CaratHunter
Plans
Round|Lab Grown|IGI

1.28ct D VVS1 Round Lab Grown Diamond

ID • D/VVS1 • IGI LG811636178

Shape and cutting style on the report: Round brilliant

Certificate IGI LG811636178

Diamond specifications and retailer prices

From $440 NZD
As of November 4, 2026
Save $1,797 NZD (80%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $3,965 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 LG811636178 or 811636178. Listed at 23 retailers as of November 4, 2026, with a 408% 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811636178
Dimensions6.96 × 6.99 × 4.27 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
6.96 mm6.99 mm1.28 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811636178
Side View
Table 60.0%Crown 34°Girdle: MediumPavilion 41.2°Culet: NoneDepth 61.2%

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 4
Current: $894 NZD|Low: $593 NZD|High: $1,973 NZD|Avg: $1,105 NZD|+3.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 9$656 NZD
Retailer 3$770 NZD
Retailer 7$839 NZD
Retailer 5$883 NZD
Retailer 1$894 NZD
Retailer 6$1,189 NZD
Retailer 4$1,570 NZD
Retailer 8$1,863 NZD
Retailer 2$1,944 NZD

40 data points across 9 retailers

23 retailers$440 NZD to $2,237 NZD

Retailer 1
-
$376 NZD
Price last confirmed 35 days ago
A
Retailer 2
-
$440 NZD
View
Final sale: no returns
Retailer 3
-
$456 NZD
View
Price last confirmed 30 days ago
Retailer 4
-
$486 NZD
View
Price last confirmed 34 days ago
A
Retailer 5
-
$545 NZD
View
B+
Retailer 6
-
$656 NZD
View
A
Retailer 7
-
$770 NZD
View
A
Retailer 8
-
$839 NZD
View
A
Retailer 9
-
$883 NZD
View
A
Retailer 10
-
$894 NZD
View
B+
Retailer 11
-
$933 NZD
View
B+
Retailer 12
-
$1,189 NZD
View
B+
Retailer 13
-
$1,291 NZD
View
Retailer 14
-
$1,529 NZD
View
Price last confirmed 94 days ago
Retailer 15
-
$1,565 NZD
View
Price last confirmed 36 days ago
B
Retailer 16
-
$1,570 NZD
View
B
Retailer 17
-
$1,577 NZD
View
B
Retailer 18
-
$1,657 NZD
View
B
Retailer 19
-
$1,676 NZD
View
Retailer 20
-
$1,863 NZD
View
Price last confirmed 20 days ago
B
Retailer 21
-
$1,944 NZD
View
B
Retailer 22
-
$2,237 NZD
View
Most Expensive
Queensmith
LG811636178 · Oct 27
$3,965 NZD
£1,760 GBP
View
Price last confirmed 8 days ago
22 more retailers have this diamond
Prices start from $440 NZDSave up to $1,797 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
$440 NZD