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Heart|Lab Grown|IGI

1.23ct E FL Heart Lab Grown Diamond

ID • E/FL • IGI LG836617848

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG836617848

Diamond specifications and retailer prices

From $578 NZD
$325 USD
As of October 30, 2026
Save $3,190 NZD (85%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $3,768 NZD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.23ct lab-grown heart diamond

This 1.23ct lab-grown heart sits in the classic one-carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG836617848 or 836617848. Listed at 19 retailers as of October 30, 2026, with prices from $578 to $3,768, a $3,190 spread on the same certified stone. Brilliant Earth lists it at $3,768. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.1°
Pavilion angle37.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836617848
Dimensions6.72 × 7.51 × 4.12 mm
L/W Ratio1.12
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
6.72 mm7.51 mm1.23 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836617848
Side View
Table 60.0%Crown 32.1°Girdle: STK-THKPavilion 37.6°Culet: NoneDepth 54.9%

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: $3,768 NZD|Low: $578 NZD|High: $4,603 NZD|Avg: $1,660 NZD|-18.1%
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 1, 2026
Retailer 10$578 NZD
Retailer 4$670 NZD
Retailer 8$706 NZD
Retailer 17$716 NZD
Retailer 19$716 NZD
Retailer 15$762 NZD
Retailer 3$986 NZD
Retailer 7$1,153 NZD
Retailer 9$1,161 NZD
Retailer 14$1,231 NZD
Retailer 12$1,281 NZD
Retailer 18$1,486 NZD
Retailer 13$1,770 NZD
Retailer 16$2,303 NZD
Retailer 5$2,382 NZD
Retailer 11$2,676 NZD
Retailer 2$2,871 NZD
Retailer 6$3,066 NZD
Brilliant Earth$3,768 NZD

20 data points across 19 retailers

19 retailers$578 NZD to $3,768 NZD

A
Cheapest Retailer
-
$578 NZD
$325 USD
A
Retailer 2
-
$670 NZD
$377 USD
View
A
Retailer 3
-
$706 NZD
$397 USD
View
Final sale: no returns
Retailer 4
-
$716 NZD
$403 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$716 NZD
$403 USD
View
Retailer 6
-
$762 NZD
£337 GBP
View
Price last confirmed 16 days ago
A
Retailer 7
-
$986 NZD
$555 USD
View
A
Retailer 8
-
$1,153 NZD
$649 USD
View
A
Retailer 9
-
$1,161 NZD
$653 USD
View
B+
Retailer 10
-
$1,231 NZD
ZAR 11,191 ZAR
View
B+
Retailer 11
-
$1,281 NZD
£567 GBP
View
B+
Retailer 12
-
$1,486 NZD
$836 USD
View
B+
Retailer 13
-
$1,770 NZD
$996 USD
View
B
Retailer 14
-
$2,303 NZD
$1,296 USD
View
B
Retailer 15
-
$2,382 NZD
$1,341 USD
View
B
Retailer 16
-
$2,676 NZD
SGD 2,035 SGD
View
B
Retailer 17
-
$2,871 NZD
£1,272 GBP
View
B
Retailer 18
-
$3,066 NZD
$1,725 USD
View
Most Expensive
B
Brilliant Earth
21813717A · Oct 31
$3,768 NZD
$2,120 USD
View
18 more retailers have this diamond
Prices start from $578 NZDSave up to $3,190 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
1.23ct Heart
$578 NZD