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1.78ct H VVS1 Round Lab Grown Diamond

ID • H/VVS1 • IGI LG728521251

Shape and cutting style on the report: Round brilliant

Certificate IGI LG728521251

Diamond specifications and retailer prices

From $1,311 NZD
$739 USD
As of October 30, 2026
Save $2,053 NZD (61%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $3,364 NZD at MOH London · As of October 25, 2026
View at MOH London

About this 1.78ct lab-grown round diamond

This 1.78ct lab-grown round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG728521251 or 728521251. Listed at 6 retailers as of October 25, 2026, with prices from $1,311 to $3,364, a $2,053 spread on the same certified stone. MOH London lists it at $3,364. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.78
Carat
H
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG728521251
Dimensions7.77 × 7.77 × 4.83 mm
L/W Ratio1.00
Culet sizePointed
Top View
7.77 mm7.77 mm1.78 ctH / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG728521251
Side View
Table 55.0%Crown 34.2°Girdle: MediumPavilion 40.8°Culet: NoneDepth 62.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $3,364 NZD|Low: $954 NZD|High: $3,400 NZD|Avg: $1,720 NZD|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 25, 2026
Retailer 7$954 NZD
Retailer 5$1,127 NZD
Retailer 3$1,311 NZD
Retailer 2$1,368 NZD
Retailer 4$1,416 NZD
Retailer 6$2,829 NZD
MOH London$3,364 NZD

10 data points across 7 retailers

6 retailers$1,311 NZD to $3,364 NZD

Retailer 1
-
$954 NZD
HK$4,200 HKD
Price last confirmed 57 days ago
B+
Retailer 2
-
$1,311 NZD
$739 USD
View
B+
Retailer 3
-
$1,368 NZD
$771 USD
View
B+
Retailer 4
-
$1,416 NZD
$798 USD
View
B
Retailer 5
-
$2,829 NZD
$1,595 USD
View
Most Expensive
B
MOH London
LG728521251 · Oct 25
$3,364 NZD
£1,493 GBP
View
5 more retailers have this diamond
Prices start from $1,311 NZDSave up to $2,053 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.

B+
1.78ct Round
$1,311 NZD