CaratHunter
Plans
Heart|Lab Grown|IGI

1.00ct E SI1 Heart Lab Grown Diamond

ID • E/SI1 • IGI LG836642970

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG836642970

Diamond specifications and retailer prices

From $271 NZD
$152 USD
As of October 27, 2026
Save $1,582 NZD (85%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,853 NZD at Reve Diamonds · As of October 28, 2026
View at Reve Diamonds

About this 1ct lab-grown heart diamond

This 1ct lab-grown heart sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG836642970 or 836642970. Listed at 16 retailers as of October 27, 2026, with prices from $271 to $1,853, a $1,582 spread on the same certified stone. Reve Diamonds lists it at $1,853. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.00
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836642970
Dimensions6.93 × 5.97 × 4.16 mm
L/W Ratio1.16
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
6.93 mm5.97 mm1.00 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836642970
Side View
Table 54.0%Crown 32°Girdle: MED-THKPavilion 40.1°Culet: NoneDepth 60.0%

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 27
Current: $1,202 NZD|Low: $260 NZD|High: $1,853 NZD|Avg: $854 NZD|+2.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Reve Diamonds
October 29, 2026
Retailer 9$271 NZD
Retailer 12$333 NZD
Retailer 11$337 NZD
Retailer 4$515 NZD
Retailer 7$581 NZD
Retailer 3$616 NZD
Retailer 6$637 NZD
Retailer 8$880 NZD
Retailer 10$1,015 NZD
Retailer 2$1,079 NZD
Retailer 1$1,202 NZD
Retailer 5$1,578 NZD
Reve Diamonds$1,853 NZD

40 data points across 13 retailers

16 retailers$271 NZD to $1,853 NZD

A
Cheapest Retailer
-
$271 NZD
$152 USD
A
Retailer 2
-
$313 NZD
$176 USD
View
Price last confirmed 30 days ago
A
Retailer 3
-
$331 NZD
$186 USD
View
Price last confirmed 32 days ago
A
Retailer 4
-
$333 NZD
$187 USD
View
Final sale: no returns
A
Retailer 5
-
$337 NZD
$189 USD
View
A
Retailer 6
-
$337 NZD
$189 USD
View
A
Retailer 7
-
$515 NZD
$289 USD
View
B+
Retailer 8
-
$581 NZD
£257 GBP
View
B+
Retailer 9
-
$616 NZD
$346 USD
View
B+
Retailer 10
-
$637 NZD
£282 GBP
View
B+
Retailer 11
-
$880 NZD
$494 USD
View
B
Retailer 12
-
$1,015 NZD
$570 USD
View
B
Retailer 13
-
$1,079 NZD
$606 USD
View
B
Retailer 14
-
$1,202 NZD
$675 USD
View
B
Retailer 15
-
$1,578 NZD
£698 GBP
View
Most Expensive
B
Reve Diamonds
F0CE878DF · Oct 28
$1,853 NZD
$1,040 USD
View
15 more retailers have this diamond
Prices start from $271 NZDSave up to $1,582 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
$271 NZD