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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 HK$2,087 HKD
$266 USD
As of October 29, 2026
Save HK$17,370 HKD (89%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: HK$19,457 HKD 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 HK$2,087 to HK$19,457, a HK$17,370 spread on the same certified stone. Brilliant Earth lists it at HK$19,457. 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

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: Oct 29
Current: HK$19,457 HKD|Low: HK$2,016 HKD|High: HK$19,457 HKD|Avg: HK$6,332 HKD
Brilliant Earth
Retailer 2
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Retailer 24
October 30, 2026
Retailer 23HK$2,087 HKD
Retailer 24HK$2,330 HKD
Retailer 2HK$2,416 HKD
Retailer 12HK$2,605 HKD
Retailer 16HK$2,605 HKD
Retailer 13HK$3,468 HKD
Retailer 10HK$3,844 HKD
Retailer 19HK$4,186 HKD
Retailer 9HK$4,480 HKD
Retailer 14HK$4,590 HKD
Retailer 6HK$4,663 HKD
Retailer 7HK$4,937 HKD
Retailer 20HK$4,942 HKD
Retailer 21HK$5,712 HKD
Retailer 8HK$6,344 HKD
Retailer 11HK$6,630 HKD
Retailer 4HK$7,741 HKD
Retailer 5HK$8,302 HKD
Retailer 15HK$8,379 HKD
Retailer 22HK$8,713 HKD
Retailer 17HK$9,886 HKD
Retailer 3HK$10,422 HKD
Retailer 18HK$11,012 HKD
Brilliant EarthHK$19,457 HKD

28 data points across 24 retailers

25 retailersHK$2,087 HKD to HK$19,457 HKD

A
Cheapest Retailer
-
HK$2,087 HKD
$266 USD
A
Retailer 2
-
HK$2,330 HKD
$297 USD
View
Final sale: no returns
A
Retailer 3
-
HK$2,416 HKD
$308 USD
View
A
Retailer 4
-
HK$2,605 HKD
$332 USD
View
A
Retailer 5
-
HK$2,605 HKD
$332 USD
View
A
Retailer 6
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HK$2,912 HKD
View
A
Retailer 7
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HK$3,468 HKD
$442 USD
View
A
Retailer 8
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HK$3,844 HKD
$490 USD
View
A
Retailer 9
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HK$4,186 HKD
£420 GBP
View
A
Retailer 10
-
HK$4,480 HKD
ZAR 9,225 ZAR
View
A
Retailer 11
-
HK$4,590 HKD
$585 USD
View
A
Retailer 12
-
HK$4,663 HKD
€566 EUR
View
A
Retailer 13
-
HK$4,937 HKD
A$968 AUD
View
A
Retailer 14
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HK$4,942 HKD
£496 GBP
View
A
Retailer 15
-
HK$5,712 HKD
$728 USD
View
A
Retailer 16
-
HK$6,344 HKD
A$1,244 AUD
View
B+
Retailer 17
-
HK$6,630 HKD
$845 USD
View
B+
Retailer 18
-
HK$7,741 HKD
A$1,518 AUD
View
B+
Retailer 19
-
HK$8,302 HKD
SGD 1,430 SGD
View
B+
Retailer 20
-
HK$8,379 HKD
$1,068 USD
View
B+
Retailer 21
-
HK$8,713 HKD
$1,111 USD
View
Retailer 22
-
HK$9,886 HKD
$1,260 USD
View
Price last confirmed 22 days ago
B+
Retailer 23
-
HK$10,422 HKD
£1,046 GBP
View
B+
Retailer 24
-
HK$11,012 HKD
$1,404 USD
View
Most Expensive
B
Brilliant Earth
18530693A · Oct 29
HK$19,457 HKD
$2,480 USD
View
24 more retailers have this diamond
Prices start from HK$2,087 HKDSave up to HK$17,370 HKD

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
HK$2,087 HKD