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Round|Lab Grown|IGI

1.09ct D SI2 Round Lab Grown Diamond

EX • D/SI2 • IGI LG472170728

Shape and cutting style on the report: Round brilliant

Certificate IGI LG472170728

Diamond specifications and retailer prices

From $817 SGD
As of November 5, 2026
Save $985 SGD (55%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,649 SGD at Friendly Diamonds · As of November 4, 2026
View at Friendly Diamonds

About this 1.09ct lab-grown round diamond

This 1.09ct lab-grown round sits in the classic one-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG472170728 or 472170728. Listed at 11 retailers as of November 4, 2026, with a 120% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.09
Carat
D
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG472170728
Dimensions6.51 × 6.49 × 4.13 mm
L/W Ratio1.00
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
6.51 mm6.49 mm1.09 ctD / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG472170728
Side View
Table 57.5%Crown 36.1°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 63.5%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $2,649 SGD|Low: $817 SGD|High: $4,426 SGD|Avg: $1,761 SGD
Friendly Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 6$817 SGD
Retailer 5$961 SGD
Retailer 9$1,045 SGD
Retailer 11$1,074 SGD
Retailer 3$1,114 SGD
Retailer 7$1,114 SGD
Retailer 2$1,755 SGD
Retailer 8$1,802 SGD
Friendly Diamonds$2,649 SGD
Retailer 10$3,132 SGD
Retailer 4$4,362 SGD

43 data points across 11 retailers

11 retailers$817 SGD to $1,802 SGD

B
Cheapest Retailer
-
$817 SGD
B
Retailer 2
-
$961 SGD
View
B
Retailer 3
-
$1,045 SGD
View
B
Retailer 4
-
$1,074 SGD
View
Final sale: no returns
Retailer 5
-
$1,114 SGD
View
Price last confirmed 25 days ago
B
Retailer 6
-
$1,114 SGD
View
B
Retailer 7
-
$1,755 SGD
View
B
Retailer 8
-
$1,802 SGD
View
Most Expensive
Friendly Diamonds
1589421 · Nov 4
$2,649 SGD
$2,074 USD
View
Price under review
8 more retailers have this diamond
Prices start from $817 SGDSave up to $985 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.

B
1.09ct Round
$817 SGD