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Oval|Lab Grown|IGI

1.28ct F IF Oval Lab Grown Diamond

EX • F/IF • IGI LG812620275

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG812620275

Diamond specifications and retailer prices

From $447 NZD
As of November 5, 2026
Save $2,844 NZD (86%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $3,291 NZD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.28ct lab-grown oval diamond

This 1.28ct lab-grown oval sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG812620275 or 812620275. Listed at 22 retailers as of November 4, 2026, with prices from $447 to $3,291, a $2,844 spread on the same certified stone. Brilliant Earth lists it at $3,291. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
F
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG812620275
Dimensions8.89 × 6.12 × 3.77 mm
L/W Ratio1.45
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
8.89 mm6.12 mm1.28 ctF / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG812620275
Side View
Table 62.0%Crown 35.6°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 61.6%

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 5
Current: $3,291 NZD|Low: $447 NZD|High: $3,380 NZD|Avg: $1,321 NZD|-2.6%
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
November 6, 2026
Retailer 9$447 NZD
Retailer 7$507 NZD
Retailer 4$715 NZD
Retailer 15$843 NZD
Retailer 14$873 NZD
Retailer 2$907 NZD
Retailer 5$1,073 NZD
Retailer 6$1,099 NZD
Retailer 13$1,238 NZD
Retailer 3$1,316 NZD
Retailer 8$1,573 NZD
Retailer 12$1,681 NZD
Retailer 10$1,973 NZD
Retailer 11$2,224 NZD
Brilliant Earth$3,291 NZD

37 data points across 15 retailers

22 retailers$447 NZD to $3,291 NZD

Retailer 1
-
$409 NZD
Price last confirmed 44 days ago
Retailer 2
-
$409 NZD
View
Price last confirmed 27 days ago
A
Retailer 3
-
$447 NZD
View
Final sale: no returns
Retailer 4
-
$473 NZD
View
Price last confirmed 42 days ago
Retailer 5
-
$500 NZD
View
Price last confirmed 42 days ago
Retailer 6
-
$507 NZD
View
Price last confirmed 25 days ago
Retailer 7
-
$507 NZD
View
Price last confirmed 35 days ago
A
Retailer 8
-
$715 NZD
View
A
Retailer 9
-
$843 NZD
View
A
Retailer 10
-
$873 NZD
View
A
Retailer 11
-
$907 NZD
View
A
Retailer 12
-
$1,073 NZD
View
A
Retailer 13
-
$1,099 NZD
View
A
Retailer 14
-
$1,238 NZD
View
A
Retailer 15
-
$1,316 NZD
View
B+
Retailer 16
-
$1,573 NZD
View
Retailer 17
-
$1,628 NZD
View
Price last confirmed 30 days ago
B+
Retailer 18
-
$1,681 NZD
View
B+
Retailer 19
-
$1,973 NZD
View
B+
Retailer 20
-
$2,224 NZD
View
B+
Retailer 21
-
$2,291 NZD
View
Most Expensive
B
Brilliant Earth
20677511A · Nov 4
$3,291 NZD
$1,850 USD
View
21 more retailers have this diamond
Prices start from $447 NZDSave up to $2,844 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 Oval
$447 NZD