CaratHunter
Plans
Cushion|Lab Grown|IGI

1.00ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG818640099

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG818640099

Diamond specifications and retailer prices

From $814 SGD
$637 USD
As of October 30, 2026
Save $2,522 SGD (76%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $3,337 SGD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1ct lab-grown cushion diamond

This 1ct lab-grown cushion sits in the classic one-carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818640099 or 818640099. Listed at 16 retailers as of October 30, 2026, with prices from $814 to $3,337, a $2,522 spread on the same certified stone. Brilliant Earth lists it at $3,337. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.00
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818640099
Dimensions6.98 × 5.35 × 3.55 mm
L/W Ratio1.30
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
6.98 mm5.35 mm1.00 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818640099
Side View
Table 62.0%Crown 33.8°Girdle: THN-STKPavilion 41.4°Culet: NoneDepth 66.4%

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 30
Current: $3,337 SGD|Low: $490 SGD|High: $3,439 SGD|Avg: $1,630 SGD|-3.0%
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
Retailer 14
Retailer 15
Retailer 16
October 31, 2026
Retailer 16$689 SGD
Retailer 15$814 SGD
Retailer 14$835 SGD
Retailer 13$940 SGD
Retailer 7$1,023 SGD
Retailer 5$1,037 SGD
Retailer 2$1,145 SGD
Retailer 10$1,267 SGD
Retailer 12$1,312 SGD
Retailer 8$1,656 SGD
Retailer 9$1,670 SGD
Retailer 6$2,013 SGD
Retailer 4$2,490 SGD
Retailer 3$2,674 SGD
Retailer 11$3,203 SGD
Brilliant Earth$3,337 SGD

38 data points across 16 retailers

16 retailers$814 SGD to $3,337 SGD

Retailer 1
-
$689 SGD
$539 USD
Price last confirmed 13 days ago
Final sale: no returns
A
Retailer 2
-
$814 SGD
$637 USD
View
A
Retailer 3
-
$835 SGD
HK$5,100 HKD
View
A
Retailer 4
-
$940 SGD
$735 USD
View
A
Retailer 5
-
$1,023 SGD
$800 USD
View
A
Retailer 6
-
$1,037 SGD
$811 USD
View
B+
Retailer 7
-
$1,145 SGD
€853 EUR
View
B+
Retailer 8
-
$1,267 SGD
£781 GBP
View
B+
Retailer 9
-
$1,312 SGD
ZAR 16,574 ZAR
View
Retailer 10
-
$1,656 SGD
$1,296 USD
View
Price last confirmed 52 days ago
B+
Retailer 11
-
$1,670 SGD
$1,306 USD
View
B
Retailer 12
-
$2,013 SGD
View
B
Retailer 13
-
$2,490 SGD
$1,947 USD
View
B
Retailer 14
-
$2,674 SGD
$2,092 USD
View
B
Retailer 15
-
$3,203 SGD
£1,973 GBP
View
Most Expensive
B
Brilliant Earth
21086551A · Oct 31
$3,337 SGD
$2,610 USD
View
15 more retailers have this diamond
Prices start from $814 SGDSave up to $2,522 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
1.00ct Cushion
$814 SGD