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Round|Lab Grown|IGI

1.28ct D VVS2 Round Lab Grown Diamond

EX • D/VVS2 • IGI LG818644578

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818644578

Diamond specifications and retailer prices

From $359 NZD
As of November 5, 2026
Save $1,882 NZD (84%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $3,818 NZD at Queensmith · As of October 27, 2026
View at Queensmith

About this 1.28ct lab-grown round diamond

This 1.28ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG818644578 or 818644578. Listed at 23 retailers as of October 31, 2026, with a 524% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
D
Colour
VVS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818644578
Dimensions6.87 × 6.92 × 4.35 mm
L/W Ratio1.01
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
6.87 mm6.92 mm1.28 ctD / VVS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818644578
Side View
Table 58.0%Crown 36.3°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 63.1%

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: Nov 5
Current: $726 NZD|Low: $359 NZD|High: $2,241 NZD|Avg: $843 NZD|-1.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 2$359 NZD
Retailer 12$400 NZD
Retailer 4$445 NZD
Retailer 3$601 NZD
Retailer 1$726 NZD
Retailer 9$768 NZD
Retailer 5$808 NZD
Retailer 8$817 NZD
Retailer 7$1,085 NZD
Retailer 6$1,437 NZD
Retailer 10$2,081 NZD
Retailer 11$2,241 NZD

35 data points across 12 retailers

23 retailers$359 NZD to $2,241 NZD

A
Cheapest Retailer
-
$359 NZD
A
Retailer 2
-
$400 NZD
View
Final sale: no returns
A
Retailer 3
-
$416 NZD
View
Retailer 4
-
$445 NZD
View
Price last confirmed 12 days ago
A
Retailer 5
-
$445 NZD
View
A
Retailer 6
-
$500 NZD
View
B+
Retailer 7
-
$601 NZD
View
A
Retailer 8
-
$726 NZD
View
A
Retailer 9
-
$768 NZD
View
A
Retailer 10
-
$808 NZD
View
A
Retailer 11
-
$817 NZD
View
A
Retailer 12
-
$824 NZD
View
B+
Retailer 13
-
$1,085 NZD
View
B+
Retailer 14
-
$1,162 NZD
View
B
Retailer 15
-
$1,432 NZD
View
B
Retailer 16
-
$1,437 NZD
View
B
Retailer 17
-
$1,448 NZD
View
B
Retailer 18
-
$1,512 NZD
View
B
Retailer 19
-
$1,526 NZD
View
B
Retailer 20
-
$2,081 NZD
View
B
Retailer 21
-
$2,133 NZD
View
B
Retailer 22
-
$2,241 NZD
View
Most Expensive
Queensmith
LG818644578 · Oct 27
$3,818 NZD
£1,690 GBP
View
Price last confirmed 9 days ago
22 more retailers have this diamond
Prices start from $359 NZDSave up to $1,882 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
1.28ct Round
$359 NZD