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Round|Lab Grown|IGI

5.09ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG687506485

Shape and cutting style on the report: Round brilliant

Certificate IGI LG687506485

Diamond specifications and retailer prices

From $923 SGD
$722 USD
As of October 29, 2026
Save $3,478 SGD (79%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $8,322 SGD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 5.09ct lab-grown round diamond

This 5.09ct lab-grown round sits in the over five carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG687506485 or 687506485. Listed at 17 retailers as of October 25, 2026, with a 377% 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

5.09
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG687506485
Dimensions11.16 × 11.11 × 6.67 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.16 mm11.11 mm5.09 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG687506485
Side View
Table 59.0%Crown 33.4°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 60.0%

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: $8,322 SGD|Low: $923 SGD|High: $10,815 SGD|Avg: $2,832 SGD|-23.0%
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
October 30, 2026
Retailer 9$923 SGD
Retailer 6$926 SGD
Retailer 11$1,070 SGD
Retailer 10$1,298 SGD
Retailer 2$1,528 SGD
Retailer 7$1,711 SGD
Retailer 12$1,752 SGD
Retailer 13$2,350 SGD
Retailer 4$2,385 SGD
Retailer 8$3,440 SGD
Retailer 3$4,401 SGD
Retailer 5$6,085 SGD
Brilliant Earth$8,322 SGD

35 data points across 13 retailers

17 retailers$923 SGD to $4,401 SGD

A
Cheapest Retailer
-
$923 SGD
$722 USD
A
Retailer 2
-
$926 SGD
£570 GBP
View
A
Retailer 3
-
$1,050 SGD
$821 USD
View
A
Retailer 4
-
$1,070 SGD
$837 USD
View
Retailer 5
-
$1,120 SGD
$876 USD
View
Price last confirmed 18 days ago
A
Retailer 6
-
$1,298 SGD
$1,015 USD
View
B+
Retailer 7
-
$1,528 SGD
$1,195 USD
View
B+
Retailer 8
-
$1,702 SGD
$1,331 USD
View
B+
Retailer 9
-
$1,711 SGD
£1,054 GBP
View
B+
Retailer 10
-
$1,752 SGD
€1,305 EUR
View
B+
Retailer 11
-
$2,350 SGD
A$2,828 AUD
View
B+
Retailer 12
-
$2,385 SGD
$1,866 USD
View
B
Retailer 13
-
$3,147 SGD
$2,462 USD
View
B
Retailer 14
-
$3,440 SGD
$2,691 USD
View
B
Retailer 15
-
$4,401 SGD
£2,711 GBP
View
Retailer 16
-
$6,085 SGD
$4,760 USD
View
Price last confirmed 12 days ago
Most Expensive
Brilliant Earth
13761774A · Oct 30
$8,322 SGD
$6,510 USD
View
Price under review
16 more retailers have this diamond
Prices start from $923 SGDSave up to $3,478 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
5.09ct Round
$923 SGD