$10,850 NZD
ZAR 98,792 ZAR
View
B+
Retailer 7
-
$13,334 NZD
$7,515 USD
View
B+
Retailer 8
-
$13,611 NZD
$7,671 USD
View
B+
Retailer 9
-
$13,721 NZD
£6,089 GBP
View
B+
Retailer 10
-
$15,153 NZD
$8,540 USD
View
B+
Retailer 11
-
$17,788 NZD
$10,026 USD
View
B+
Retailer 12
-
$19,691 NZD
$11,098 USD
View
Retailer 13
-
$19,968 NZD
A$17,314 AUD
View
Price last confirmed 22 days ago
Most Expensive
B
Brilliant Earth
21581974A · Oct 30
$25,355 NZD
$14,290 USD
View
13 more retailers have this diamond
Prices start from $6,200 NZDSave up to $19,155 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
4.27ct Round
$6,200 NZD