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Round|Lab Grown|IGI

1.28ct D VVS1 Round Lab Grown Diamond

EX • D/VVS1 • IGI LG778645702

Shape and cutting style on the report: Round brilliant

Certificate IGI LG778645702

Diamond specifications and retailer prices

From $392 NZD
As of November 3, 2026
Save $1,845 NZD (82%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: $3,875 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 VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG778645702 or 778645702. Listed at 26 retailers as of November 3, 2026, with a 471% 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
VVS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778645702
Dimensions6.89 × 6.92 × 4.32 mm
L/W Ratio1.00
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
6.89 mm6.92 mm1.28 ctD / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778645702
Side View
Table 58.0%Crown 35.6°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 62.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 3
Current: $894 NZD|Low: $376 NZD|High: $2,182 NZD|Avg: $1,018 NZD|+4.1%
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
November 5, 2026
Retailer 14$392 NZD
Retailer 5$456 NZD
Retailer 3$486 NZD
Retailer 2$656 NZD
Retailer 7$770 NZD
Retailer 11$839 NZD
Retailer 9$883 NZD
Retailer 1$894 NZD
Retailer 4$921 NZD
Retailer 10$1,189 NZD
Retailer 6$1,565 NZD
Retailer 8$1,570 NZD
Retailer 12$1,950 NZD
Retailer 13$2,182 NZD

44 data points across 14 retailers

26 retailers$392 NZD to $2,237 NZD

A
Cheapest Retailer
-
$392 NZD
A
Retailer 2
-
$440 NZD
View
Final sale: no returns
A
Retailer 3
-
$456 NZD
View
Retailer 4
-
$486 NZD
View
Price last confirmed 11 days ago
A
Retailer 5
-
$486 NZD
View
A
Retailer 6
-
$545 NZD
View
B+
Retailer 7
-
$656 NZD
View
A
Retailer 8
-
$770 NZD
View
A
Retailer 9
-
$839 NZD
View
A
Retailer 10
-
$883 NZD
View
A
Retailer 11
-
$894 NZD
View
B+
Retailer 12
-
$921 NZD
View
B+
Retailer 13
-
$933 NZD
View
B+
Retailer 14
-
$1,189 NZD
View
B+
Retailer 15
-
$1,291 NZD
View
B
Retailer 16
-
$1,565 NZD
View
B
Retailer 17
-
$1,570 NZD
View
Retailer 18
-
$1,572 NZD
View
Price last confirmed 101 days ago
B
Retailer 19
-
$1,577 NZD
View
B
Retailer 20
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$1,657 NZD
View
B
Retailer 21
-
$1,676 NZD
View
B
Retailer 22
-
$1,891 NZD
View
B
Retailer 23
-
$1,950 NZD
View
Retailer 24
-
$2,182 NZD
View
Price last confirmed 20 days ago
B
Retailer 25
-
$2,237 NZD
View
Most Expensive
Queensmith
LG778645702 · Oct 27
$3,875 NZD
£1,720 GBP
View
Price last confirmed 8 days ago
25 more retailers have this diamond
Prices start from $392 NZDSave up to $1,845 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
$392 NZD