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Round|Lab Grown|IGI

1.28ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG836617751

Shape and cutting style on the report: Round brilliant

Certificate IGI LG836617751

Diamond specifications and retailer prices

From $389 SGD
$304 USD
As of October 30, 2026
Save $2,015 SGD (84%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,403 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 D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG836617751 or 836617751. Listed at 16 retailers as of October 29, 2026, with prices from $389 to $2,403, a $2,015 spread on the same certified stone. Brilliant Earth lists it at $2,403. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836617751
Dimensions6.90 × 6.95 × 4.31 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
6.90 mm6.95 mm1.28 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836617751
Side View
Table 58.0%Crown 35.8°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 62.2%

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 30
Current: $2,403 SGD|Low: $389 SGD|High: $2,838 SGD|Avg: $1,125 SGD|-15.3%
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
Retailer 16
October 30, 2026
Retailer 7$389 SGD
Retailer 4$431 SGD
Retailer 3$671 SGD
Retailer 2$685 SGD
Retailer 5$712 SGD
Retailer 10$714 SGD
Retailer 12$739 SGD
Retailer 9$754 SGD
Retailer 6$1,010 SGD
Retailer 16$1,322 SGD
Retailer 14$1,397 SGD
Retailer 8$1,448 SGD
Retailer 13$1,534 SGD
Retailer 11$1,734 SGD
Retailer 15$2,039 SGD
Brilliant Earth$2,403 SGD

27 data points across 16 retailers

16 retailers$389 SGD to $2,403 SGD

A
Cheapest Retailer
-
$389 SGD
$304 USD
Final sale: no returns
A
Retailer 2
-
$431 SGD
$337 USD
View
A
Retailer 3
-
$671 SGD
$525 USD
View
A
Retailer 4
-
$685 SGD
£422 GBP
View
A
Retailer 5
-
$712 SGD
$557 USD
View
A
Retailer 6
-
$714 SGD
€532 EUR
View
A
Retailer 7
-
$739 SGD
ZAR 9,344 ZAR
View
A
Retailer 8
-
$754 SGD
£465 GBP
View
A
Retailer 9
-
$1,010 SGD
$790 USD
View
B+
Retailer 10
-
$1,322 SGD
$1,034 USD
View
B+
Retailer 11
-
$1,397 SGD
View
B+
Retailer 12
-
$1,448 SGD
$1,133 USD
View
B+
Retailer 13
-
$1,534 SGD
$1,200 USD
View
B+
Retailer 14
-
$1,734 SGD
£1,068 GBP
View
Retailer 15
-
$2,039 SGD
$1,595 USD
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
21640958A · Oct 29
$2,403 SGD
$1,880 USD
View
15 more retailers have this diamond
Prices start from $389 SGDSave up to $2,015 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
$389 SGD