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Heart|Lab Grown|IGI

1.00ct D IF Heart Lab Grown Diamond

VG • D/IF • IGI LG818661937

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG818661937

Diamond specifications and retailer prices

From $465 NZD
$262 USD
As of November 1, 2026
Save $2,037 NZD (81%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $2,502 NZD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1ct lab-grown heart diamond

This 1ct lab-grown heart sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG818661937 or 818661937. Listed at 19 retailers as of October 31, 2026, with prices from $465 to $2,502, a $2,037 spread on the same certified stone. Brilliant Earth lists it at $2,502. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
D
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle38.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818661937
Dimensions6.30 × 6.85 × 3.98 mm
L/W Ratio1.09
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
6.30 mm6.85 mm1.00 ctD / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818661937
Side View
Table 54.0%Crown 33.7°Girdle: STK-THKPavilion 38.1°Culet: NoneDepth 58.1%

Caratlytics Score

How it works →
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 1
Current: $2,502 NZD|Low: $465 NZD|High: $2,928 NZD|Avg: $1,309 NZD|-14.5%
Brilliant Earth
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 1, 2026
Retailer 5$465 NZD
Retailer 8$531 NZD
Retailer 12$727 NZD
Retailer 10$859 NZD
Retailer 2$890 NZD
Retailer 9$974 NZD
Retailer 14$979 NZD
Retailer 4$1,123 NZD
Retailer 3$1,258 NZD
Retailer 11$1,343 NZD
Retailer 6$1,751 NZD
Retailer 7$2,066 NZD
Retailer 13$2,313 NZD
Brilliant Earth$2,502 NZD

29 data points across 14 retailers

19 retailers$465 NZD to $2,502 NZD

Retailer 1
-
$421 NZD
$237 USD
Price last confirmed 24 days ago
A
Retailer 2
-
$465 NZD
$262 USD
View
Final sale: no returns
Retailer 3
-
$493 NZD
$278 USD
View
Price last confirmed 33 days ago
Retailer 4
-
$522 NZD
$294 USD
View
Price last confirmed 32 days ago
Retailer 5
-
$522 NZD
$294 USD
View
Price last confirmed 20 days ago
A
Retailer 6
-
$531 NZD
£236 GBP
View
A
Retailer 7
-
$727 NZD
$410 USD
View
A
Retailer 8
-
$859 NZD
€461 EUR
View
A
Retailer 9
-
$890 NZD
ZAR 8,107 ZAR
View
B+
Retailer 10
-
$974 NZD
£432 GBP
View
B+
Retailer 11
-
$979 NZD
$552 USD
View
B+
Retailer 12
-
$1,123 NZD
$633 USD
View
B+
Retailer 13
-
$1,258 NZD
A$1,091 AUD
View
B+
Retailer 14
-
$1,343 NZD
$757 USD
View
Retailer 15
-
$1,678 NZD
$946 USD
View
Price last confirmed 27 days ago
B
Retailer 16
-
$1,751 NZD
$987 USD
View
B
Retailer 17
-
$2,066 NZD
£917 GBP
View
B
Retailer 18
-
$2,313 NZD
$1,303 USD
View
Most Expensive
B
Brilliant Earth
21580600A · Oct 31
$2,502 NZD
$1,410 USD
View
18 more retailers have this diamond
Prices start from $465 NZDSave up to $2,037 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
1.00ct Heart
$465 NZD