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Round|Lab Grown|IGI

1.28ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG779630639

Shape and cutting style on the report: Round brilliant

Certificate IGI LG779630639

Diamond specifications and retailer prices

From $341 SGD
$266 USD
As of October 29, 2026
Save $2,838 SGD (89%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $3,179 SGD 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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG779630639 or 779630639. Listed at 25 retailers as of October 29, 2026, with prices from $341 to $3,179, a $2,838 spread on the same certified stone. Brilliant Earth lists it at $3,179. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG779630639
Dimensions6.93 × 6.98 × 4.29 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
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 mm6.98 mm1.28 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG779630639
Side View
Table 59.0%Crown 34.9°Girdle: MediumPavilion 41.1°Culet: NoneDepth 61.8%

Caratlytics Score

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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: Oct 29
Current: $3,179 SGD|Low: $329 SGD|High: $3,179 SGD|Avg: $1,025 SGD
Brilliant Earth
Retailer 2
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Retailer 24
October 30, 2026
Retailer 22$341 SGD
Retailer 23$381 SGD
Retailer 15$399 SGD
Retailer 11$426 SGD
Retailer 16$426 SGD
Retailer 2$567 SGD
Retailer 9$628 SGD
Retailer 18$684 SGD
Retailer 8$732 SGD
Retailer 12$750 SGD
Retailer 5$762 SGD
Retailer 6$806 SGD
Retailer 19$807 SGD
Retailer 20$933 SGD
Retailer 7$1,036 SGD
Retailer 10$1,083 SGD
Retailer 3$1,265 SGD
Retailer 4$1,356 SGD
Retailer 14$1,369 SGD
Retailer 21$1,423 SGD
Retailer 17$1,615 SGD
Retailer 24$1,703 SGD
Retailer 13$1,799 SGD
Brilliant Earth$3,179 SGD

29 data points across 24 retailers

25 retailers$341 SGD to $3,179 SGD

A
Cheapest Retailer
-
$341 SGD
$266 USD
A
Retailer 2
-
$381 SGD
$297 USD
View
Final sale: no returns
A
Retailer 3
-
$399 SGD
$311 USD
View
A
Retailer 4
-
$426 SGD
$332 USD
View
A
Retailer 5
-
$426 SGD
$332 USD
View
A
Retailer 6
-
$476 SGD
HK$2,900 HKD
View
A
Retailer 7
-
$567 SGD
$442 USD
View
A
Retailer 8
-
$628 SGD
$490 USD
View
A
Retailer 9
-
$684 SGD
£420 GBP
View
A
Retailer 10
-
$732 SGD
ZAR 9,225 ZAR
View
A
Retailer 11
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$750 SGD
$585 USD
View
A
Retailer 12
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$762 SGD
€566 EUR
View
A
Retailer 13
-
$806 SGD
A$968 AUD
View
A
Retailer 14
-
$807 SGD
£496 GBP
View
A
Retailer 15
-
$933 SGD
$728 USD
View
A
Retailer 16
-
$1,036 SGD
A$1,244 AUD
View
B+
Retailer 17
-
$1,083 SGD
$845 USD
View
B+
Retailer 18
-
$1,265 SGD
A$1,518 AUD
View
B+
Retailer 19
-
$1,356 SGD
View
B+
Retailer 20
-
$1,369 SGD
$1,068 USD
View
B+
Retailer 21
-
$1,423 SGD
$1,111 USD
View
Retailer 22
-
$1,615 SGD
$1,260 USD
View
Price last confirmed 22 days ago
B+
Retailer 23
-
$1,703 SGD
£1,046 GBP
View
B
Retailer 24
-
$1,799 SGD
$1,404 USD
View
Most Expensive
B
Brilliant Earth
18530693A · Oct 29
$3,179 SGD
$2,480 USD
View
24 more retailers have this diamond
Prices start from $341 SGDSave up to $2,838 SGD

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
$341 SGD