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Round|Lab Grown|IGI

4.18ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG683520148

Shape and cutting style on the report: Round brilliant

Certificate IGI LG683520148

Diamond specifications and retailer prices

From $2,370 SGD
£1,456 GBP
As of October 29, 2026
Save $17,894 SGD (88%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: $20,264 SGD at Brilliant Earth · As of October 24, 2026
View at Brilliant Earth

About this 4.18ct lab-grown round diamond

This 4.18ct lab-grown round sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG683520148 or 683520148. Listed at 28 retailers as of October 24, 2026, with prices from $2,370 to $20,264, a $17,894 spread on the same certified stone. Brilliant Earth lists it at $20,264. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

4.18
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG683520148
Dimensions10.53 × 10.48 × 6.25 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS 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
10.53 mm10.48 mm4.18 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG683520148
Side View
Table 58.0%Crown 33.6°Girdle: MediumPavilion 40.4°Culet: NoneDepth 59.5%

Caratlytics Score

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A+
Exceptional
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: $20,264 SGD|Low: $2,355 SGD|High: $20,264 SGD|Avg: $6,027 SGD
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
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
October 29, 2026
Retailer 17$2,370 SGD
Retailer 14$2,626 SGD
Retailer 6$2,665 SGD
Retailer 8$2,760 SGD
Retailer 15$2,857 SGD
Retailer 21$3,048 SGD
Retailer 19$3,050 SGD
Retailer 5$3,609 SGD
Retailer 13$4,175 SGD
Retailer 20$4,326 SGD
Retailer 4$4,586 SGD
Retailer 3$4,642 SGD
Retailer 16$5,965 SGD
Retailer 2$6,485 SGD
Retailer 12$6,537 SGD
Retailer 10$7,436 SGD
Retailer 18$7,754 SGD
Retailer 9$7,825 SGD
Retailer 7$8,712 SGD
Retailer 11$10,443 SGD
Retailer 22$16,367 SGD
Brilliant Earth$20,264 SGD

28 data points across 22 retailers

28 retailers$2,370 SGD to $20,264 SGD

A+
Cheapest Retailer
-
$2,370 SGD
£1,456 GBP
A
Retailer 2
-
$2,626 SGD
$2,049 USD
View
A
Retailer 3
-
$2,665 SGD
$2,079 USD
View
Final sale: no returns
A
Retailer 4
-
$2,760 SGD
$2,153 USD
View
A
Retailer 5
-
$2,857 SGD
$2,229 USD
View
Price last confirmed 9 days ago
A
Retailer 6
-
$3,047 SGD
$2,377 USD
View
Price last confirmed 18 days ago
A
Retailer 7
-
$3,048 SGD
$2,378 USD
View
A
Retailer 8
-
$3,050 SGD
$2,380 USD
View
A
Retailer 9
-
$3,609 SGD
HK$22,000 HKD
View
A
Retailer 10
-
$4,175 SGD
£2,565 GBP
View
A
Retailer 11
-
$4,187 SGD
$3,267 USD
View
Price last confirmed 8 days ago
A
Retailer 12
-
$4,326 SGD
$3,375 USD
View
A
Retailer 13
-
$4,586 SGD
$3,578 USD
View
A
Retailer 14
-
$4,642 SGD
$3,622 USD
View
A
Retailer 15
-
$5,965 SGD
€4,432 EUR
View
A
Retailer 16
-
$6,485 SGD
ZAR 81,735 ZAR
View
A
Retailer 17
-
$6,537 SGD
A$7,847 AUD
View
Price last confirmed 7 days ago
A
Retailer 18
-
$7,436 SGD
$5,802 USD
View
B+
Retailer 19
-
$7,754 SGD
$6,050 USD
View
A
Retailer 20
-
$7,825 SGD
$6,105 USD
View
B+
Retailer 21
-
$8,571 SGD
$6,687 USD
View
B+
Retailer 22
-
$8,712 SGD
£5,352 GBP
View
B+
Retailer 23
-
$10,443 SGD
View
B+
Retailer 24
-
$10,657 SGD
$8,315 USD
View
B+
Retailer 25
-
$12,078 SGD
£7,420 GBP
View
Price last confirmed 20 days ago
B
Retailer 26
-
$16,367 SGD
$12,770 USD
View
B
Retailer 27
-
$20,148 SGD
$15,720 USD
View
Most Expensive
B
Brilliant Earth
13152316A · Oct 24
$20,264 SGD
$15,810 USD
View
27 more retailers have this diamond
Prices start from $2,370 SGDSave up to $17,894 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+
4.18ct Round
$2,370 SGD