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Round|Lab Grown|IGI

1.20ct D VS1 Round Lab Grown Diamond

ID • D/VS1 • IGI LG818644850

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818644850

Diamond specifications and retailer prices

From $369 NZD
$208 USD
As of October 30, 2026
Save $1,667 NZD (82%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $3,786 NZD at Queensmith · As of October 27, 2026
View at Queensmith

About this 1.2ct lab-grown round diamond

This 1.2ct lab-grown round sits in the classic one-carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG818644850 or 818644850. Listed at 23 retailers as of October 30, 2026, with a 452% 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

1.20
Carat
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818644850
Dimensions6.79 × 6.82 × 4.22 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
6.79 mm6.82 mm1.20 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818644850
Side View
Table 55.0%Crown 34.2°Girdle: MED-STKPavilion 40.7°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: $738 NZD|Low: $316 NZD|High: $1,933 NZD|Avg: $844 NZD|+4.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 11$330 NZD
Retailer 12$408 NZD
Retailer 3$454 NZD
Retailer 2$550 NZD
Retailer 6$691 NZD
Retailer 5$695 NZD
Retailer 7$701 NZD
Retailer 1$738 NZD
Retailer 8$996 NZD
Retailer 10$1,042 NZD
Retailer 4$1,313 NZD
Retailer 9$1,913 NZD

37 data points across 12 retailers

23 retailers$369 NZD to $2,037 NZD

Retailer 1
-
$330 NZD
$186 USD
Price last confirmed 12 days ago
A
Retailer 2
-
$369 NZD
$208 USD
View
Final sale: no returns
A
Retailer 3
-
$381 NZD
$215 USD
View
Retailer 4
-
$408 NZD
$230 USD
View
Price last confirmed 12 days ago
A
Retailer 5
-
$408 NZD
$230 USD
View
A
Retailer 6
-
$454 NZD
HK$2,000 HKD
View
B+
Retailer 7
-
$550 NZD
$310 USD
View
A
Retailer 8
-
$687 NZD
$387 USD
View
A
Retailer 9
-
$691 NZD
€371 EUR
View
A
Retailer 10
-
$695 NZD
£309 GBP
View
A
Retailer 11
-
$701 NZD
ZAR 6,385 ZAR
View
B+
Retailer 12
-
$738 NZD
£327 GBP
View
B+
Retailer 13
-
$845 NZD
$476 USD
View
B+
Retailer 14
-
$996 NZD
A$864 AUD
View
B+
Retailer 15
-
$1,042 NZD
$587 USD
View
Retailer 16
-
$1,313 NZD
$740 USD
View
Price last confirmed 13 days ago
B
Retailer 17
-
$1,330 NZD
SGD 1,013 SGD
View
B
Retailer 18
-
$1,366 NZD
$770 USD
View
B
Retailer 19
-
$1,409 NZD
$794 USD
View
Retailer 20
-
$1,544 NZD
$870 USD
View
Price last confirmed 40 days ago
B
Retailer 21
-
$1,913 NZD
£849 GBP
View
B
Retailer 22
-
$2,037 NZD
$1,148 USD
View
Most Expensive
Queensmith
LG818644850 · Oct 27
$3,786 NZD
£1,680 GBP
View
Price under review
22 more retailers have this diamond
Prices start from $369 NZDSave up to $1,667 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
1.20ct Round
$369 NZD