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Radiant|Lab Grown|IGI

1.68ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG603358509

Certificate IGI LG603358509

Diamond specifications and retailer prices

From $810 SGD
$632 USD
As of October 28, 2026
Save $4,137 SGD (84%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $4,947 SGD at Brilliant Earth · As of October 8, 2026
View at Brilliant Earth

About this 1.68ct lab-grown radiant diamond

This 1.68ct lab-grown radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG603358509 or 603358509. Listed at 5 retailers as of October 28, 2026, with a 511% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.68
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG603358509
Dimensions8.59 × 5.85 × 3.84 mm
L/W Ratio1.47
Top View
8.59 mm5.85 mm1.68 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG603358509
Side View
Table 60.0%CrownGirdle: MediumPavilionCulet: NoneDepth 65.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: $4,947 SGD|Low: $574 SGD|High: $5,101 SGD|Avg: $2,208 SGD|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 23, 2026
Retailer 7$574 SGD
Retailer 4$810 SGD
Retailer 2$1,052 SGD
Retailer 3$1,466 SGD
Retailer 6$1,975 SGD
Retailer 9$2,252 SGD
Retailer 5$2,292 SGD
Retailer 8$2,493 SGD
Retailer 10$4,331 SGD
Brilliant Earth$4,947 SGD

12 data points across 10 retailers

5 retailers$810 SGD to $4,947 SGD

A
Cheapest Retailer
-
$810 SGD
$632 USD
A
Retailer 2
-
$1,052 SGD
€782 EUR
View
B+
Retailer 3
-
$1,466 SGD
$1,144 USD
View
B
Retailer 4
-
$4,947 SGD
$3,860 USD
View
Most Expensive
Brilliant Earth
21385459A · Oct 8
$4,947 SGD
$3,860 USD
View
Price last confirmed 21 days ago
4 more retailers have this diamond
Prices start from $810 SGDSave up to $4,137 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
1.68ct Radiant
$810 SGD