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Round|Lab Grown|IGI

1.28ct E IF Round Lab Grown Diamond

EX • E/IF • IGI LG817672940

Shape and cutting style on the report: Round brilliant

Certificate IGI LG817672940

Diamond specifications and retailer prices

From $371 NZD
As of November 3, 2026
Save $3,195 NZD (90%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $3,566 NZD at Do Amore Diamonds · As of November 4, 2026
View at Do Amore Diamonds

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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG817672940 or 817672940. Listed at 16 retailers as of November 3, 2026, with prices from $371 to $3,566, a $3,195 spread on the same certified stone. Do Amore Diamonds lists it at $3,566. 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
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817672940
Dimensions6.86 × 6.95 × 4.35 mm
L/W Ratio1.01
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
6.86 mm6.95 mm1.28 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817672940
Side View
Table 57.0%Crown 34.9°Girdle: MediumPavilion 41.3°Culet: NoneDepth 62.8%

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: Nov 3
Current: $3,566 NZD|Low: $371 NZD|High: $3,566 NZD|Avg: $1,324 NZD
Do Amore Diamonds
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
November 5, 2026
Retailer 4$371 NZD
Retailer 3$415 NZD
Retailer 2$424 NZD
Retailer 7$571 NZD
Retailer 8$640 NZD
Retailer 11$818 NZD
Retailer 13$841 NZD
Retailer 6$896 NZD
Retailer 16$1,238 NZD
Retailer 12$1,350 NZD
Retailer 9$1,377 NZD
Retailer 15$1,632 NZD
Retailer 10$1,996 NZD
Retailer 14$2,093 NZD
Retailer 5$2,874 NZD
Do Amore Diamonds$3,566 NZD

12 data points across 16 retailers

16 retailers$371 NZD to $3,566 NZD

A
Cheapest Retailer
-
$371 NZD
A
Retailer 2
-
$415 NZD
View
Final sale: no returns
A
Retailer 3
-
$424 NZD
View
A
Retailer 4
-
$571 NZD
View
B+
Retailer 5
-
$640 NZD
View
A
Retailer 6
-
$818 NZD
View
A
Retailer 7
-
$841 NZD
View
A
Retailer 8
-
$896 NZD
View
Retailer 9
-
$1,238 NZD
View
Price last confirmed 9 days ago
A
Retailer 10
-
$1,350 NZD
View
A
Retailer 11
-
$1,377 NZD
View
B+
Retailer 12
-
$1,632 NZD
View
B+
Retailer 13
-
$1,996 NZD
View
B+
Retailer 14
-
$2,093 NZD
View
B
Retailer 15
-
$2,874 NZD
View
Most Expensive
B
Do Amore Diamonds
27-873C8725E · Nov 4
$3,566 NZD
$2,010 USD
View
15 more retailers have this diamond
Prices start from $371 NZDSave up to $3,195 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
$371 NZD