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Round|Lab Grown|IGI

1.28ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG800680138

Shape and cutting style on the report: Round brilliant

Certificate IGI LG800680138

Diamond specifications and retailer prices

From $820 NZD
HK$3,600 HKD
As of October 30, 2026
Save $2,438 NZD (75%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $3,258 NZD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.28ct lab-grown round diamond

This 1.28ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG800680138 or 800680138. Listed at 12 retailers as of October 29, 2026, with prices from $820 to $3,258, a $2,438 spread on the same certified stone. Brilliant Earth lists it at $3,258. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800680138
Dimensions7.09 × 7.06 × 4.20 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
7.09 mm7.06 mm1.28 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800680138
Side View
Table 57.0%Crown 33°Girdle: MediumPavilion 40.2°Culet: NoneDepth 59.3%

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: $3,258 NZD|Low: $820 NZD|High: $3,347 NZD|Avg: $1,778 NZD|-2.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 7$820 NZD
Retailer 12$1,001 NZD
Retailer 8$1,150 NZD
Retailer 5$1,159 NZD
Retailer 2$1,257 NZD
Retailer 4$1,329 NZD
Retailer 10$1,330 NZD
Retailer 9$1,604 NZD
Retailer 11$2,355 NZD
Retailer 3$2,690 NZD
Retailer 6$2,851 NZD
Brilliant Earth$3,258 NZD

44 data points across 12 retailers

12 retailers$820 NZD to $3,258 NZD

A
Cheapest Retailer
-
$820 NZD
HK$3,600 HKD
A
Retailer 2
-
$1,001 NZD
$562 USD
View
A
Retailer 3
-
$1,150 NZD
$646 USD
View
A
Retailer 4
-
$1,159 NZD
€620 EUR
View
A
Retailer 5
-
$1,257 NZD
£556 GBP
View
A
Retailer 6
-
$1,329 NZD
A$1,148 AUD
View
A
Retailer 7
-
$1,330 NZD
$747 USD
View
B+
Retailer 8
-
$1,604 NZD
$901 USD
View
B+
Retailer 9
-
$2,355 NZD
$1,323 USD
View
B
Retailer 10
-
$2,690 NZD
$1,511 USD
View
B+
Retailer 11
-
$2,851 NZD
£1,261 GBP
View
Most Expensive
B
Brilliant Earth
21143557A · Oct 29
$3,258 NZD
$1,830 USD
View
11 more retailers have this diamond
Prices start from $820 NZDSave up to $2,438 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
1.28ct Round
$820 NZD